MAGMA POWER CO /NV/
8-K, 1994-10-07
COGENERATION SERVICES & SMALL POWER PRODUCERS
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549

                            ----------------------

                                    FORM 8-K


                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934


Date of Report (Date of earliest event reported): October 3, 1994


                              MAGMA POWER COMPANY
          -----------------------------------------------------------
             (Exact name of registrant as specified in its charter)

 
 
   Nevada                       0-10533                     95-3694478
 --------------------------------------------------------------------------
(State or other               (Commission               (I.R.S. Employer
jurisdiction of               File Number)             Identification No.)
incorporation)


4365 Executive Drive, Suite 900, San Diego, CA                  92121
- - ----------------------------------------------                --------
(Address of principal executive offices)                     (Zip Code)


Registrants telephone number,
including area code:                                       (619) 622-7800
                                                           --------------



- - --------------------------------------------------------------------------
(Former name or former address, if changed since last report.)
<PAGE>
 
                                       2


Item 5.  Other Events.
- - --------------------- 

          On October 3, 1994, the Board of Directors of Magma Power Company (the
"Company") declared a distribution of one Right for each outstanding share of
Common Stock, par value $.10 per share (the "Company Common Stock"), to
stockholders of record at the close of business on October 14, 1994 and for each
share of Company Common Stock issued (including shares distributed from
Treasury) by the Company thereafter and prior to the Distribution Date.  Each
Right entitles the registered holder, subject to the terms of the Rights
Agreement, to purchase from the Company one one-thousandth of a share (a "Unit")
of Series A Preferred Stock, par value $.10 per share (the "Preferred Stock"),
at a Purchase Price of $125 per Unit, subject to adjustment.  The Purchase Price
is payable in cash or by certified or bank check or money order payable to the
order of the Company.  The description and terms of the Rights are set forth in
a Rights Agreement between the Company and Chemical Trust Company of California
as Rights Agent (the "Rights Agreement").

          Initially, the Rights will attach to all certificates representing
shares of outstanding Company Common Stock, and no separate Rights Certificates
will be distributed. The Rights will separate from the Company Common Stock and
the Distribution Date will occur upon the earlier of (i) 10 business days
following a public announcement (the date of such announcement being the "Stock
Acquisition Date") that a person or group of affiliated or associated persons
(other than the Company, any Subsidiary of the Company or any employee benefit
plan of the Company or such Subsidiary) (an "Acquiring Person") has acquired,
obtained the right to acquire or otherwise obtained beneficial ownership of 10%
or more of the then outstanding shares of Company Common Stock (or if certain
current holders of 10% or more of the outstanding shares of Company Common Stock
have acquired, obtained the right to acquire or otherwise obtained beneficial
ownership of an additional 4% of the Company Common Stock), and (ii) 10 business
days (or such later date as may be determined by action of the Board of
Directors prior to such time as any person becomes an Acquiring Person)
following the commencement of a tender offer or exchange offer that would result
in a person or group beneficially owning 20% or more of the then outstanding
shares of Company Common Stock. Until the Distribution Date, (i) the Rights will
be evidenced by Company Common Stock certificates and will be transferred with
and only with such Company Common Stock certificates, (ii) new Company Common
Stock certificates issued after October 14, 1994 (also including shares
distributed from Treasury) will contain a notation incorporating the Rights
Agreement by reference and (iii) the surrender for transfer of any certificates
representing outstanding Company Common Stock will also constitute the transfer
of the Rights associated with the Company Common Stock represented by such
certificates.
<PAGE>
 
                                       3

          The Rights are not exercisable until the Distribution Date and will
expire at the close of business on the tenth anniversary of the Rights Agreement
unless earlier redeemed by the Company as described below.

          As soon as practicable after the Distribution Date, Rights
Certificates will be mailed to holders of record of Company Common Stock as of
the close of business on the Distribution Date and, thereafter, the separate
Rights Certificates alone will represent the Rights.

          In the event that (i) the Company is the surviving corporation in a
merger with an Acquiring Person and shares of Company Common Stock shall remain
outstanding, (ii) a Person becomes the beneficial owner of 10% or more of the
then outstanding shares of Company Common Stock (or an additional 4% in the case
certain current 10% holders), (iii) an Acquiring Person engages in one or more
"self-dealing" transactions as set forth in the Rights Agreement, or (iv) during
such time as there is an Acquiring Person, an event occurs which results in such
Acquiring Person's ownership interest being increased by more than 1% by means
of a reverse stock split or recapitalization), then, in each such case, each
holder of a Right will thereafter have the right to receive, upon exercise,
Units of Preferred Stock (or, in certain circumstances, Company Common Stock,
cash, property or other securities of the Company) having a value equal to two
times the exercise price of the Right. The exercise price is the Purchase Price
multiplied by the number of Units of Preferred Stock issuable upon exercise of a
Right prior to the events described in this paragraph. Notwithstanding any of
the foregoing, following the occurrence of any of the events set forth in this
paragraph, all Rights that are, or (under certain circumstances specified in the
Rights Agreement) were, beneficially owned by any Acquiring Person will be null
and void.

          In the event that, at any time following the Stock Acquisition Date,
(i) the Company is acquired in a merger or other business combination
transaction and the Company is not the surviving corporation (other than a
merger described in the preceding paragraph), (ii) any Person consolidates or
merges with the Company and all or part of the Company Common Stock is converted
or exchanged for securities, cash or property of any other Person or (iii) 50%
or more of the Company's assets or earning power is sold or transferred, each
holder of a Right (except Rights which previously have been voided as described
above) shall thereafter have the right to receive, upon exercise, common stock
of the Acquiring Person having a value equal to two times the exercise price of
the Right.

          The Purchase Price payable, and the number of Units of Preferred Stock
issuable, upon exercise of the Rights are subject to adjustment from time to
time to prevent dilution (i) in the event of a stock dividend on, or a
subdivision, combination or reclassification of, the Preferred Stock, (ii) if
holders of the Preferred Stock are granted certain rights or warrants to
subscribe for Preferred Stock or convertible securities at less than the current
market price of the Preferred Stock, or (iii) upon the distribution to the
holders of the Preferred Stock of evidences of indebtedness or assets (excluding
regular
<PAGE>
 
                                       4

quarterly cash dividends) or of subscription rights or warrants (other than
those referred to above).

          With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price.  The Company is not required to issue fractional Units.  In lieu thereof,
an adjustment in cash may be made based on the market price of the Preferred
Stock prior to the date of exercise.

          At any time until ten business days following the Stock Acquisition
Date, a majority of the Independent Directors may redeem the Rights in whole,
but not in part, at a price of $.01 per Right (the "Redemption Price"), payable,
at the election of such majority of the Independent Directors, in cash or shares
of Company Common Stock.  Immediately upon the action of a majority of
Independent  Directors ordering the redemption of the Rights, the Rights will
terminate and the only right of the holders of Rights will be to receive the
Redemption Price.

          Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends.  While the distribution of the Rights will not
be taxable to stockholders or to the Company, stockholders may, depending upon
the circumstances, recognize taxable income in the event that the Rights become
exercisable for Units of Preferred Stock (or other consideration).

          Any of the provisions of the Rights Agreement may be amended at any
time prior to the Distribution Date. After the Distribution Date, the provisions
of the Rights Agreement may be amended in order to cure any ambiguity, defect or
inconsistency, to make changes which do not adversely affect the interests of
holders of Rights (excluding the interests of any Acquiring Person), or to
shorten or lengthen any time period under the Rights Agreement; provided,
however, that no amendment to adjust the time period governing redemption shall
be made at such time as the Rights are not redeemable.

          A total of 50,000 shares of Preferred Stock will be reserved for
issuance upon exercise of the Rights.  The Units of Preferred Stock that may be
acquired upon exercise of the Rights will be nonredeemable and subordinate to
any other shares of preferred stock that may be issued by the Company.

          Each Unit of Preferred Stock will have a minimum preferential
quarterly dividend rate of $.01 per Unit but will, in any event, be entitled to
a dividend equal to the per share dividend declared on the Company Common Stock.
<PAGE>
 
                                       5

          In the event of liquidation, the holder of a Unit of Preferred Stock
will receive a preferred liquidation payment equal to the greater of $125 per
Unit and the per share amount paid in respect of a share of Company Common
Stock.

          Each Unit of Preferred Stock will have one vote, voting together with
the Company Common Stock.

          In the event of any merger, consolidation or other transaction in
which shares of Company Common Stock are exchanged, each Unit of Preferred Stock
will be entitled to receive the per share amount paid in respect of each share
of Company Common Stock.

          The rights of holders of the Preferred Stock to dividends, liquidation
and voting, and in the event of mergers and consolidations, are protected by
customary antidilution provisions.

          Because of the nature of the Preferred Stock's dividend, liquidation
and voting rights, the economic value of one Unit of Preferred Stock that may be
acquired upon the exercise of each Right should approximate the economic value
of one share of Company Common Stock.

          The Rights may have certain anti-takeover effects. The Rights will
cause substantial dilution to a person or group that attempts to acquire the
Company on terms not approved by a majority of the Independent Directors unless
the offer is conditioned on a substantial number of Rights being acquired.
However, the Rights should not interfere with any merger or other business
combination approved by a majority of the Independent Directors because the
Rights may be redeemed by the Company at $.01 per Right at any time on or prior
to the tenth business day following the Stock Acquisition Date (subject to
extension by a majority of the Independent Directors).  Thus, the Rights are
intended to encourage persons who may seek to acquire control of the Company to
initiate such an acquisition through negotiations with the Board of Directors.
However, the effect of the Rights may be to discourage a third party from making
a partial tender offer or otherwise attempting to obtain a substantial equity
position in the equity securities of, or seeking to obtain control of, the
Company.  To the extent any potential acquirors are deterred by the Rights, the
Rights may have the effect of preserving incumbent management in office.

          The Rights Agreement between the Company and the Rights Agent
specifying the terms of the Rights, which includes as Exhibit A the Form of
Rights Certificate, is attached hereto as Exhibit 4 and is incorporated herein
by reference.  The foregoing description of the Rights does not purport to be
complete and is qualified in its entirety by reference to such Exhibit 4.
<PAGE>
 
                                       6


Item 7.  Financial Statements and Exhibits
- - ------------------------------------------

    Exhibit 4          Rights Agreement dated as of October 6, 1994, between
                       Magma Power Company and Chemical Trust Company of
                       California, including Form of Rights Certificate as
                       Exhibit A, Summary of Rights to Purchase Preferred Stock
                       as Exhibit B and the Certificate of Designation for the
                       Preferred Stock as Exhibit C.

 
    Exhibit 99         Press Release dated October 3, 1994.

 
<PAGE>
 
                                   SIGNATURE


          Pursuant to the requirements of the Securities Exchange Act of 1934,
the registration has duly caused this report to be signed on its behalf by the
undersigned, thereto duly authorized.

                                 MAGMA POWER COMPANY

                                           /s/ Jon R. Peele
                                    By ------------------------------------
                                       Name:   Jon R. Peele
                                       Title:  Executive Vice President    



Date: October 4, 1994
<PAGE>
 
                                 EXHIBIT INDEX
                                 -------------


Exhibit
   No.          Description
 -------        -----------

    4           Rights Agreement dated as of October 6, 1994, between Magma
                Power Company and Chemical Trust Company of California,
                including Form of Rights Certificate as Exhibit A, Summary
                ofRights to Purchase Preferred Stock as Exhibit B and
                Certificate of Designation for the Preferred Stock as Exhibit C.

    99          Press Release
                dated October 3, 1994.

<PAGE>
 
- - --------------------------------------------------------------------------------



                              MAGMA POWER COMPANY


                                      and


                      CHEMICAL TRUST COMPANY OF CALIFORNIA

                                  Rights Agent



- - --------------------------------------------------------------------------------


                                Rights Agreement

                          Dated as of October 6, 1994


- - --------------------------------------------------------------------------------
<PAGE>
 
<TABLE>
<CAPTION>
 
<S>                          <C>                                              <C>
SECTION 1.                   Certain Definitions............................   1
 
SECTION 2.                   Appointment of Rights Agent....................   4
 
SECTION 3.                   Issue of Rights Certificates...................   4
 
SECTION 4.                   Form of Rights Certificates....................   5
 
SECTION 5.                   Countersignature and Registration..............   6
 
SECTION 6.                   Transfer, Split Up, Combination and Exchange 
                             of Rights Certificates;                       
                             Mutilated, Destroyed, Lost or Stolen Rights    
                             Certificates...................................   7
 
SECTION 7.                   Exercise of Rights; Purchase Price; Expiration
                             Date of Rights.................................   7
 
SECTION 8.                   Cancellation and Destruction of Rights
                             Certificates...................................   9
 
SECTION 9.                   Reservation and Availability of Capital Stock..  10
 
SECTION 10.                  Preferred Stock Record Date....................  11
 
SECTION 11.                  Adjustment of Purchase Price, Number and Kind
                             of Shares or Number of Rights.................   11
 
SECTION 12.                  Certificate of Adjusted Purchase Price or
                             Number of Shares...............................  20
 
SECTION 13.                  Consolidation, Merger or Sale or Transfer of
                             Assets or Earning  Power.......................  20
 
SECTION 14.                  Fractional Rights and Fractional Shares........  23
 
SECTION 15.                  Rights of Action...............................  24
 
SECTION 16.                  Agreement of Rights Holders....................  24
 
SECTION 17.                  Rights Certificate Holder Not Deemed a
                             Shareholder....................................  25
 
SECTION 18.                  Concerning the Rights Agent....................  25
 
SECTION 19.                  Merger or Consolidation or Change of Name of
                             Rights Agent...................................  26
 
SECTION 20.                  Duties of Rights Agent.........................  26
 
SECTION 21.                  Change of Rights Agent.........................  29
 
SECTION 22.                  Issuance of New Rights Certificates............  29
 
 
</TABLE>

                                       i
<PAGE>
 
<TABLE>

<S>                          <C>                                              <C>
SECTION 23.                  Redemption and Termination.....................  30
 
SECTION 24.                  Notice of Certain Events.......................  30
 
SECTION 25.                  Notices........................................  31
 
SECTION 26.                  Supplements and Amendments.....................  32
 
SECTION 27.                  Successors.....................................  32
 
SECTION 28.                  Determinations and Actions by the Board of
                             Directors, etc.................................  33
 
SECTION 29.                  Benefits of this Agreement.....................  33
 
SECTION 30.                  Severability...................................  33
 
SECTION 31.                  Governing Law..................................  33
 
SECTION 32.                  Counterparts...................................  34
 
SECTION 33.                  Descriptive Headings...........................  34
 
SECTION 34.                  Exchange.......................................  34
</TABLE>

                                       ii
<PAGE>
 
                                RIGHTS AGREEMENT
                                ----------------


          RIGHTS AGREEMENT, dated as of October 6, 1994 (the "Agreement"),
                                                              ---------   
between Magma Power Company, a Nevada corporation (the "Company"), and Chemical
                                                        -------                
Trust Company of California, a California Corporation (the "Rights Agent").
                                                            ------------   

          WHEREAS, effective October 3, 1994 (the "Rights Dividend Declaration
                                                   ---------------------------
Date"), the Board of Directors of the Company authorized and declared a
- - ----                                                                   
distribution of one Right for each share of common stock, par value $.10 per
share, of the Company (the "Company Common Stock") outstanding at the Close of
                            --------------------                              
Business on October 14, 1994 (the "Record Date"), and has authorized the
                                   -----------                          
issuance of one Right (as such number may hereinafter be adjusted pursuant
hereto) for each share of Company Common Stock issued between the Record Date
(whether originally issued or delivered from the Company's treasury) and, except
as otherwise provided in Section 22, the Distribution Date, each Right initially
representing the right to purchase upon the terms and subject to the conditions
hereinafter set forth one Unit of Series A Preferred Stock (the "Rights");
                                                                 ------   

          NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth, the parties hereby agree as follows:

           SECTION 1.  Certain Definitions.  For purposes of this Agreement, the
                       -------------------                                      
following terms have the meanings indicated:

           (a)  "Acquiring Person" shall mean any Person (other than the
                 ----------------                                       
     Company, any Subsidiary of the Company, any employee benefit plan
     maintained by the Company or any of its Subsidiaries or any trustee or
     fiduciary with respect to such plan acting in such capacity) which shall be
     the Beneficial Owner of 10% or more of the shares of Company Common Stock
     then outstanding; provided, however, that neither The Dow Chemical Company 
                       --------  -------
     nor The B.C. McCabe Foundation shall be an Acquiring Person unless and
     until such stockholder becomes the Beneficial Owner of 4% or more of the
     outstanding shares of Company Common Stock in addition to the number of
     shares such stockholder beneficially owns at the time such stockholder
     becomes the Beneficial Owner of such additional shares and the aggregate
                                                            ---
     number of shares of Company Common Stock beneficially owned by such
     stockholder is 10% or more of the shares of Company Common Stock
     outstanding.

           (b)  "Affiliate" and "Associate" shall have the respective meanings
                 ---------       ---------                                    
     ascribed to such terms in Rule 12b-2 of the General Rules and Regulations
     under the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
                                                                 ------------   
     as in effect on the date hereof.

           (c)  A Person shall be deemed the "Beneficial Owner" of, and shall be
                                              ----------------                  
     deemed to "beneficially own", any securities:

               (i)  of which such Person or any of such Person's Affiliates or
           Associates is considered to be a "beneficial owner" under Rule 13d-3
           of the General Rules and Regulations under the Exchange Act (the
                                                                           
           "Exchange Act Regulations") as in effect on the date hereof;
           -------------------------                                   
           provided, however, that a Person shall not be deemed the "Beneficial
           --------  -------                                                   
           Owner" of, or to "beneficially own", any securities
<PAGE>
 
                                       2



           under this subparagraph (i) as a result of an agreement, arrangement
           or understanding to vote such securities if such agreement,
           arrangement or understanding (A) arises solely from a revocable proxy
           given in response to a proxy or consent solicitation made pursuant
           to, and in accordance with, the applicable provisions of the Exchange
           Act and the Exchange Act Regulations, and (B) is not reportable by
           such Person on Schedule 13D under the Exchange Act (or any comparable
           or successor report);

             (ii)  which are beneficially owned, directly or indirectly, by any
           other Person (or any Affiliate or Associate of such other Person)
           with which such Person (or any of such Person's Affiliates or
           Associates) has any agreement, arrangement or understanding (whether
           or not in writing), for the purpose of acquiring, holding, voting
           (except pursuant to a revocable proxy as described in the proviso to
           subparagraph (i) of this paragraph (c)) or disposing of such
           securities; or

             (iii)  which such Person or any of such Person's Affiliates or
           Associates, directly or indirectly, has the right to acquire (whether
           such right is exercisable immediately or only after the passage of
           time or upon the satisfaction of conditions) pursuant to any
           agreement, arrangement or understanding (whether or not in writing)
           or upon the exercise of conversion rights, exchange rights, rights,
           warrants or options, or otherwise; provided, however, that under this
                                              --------  -------                 
           paragraph (c) a Person shall not be deemed the "Beneficial Owner" of,
           or to "beneficially own", (A) securities tendered pursuant to a
           tender or exchange offer made in accordance with Exchange Act
           Regulations by such Person or any of such Person's Affiliates or
           Associates until such tendered securities are accepted for purchase
           or exchange, (B) securities that may be issued upon exercise of
           Rights at any time prior to the occurrence of a Triggering Event, or
           (C) securities that may be issued upon exercise of Rights from and
           after the occurrence of a Triggering Event, which Rights were
           acquired by such Person or any of such Person's Affiliates or
           Associates prior to the Distribution Date or pursuant to Section 3(c)
           or Section 22 hereof (the "Original Rights") or pursuant to Section
                                      ---------------                         
           11(i) hereof in connection with an adjustment made with respect to
           any Original Rights.

           (d)  "Business Day" shall mean any day other than a Saturday, Sunday
                 ------------                                                  
     or a day on which banking institutions in New York City are authorized or
     obligated by law or executive order to close.

           (e)  "Close of Business" on any given date shall mean 5:00 P.M., New
                 -----------------                                             
     York City time, on such date; provided, however, that if such date is not a
                                   --------  -------                            
     Business Day it shall mean 5:00 P.M., New York City time, on the next
     succeeding Business Day.

           (f)  "Common Stock" of any Person other than the Company shall mean
                 ------------                                                 
     the capital stock of such Person with the greatest voting power, or, if
     such Person shall have
<PAGE>
 
                                       3

     no capital stock, the equity securities or other equity interest having
     power to control or direct the management of such Person.

           (g)  "Company Common Stock" has the meaning set forth in the Whereas
                 --------------------                                          
     Clause.

           (h)  "Distribution Date" has the meaning set forth in Section 3(a).
                 -----------------                                            

           (i)  "Expiration Date" has the meaning set forth in Section 7(a).
                 ---------------                                            

           (j)  "Independent Director" shall mean a member of the Board of
                 --------------------                                     
     Directors of the Company who is not, and has never been, an officer or
     employee of the Company, who is not an Acquiring Person or an Affiliate or
     Associate of an Acquiring Person or a representative or nominee of an
     Acquiring Person or of any such Affiliate or Associate, and who either (i)
     was a member of the Board of Directors of the Company prior to the date
     hereof or (ii) subsequently became a director of the Company and whose
     election or nomination for election is approved or recommended by a vote of
     a majority of the Board of Directors of the Company, which majority
     includes a majority of the Independent Directors then on the Board of
     Directors.

           (k)  "Person" shall mean any individual, partnership, firm,
                 ------                                               
     corporation, association, trust, unincorporated organization or other
     entity, as well as any syndicate or group deemed to be a person under
     Section 14(d)(2) of the Exchange Act.

           (l)  "Preferred Stock" shall mean the Series A Preferred Stock, par
                 ---------------                                              
     value $.10 per share, of the Company having the voting powers, designation,
     preferences and relative, participating, optional or other special rights
     and qualifications, limitations and restrictions described in the
     Certificate of Designations set forth as Exhibit C hereto.

           (m)  "Purchase Price" has the meaning set forth in Section 7(b).
                 --------------                                            

           (n)  "Record Date" has the meaning set forth in the Whereas Clause.
                 -----------                                                  

           (o)  "Right" has the meaning set forth in the Whereas Clause.
                 -----                                                  

           (p)  "Rights Certificate" has the meaning set forth in Section 3(a).
                 ------------------                                            

           (q)  "Rights Dividend Declaration Date" has the meaning set forth in
                 --------------------------------                              
     the Whereas Clause.

           (r)  "Section 11(a)(ii) Event" shall mean any event described in
                 -----------------------                                   
     Section 11(a)(ii)(A), (B) or (C) hereof.

           (s)  "Section 13 Event" shall mean any event described in clause (x),
                 ----------------                                               
     (y) or (z) of Section 13(a) hereof.
<PAGE>
 
                                       4

           (t)  "Stock Acquisition Date" shall mean the first date of public
                 ----------------------                                     
     announcement (including, without limitation, the filing of any report
     pursuant to Section 13(d) of the Exchange Act) by the Company or an
     Acquiring Person that an Acquiring Person has become such.

           (u)  "Subsidiary" shall mean, with reference to any Person, any other
                 ----------                                                     
     Person of which an amount of voting securities or equity interests
     sufficient to elect at least a majority of the directors or equivalent
     governing body of such other Person is beneficially owned, directly or
     indirectly, by such Person, or otherwise controlled by such first-mentioned
     Person.

           (v)  "Summary of Rights" has the meaning set forth in Section 3(b).
                 -----------------                                            

           (w)  "Triggering Event" shall mean any Section 11(a)(ii) Event or any
                 ----------------                                               
     Section 13 Event.

           (x)  "Unit" has the meaning set forth in Section 7(b).
                 ----                                            

          SECTION 2.  Appointment of Rights Agent.  The Company hereby appoints
                      ---------------------------                              
the Rights Agent to act as agent for the Company in accordance with the terms
and conditions hereof, and the Rights Agent hereby accepts such appointment.
With the consent of the Rights Agent, the Company may from time to time appoint
such co-rights agents as it may deem necessary or desirable.

          SECTION 3.  Issue of Rights Certificates.  (a)  Until the earlier of
                      ----------------------------                            
(i) the Close of Business on the tenth Business Day after the Stock Acquisition
Date, and (ii) the Close of Business on the tenth Business Day (or such later
date as may be determined by action of a majority of the Independent Directors
prior to such time) after the date that a tender or exchange offer by any Person
(other than the Company, any Subsidiary of the Company, any employee benefit
plan maintained by the Company or any of its Subsidiaries or any trustee or
fiduciary with respect to such plan acting in such capacity) is first published
or sent or given within the meaning of Rule 14d-4(a) of the Exchange Act
Regulations or any successor rule, if upon consummation thereof such Person
would be the Beneficial Owner of 20% or more of the shares of Company Common
Stock then outstanding (the earlier of (i) and (ii) above being the
                                                                   
"Distribution Date"), (x) the Rights will be evidenced (subject to the
- - ------------------                                                    
provisions of paragraph (b) of this Section 3) by the certificates for shares of
Company Common Stock registered in the names of the holders of shares of Company
Common Stock as of and subsequent to the Record Date (which certificates for
shares of Company Common Stock shall be deemed also to be certificates for
Rights) and not by separate certificates, and (y) the Rights will be
transferable only in connection with the transfer of the underlying shares of
Company Common Stock (including a transfer to the Company).  As soon as
practicable after the Distribution Date, the Rights Agent will send by first-
class, insured, postage prepaid mail, to each record holder of shares of Company
Common Stock as of the Close of Business on the Distribution Date, at the
address of such holder shown on the records of the Company, one or more rights
certificates, in substantially the form of Exhibit A hereto (the "Rights
                                                                  ------
Certificates"), evidencing one Right for each share of Company Common Stock so
- - ------------                                                                  
held, subject to adjustment as provided herein.
<PAGE>
 
                                       5

In the event that an adjustment in the number of Rights per share of Company
Common Stock has been made pursuant to Section 11(p) hereof, at the time of
distribution of the Rights Certificates, the Company may make the necessary and
appropriate rounding adjustments (in accordance with Section 14(a) hereof) so
that Rights Certificates representing only whole numbers of Rights are
distributed and cash is paid in lieu of any fractional Rights.  As of and after
the Distribution Date, the Rights will be evidenced solely by such Rights
Certificates.

          (b)  As promptly as practicable following the Record Date, the Company
will send a copy of a Summary of Rights to Purchase Preferred Stock, in a form
which may be appended to certificates that represent shares of Company Common
Stock, in substantially the form attached hereto as Exhibit B (the "Summary of
                                                                    ----------
Rights"), by first-class, postage prepaid mail, to each record holder of shares
- - ------                                                                         
of Company Common Stock as of the Close of Business on the Record Date, at the
address of such holder shown on the records of the Company.

          (c)  Rights shall, without any further action, be issued in respect of
all shares of Company Common Stock which are issued (including any shares of
Company Common Stock held in treasury) after the Record Date but prior to the
earlier of the Distribution Date and the Expiration Date.  Certificates,
representing such shares of Company Common Stock, issued after the Record Date
shall bear the following legend:

           "This certificate also evidences and entitles the holder hereof to
     certain Rights as set forth in the Rights Agreement between Magma Power
     Company (the "Company") and Chemical Trust Company of California (the
                                                                          
     "Rights Agent") dated as of October 6, 1994 (the "Rights Agreement"), the
     -------------                                      ----------------       
     terms of which are hereby incorporated herein by reference and a copy of
     which is on file at the principal office of the stock transfer
     administration office of the Rights Agent.  Under certain circumstances, as
     set forth in the Rights Agreement, such Rights will be evidenced by
     separate certificates and will no longer be evidenced by this certificate.
     The Company will mail to the holder of this certificate a copy of the
     Rights Agreement, as in effect on the date of mailing, without charge
     promptly after receipt of a written request therefor.  Under certain
     circumstances set forth in the Rights Agreement, Rights issued to, or held
     by, any Person who is, was or becomes an Acquiring Person or any Affiliate
     or Associate thereof (as such terms are defined in the Rights Agreement),
     whether currently held by or on behalf of such Person or by any subsequent
     holder, may become null and void."  With respect to certificates
     representing shares of Company Common Stock (whether or not such
     certificates include the foregoing legend or have appended to them the
     Summary of Rights), until the earlier of the Distribution Date and the
     Expiration Date, the Rights associated with the shares of Company Common
     Stock represented by such certificates shall be evidenced by such
     certificates alone and registered holders of the shares of Company Common
     Stock shall also be the registered holders of the associated Rights, and
     the transfer of any of such certificates shall also constitute the transfer
     of the Rights associated with the shares of Company Common Stock
     represented by such certificates.

          SECTION 4.  Form of Rights Certificates.  (a)  The Rights Certificates
                      ---------------------------                               
(and the forms of election to purchase, assignment and certificate to be printed
on the reverse thereof) shall each be substantially in the form set forth in
Exhibit A hereto and may have such marks
<PAGE>
 
                                       6

of identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or any rule or regulation thereunder or with any rule or
regulation of any stock exchange or automated quotation system on which the
Rights may from time to time be listed or to conform to usage.  Subject to the
provisions of Section 11 and Section 22 hereof, the Rights Certificates,
whenever distributed, shall be dated as of the Record Date and on their face
shall entitle the holders thereof to purchase such number of Units of Preferred
Stock as shall be set forth therein at the price set forth therein, but the
amount and type of securities, cash or other assets that may be acquired upon
the exercise of each Right and the Purchase Price thereof shall be subject to
adjustment as provided herein.

          (b)  Any Rights Certificate issued pursuant hereto that represents
Rights beneficially owned by:  (i) an Acquiring Person or any Associate or
Affiliate of an Acquiring Person, (ii) a transferee of an Acquiring Person (or
of any such Associate or Affiliate) which becomes a transferee after the
Acquiring Person becomes such, or (iii) a transferee of an Acquiring Person (or
of any such Associate or Affiliate) which becomes a transferee prior to or
concurrently with the Acquiring Person becoming such and which receives such
Rights pursuant to either (A) a transfer (whether or not for consideration) from
the Acquiring Person (or any such Associate or Affiliate) to holders of equity
interests in such Acquiring Person (or such Associate or Affiliate) or to any
Person with whom such Acquiring Person (or such Associate or Affiliate) has any
continuing agreement, arrangement or understanding regarding either the
transferred Rights, shares of Company Common Stock or the Company or (B) a
transfer which a majority of the Independent Directors has determined to be part
of a plan, arrangement or understanding which has as a primary purpose or effect
the avoidance of Section 7(e) hereof shall, upon the written direction of a
majority of the Independent Directors, contain (to the extent feasible) the
following legend:

           The Rights represented by this Rights Certificate are or were
     beneficially owned by a Person who was or became an Acquiring Person or an
     Affiliate or Associate of an Acquiring Person (as such terms are defined in
     the Rights Agreement).  Accordingly, this Rights Certificate and the Rights
     represented hereby may become null and void in the circumstances specified
     in Section 7(e) of such Agreement.

          SECTION 5.  Countersignature and Registration.  (a)  Rights
                      ---------------------------------              
Certificates shall be executed on behalf of the Company by its Chairman of the
Board, the President or one of its Vice Presidents under its corporate seal
reproduced thereon attested by its Secretary, Treasurer or one of its Assistant
Secretaries.  The signature of any of these officers on the Rights Certificates
may be manual or facsimile.  Rights Certificates bearing the manual or facsimile
signatures of the individuals who were at any time the proper officers of the
Company shall bind the Company, notwithstanding that such individuals or any of
them have ceased to hold such offices prior to the countersignature of such
Rights Certificates or did not hold such offices at the date of such Rights
Certificates.  No Rights Certificate shall be entitled to any benefit under this
Agreement or be valid for any purpose unless there appears on such Rights
Certificate a countersignature duly executed by the Rights Agent by manual
signature of an authorized signatory, and such countersignature upon any Rights
Certificate shall be conclusive evidence,
<PAGE>
 
                                       7

and the only evidence, that such Rights Certificate has been duly countersigned
as required hereunder.

          (b)  Following the Distribution Date, the Rights Agent will keep or
cause to be kept, at its office designated for surrender of Rights Certificates
upon exercise or transfer, books for registration and transfer of the Rights
Certificates issued hereunder.  Such books shall show the name and address of
each holder of the Rights Certificates, the number of Rights evidenced on its
face by each Rights Certificate and the date of each Rights Certificate.

          SECTION 6.  Transfer, Split Up, Combination and Exchange of Rights
                      ------------------------------------------------------
Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates.  (a)
- - ----------------------------------------------------------------------       
Subject to the provisions of Sections 4(b), 7(e) and 14 hereof, at any time
after the Close of Business on the Distribution Date, and at or prior to the
Close of Business on the Expiration Date, any Rights Certificate or Certificates
may be transferred, split up, combined or exchanged for another Rights
Certificate or Certificates, entitling the registered holder to purchase a like
number of Units of Preferred Stock (or, following a Triggering Event, other
securities, cash or other assets, as the case may be) as the Rights Certificate
or Certificates surrendered then entitled such holder to purchase.  Any
registered holder desiring to transfer, split up, combine or exchange any Rights
Certificate or Certificates shall make such request in writing delivered to the
Rights Agent, and shall surrender the Rights Certificate or Certificates to be
transferred, split up, combined or exchanged at the office of the Rights Agent
designated for such purpose.  Neither the Rights Agent nor the Company shall be
obligated to take any action whatsoever with respect to the transfer of any such
surrendered Rights Certificate until the registered holder shall have completed
and executed the certificate set forth in the form of assignment on the reverse
side of such Rights Certificate and shall have provided such additional evidence
of the identity of the Beneficial Owner (or former Beneficial Owner) of the
Rights represented by such Rights Certificate or Affiliates or Associates
thereof as the Company shall reasonably request; whereupon the Rights Agent
shall, subject to the provisions of Section 4(b), Section 7(e) and Section 14
hereof, countersign and deliver to the Person entitled thereto a Rights
Certificate or Rights Certificates, as the case may be, as so requested.  The
Company may require payment of a sum sufficient to cover any tax or governmental
charge that may be imposed in connection with any transfer, split up,
combination or exchange of Rights Certificates.

          (b)  If a Rights Certificate shall be mutilated, lost, stolen or
destroyed, upon request by the registered holder of the Rights represented
thereby and upon payment to the Company and the Rights Agent of all reasonable
expenses incident thereto, there shall be issued, in exchange for and upon
cancellation of the mutilated Rights Certificate, or in substitution for the
lost, stolen or destroyed Rights Certificate, a new Rights Certificate, in
substantially the form of the prior Rights Certificate, of like tenor and
representing the equivalent number of Rights, but, in the case of loss, theft or
destruction, only upon receipt of evidence satisfactory to the Company and the
Rights Agent of such loss, theft or destruction of such Rights Certificate and,
if requested by the Company or the Rights Agent, indemnity also satisfactory to
it.

          SECTION 7.  Exercise of Rights; Purchase Price; Expiration Date of
                      ------------------------------------------------------
Rights.  (a)  Prior to the earlier of (i) the Close of Business on the tenth
- - ------                                                                      
anniversary hereof (the "Final Expiration Date"), and (ii) the time at which the
                         ---------------------                                  
Rights are redeemed as provided in Section 23
<PAGE>
 
                                       8

hereof (the earlier of (i) and (ii) being the "Expiration Date"), the registered
                                               ---------------                  
holder of any Rights Certificate may, subject to the provisions of Sections 7(e)
and 9(c) hereof, exercise the Rights evidenced thereby in whole or in part at
any time after the Distribution Date upon surrender of the Rights Certificate,
with the form of election to purchase and the certificate on the reverse side
thereof duly executed, to the Rights Agent at the office of the Rights Agent
designated for such purpose, together with payment of the aggregate Purchase
Price (as hereinafter defined) for the number of Units of Preferred Stock (or,
following a Triggering Event, other securities, cash or other assets, as the
case may be) for which such surrendered Rights are then exercisable.

          (b)  The purchase price for each one one-thousandth of a share (each
such one one-thousandth of a share being a "Unit") of Preferred Stock upon
                                            ----                          
exercise of Rights shall be $125, subject to adjustment from time to time as
provided in Sections 11 and 13(a) hereof (such purchase price, as so adjusted,
being the "Purchase Price"), and shall be payable in accordance with paragraph
           --------------                                                     
(c) below.

          (c)  As promptly as practicable following the occurrence of the
Distribution Date, the Company shall deposit with a corporation in good standing
organized under the laws of the United States or any State of the United States,
which is authorized under such laws to exercise corporate trust or stock
transfer powers and is subject to supervision or examination by federal or state
authority (such institution being the "Depositary Agent"), certificates
                                       ----------------                
representing the shares of Preferred Stock that may be acquired upon exercise of
the Rights and shall cause such Depositary Agent to enter into an agreement
pursuant to which the Depositary Agent shall issue receipts representing
interests in the shares of Preferred Stock so deposited.  Upon receipt of a
Rights Certificate representing exercisable Rights, with the form of election to
purchase and the certificate duly executed, accompanied by payment, with respect
to each Right so exercised, of the Purchase Price for the Units of Preferred
Stock (or, following a Triggering Event, other securities, cash or other assets,
as the case may be) to be purchased thereby as set forth below and an amount
equal to any applicable transfer tax or evidence satisfactory to the Company of
payment of such tax, the Rights Agent shall, subject to Section 20(k) hereof,
thereupon promptly (i) requisition from the Depositary Agent depositary receipts
representing such number of Units of Preferred Stock as are to be purchased and
the Company will direct the Depositary Agent to comply with such request, (ii)
requisition from the Company the amount of cash, if any, to be paid in lieu of
fractional shares in accordance with Section 14 hereof, (iii) after receipt of
such depositary receipts, cause the same to be delivered to or upon the order of
the registered holder of such Rights Certificate, registered in such name or
names as may be designated by such holder, and (iv) after receipt thereof,
deliver such cash, if any, to or upon the order of the registered holder of such
Rights Certificate.  In the event that the Company is obligated to issue Company
Common Stock, other securities of the Company, pay cash and/or distribute other
property pursuant to Section 11(a) hereof, the Company will make all
arrangements necessary so that such Company Common Stock, other securities, cash
and/or other property are available for distribution by the Rights Agent, if and
when appropriate.  The payment of the Purchase Price (as such amount may be
reduced pursuant to Section 11(a)(iii) hereof) may be made in cash or by
certified or bank check or money order payable to the order of the Company.
<PAGE>
 
                                       9

          (d)  In case the registered holder of any Rights Certificate shall
exercise less than all the Rights evidenced thereby, a new Rights Certificate
evidencing the Rights remaining unexercised shall be issued by the Rights Agent
and delivered to, or upon the order of, the registered holder of such Rights
Certificate, registered in such name or names as may be designated by such
holder, subject to the provisions of Section 14 hereof.

          (e)  Notwithstanding anything in this Agreement to the contrary, from
and after the first occurrence of any Section 11(a)(ii) Event, any Rights
beneficially owned by (i) an Acquiring Person or an Associate or Affiliate of an
Acquiring Person, (ii) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) which becomes a transferee after the Acquiring Person
becomes such, or (iii) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) which becomes a transferee prior to or concurrently with
the Acquiring Person becoming such and which receives such Rights pursuant to
either (A) a transfer (whether or not for consideration) from the Acquiring
Person (or any such Associate or Affiliate) to holders of equity interests in
such Acquiring Person (or any such Associate or Affiliate) or to any Person with
whom the Acquiring Person (or such Associate or Affiliate) has any continuing
agreement, arrangement or understanding regarding the transferred Rights, shares
of Company Common Stock or the Company or (B) a transfer which a majority of the
Independent Directors has determined to be part of a plan, arrangement or
understanding which has as a primary purpose or effect the avoidance of this
Section 7(e), shall be null and void without any further action, and no holder
of such Rights shall have any rights whatsoever with respect to such Rights,
whether under any provision of this Agreement or otherwise.  The Company shall
use all reasonable efforts to ensure that the provisions of this Section 7(e)
and Section 4(b) hereof are complied with, but shall have no liability to any
holder of Rights or any other Person as a result of its failure to make any
determination under this Section 7(e) or such Section 4(b) with respect to an
Acquiring Person or its Affiliates, Associates or transferees.

          (f)  Notwithstanding anything in this Agreement or any Rights
Certificate to the contrary, neither the Rights Agent nor the Company shall be
obligated to undertake any action with respect to a registered holder upon the
occurrence of any purported exercise by such registered holder unless such
registered holder shall have (i) completed and executed the certificate
following the form of election to purchase set forth on the reverse side of the
Rights Certificate surrendered for such exercise, and (ii) provided such
additional evidence of the identity of the Beneficial Owner (or former
Beneficial Owner) of the Rights represented by such Rights Certificate or
Affiliates or Associates thereof as the Company shall reasonably request.

          SECTION 8.  Cancellation and Destruction of Rights Certificates.  All
                      ---------------------------------------------------      
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or any of its
agents, be delivered to the Rights Agent for cancellation or in cancelled form,
or, if surrendered to the Rights Agent, shall be cancelled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
this Agreement.  The Company shall deliver to the Rights Agent for cancellation
and retirement, and the Rights Agent shall so cancel and retire, any Rights
Certificates acquired by the Company otherwise than upon the exercise thereof.
The Rights Agent shall deliver all cancelled Rights Certificates to the Company,
or shall, at the written request of the Company, destroy such
<PAGE>
 
                                       10

cancelled Rights Certificates, and in such case shall deliver a certificate of
destruction thereof to the Company.

          SECTION 9.  Reservation and Availability of Capital Stock.  (a)  The
                      ---------------------------------------------           
Company shall at all times prior to the Expiration Date cause to be reserved and
kept available, out of its authorized and unissued shares of Preferred Stock,
the number of shares of Preferred Stock that, as provided in this Agreement,
will be sufficient to permit the exercise in full of all outstanding Rights.
Upon the occurrence of any events resulting in an increase in the aggregate
number of shares of Preferred Stock (or other equity securities of the Company)
issuable upon exercise of all outstanding Rights above the number then reserved,
the Company shall make appropriate increases in the number of shares so
reserved.

          (b)  If the shares of Preferred Stock to be issued and delivered upon
the exercise of the Rights may be listed on any national securities exchange,
the Company shall during the period from the Distribution Date through the
Expiration Date use its best efforts to cause all securities reserved for such
issuance to be listed on such exchange upon official notice of issuance upon
such exercise.

          (c)  The Company shall use its best efforts (i) as soon as practicable
following the occurrence of a Section 11(a)(ii) Event and a determination by the
Company in accordance with Section 11(a)(iii) hereof of the consideration to be
delivered by the Company upon exercise of the Rights or, if so required by law,
as soon as practicable following the Distribution Date (such date being the
                                                                           
"Registration Date"), to file a registration statement on an appropriate form
- - ------------------                                                           
under the Securities Act of 1933, as amended (the "Securities Act"), with
                                                   --------------        
respect to the securities that may be acquired upon exercise of the Rights (the
"Registration Statement"), (ii) to cause the Registration Statement to become
 ----------------------                                                      
effective as soon as practicable after such filing, (iii) to cause the
Registration Statement to continue to be effective (and to include a prospectus
complying with the requirements of the Securities Act) until the earlier of (A)
the date as of which the Rights are no longer exercisable for the securities
covered by the Registration Statement, and (B) the Expiration Date and (iv) to
take as soon as practicable following the Registration Date such action as may
be required to ensure that any acquisition of securities upon exercise of the
Rights complies with any applicable state securities or "blue sky" laws.

          (d)  The Company shall take such action as may be necessary to ensure
that all shares of Preferred Stock (and, following the occurrence of a
Triggering Event, any other securities that may be delivered upon exercise of
Rights) shall be, at the time of delivery of the certificates or depositary
receipts for such securities, duly and validly authorized and issued and fully
paid and non-assessable.

          (e)  The Company shall pay any documentary, stamp or transfer tax
imposed in connection with the issuance or delivery of the Rights Certificates
or upon the exercise of Rights; provided, however, the Company shall not be
                                --------  -------                          
required to pay any such tax imposed in connection with the issuance or delivery
of Units of Preferred Stock, or any certificates or depositary receipts for such
Units of Preferred Stock (or, following the occurrence of a Triggering Event,
any other securities, cash or assets, as the case may be) to any person other
than the registered holder of the Rights Certificates evidencing the Rights
surrendered for
<PAGE>
 
                                       11

exercise.  The Company shall not be required to issue or deliver any
certificates or depositary receipts for Units of Preferred Stock (or, following
the occurrence of a Triggering Event, any other securities, cash or assets, as
the case may be) to, or in a name other than that of, the registered holder upon
the exercise of any Rights until any such tax shall have been paid (any such tax
being payable by the holder of such Rights Certificate at the time of surrender)
or until it has been established to the Company's satisfaction that no such tax
is due.

          SECTION 10.  Preferred Stock Record Date.  Each Person in whose name
                       ---------------------------                            
any certificate for Units of Preferred Stock (or, following the occurrence of a
Triggering Event, other securities) is issued upon the exercise of Rights shall
for all purposes be deemed to have become the holder of record of the Units of
Preferred Stock (or, following the occurrence of a Triggering Event, other
securities) represented thereby on, and such certificate shall be dated, the
date upon which the Rights Certificate evidencing such Rights was duly
surrendered and payment of the Purchase Price (and any applicable transfer
taxes) was made; provided, however, that if the date of such surrender and
                 --------  -------                                        
payment is a date upon which the Preferred Stock (or, following the occurrence
of a Triggering Event, other securities) transfer books of the Company are
closed, such Person shall be deemed to have become the record holder of such
securities on, and such certificate shall be dated, the next succeeding Business
Day on which the Preferred Stock (or, following the occurrence of a Triggering
Event, other securities) transfer books of the Company are open and, further
                                                                     -------
provided, however, that if delivery of Units of Preferred Stock is delayed
- - --------  -------                                                         
pursuant to Section 9(c) hereof, such Persons shall be deemed to have become the
record holders of such Units of Preferred Stock only when such Units first
become deliverable.  Prior to the exercise of the Rights evidenced thereby, the
holder of a Rights Certificate shall not be entitled to any rights of a
stockholder of the Company with respect to securities for which the Rights shall
be exercisable, including, without limitation, the right to vote, to receive
dividends or other distributions or to exercise any preemptive rights, and shall
not be entitled to receive any notice of any proceedings of the Company, except
as provided herein.

          SECTION 11.  Adjustment of Purchase Price, Number and Kind of Shares
                       -------------------------------------------------------
or Number of Rights.  The Purchase Price, the number and kind of securities
- - -------------------                                                        
covered by each Right and the number of Rights outstanding are subject to
adjustment from time to time as provided in this Section 11.

           (a)  (i)  In the event the Company shall at any time after the date
     of this Agreement (A) declare a dividend on the Preferred Stock payable in
     shares of Preferred Stock, (B) subdivide the outstanding Preferred Stock,
     (C) combine the outstanding Preferred Stock into a smaller number of
     shares, or (D) issue any shares of its capital stock in a reclassification
     of the Preferred Stock (including any such reclassification in connection
     with a consolidation or merger in which the Company is the continuing or
     surviving corporation), except as otherwise provided in this Section 11(a),
     the Purchase Price in effect at the time of the record date for such
     dividend or of the effective date of such subdivision, combination or
     reclassification, and the number and kind of shares of Preferred Stock or
     capital stock, as the case may be, issuable on such date upon exercise of
     the Rights, shall be proportionately adjusted so that the holder of any
     Right exercised after such time shall be entitled to receive, upon payment
     of the Purchase Price then in
<PAGE>
 
                                       12

     effect, the aggregate number and kind of shares of Preferred Stock or
     capital stock, as the case may be, which, if such Right had been exercised
     immediately prior to such date, such holder would have owned upon such
     exercise and been entitled to receive by virtue of such dividend,
     subdivision, combination or reclassification.  If an event occurs which
     would require an adjustment under both this Section 11(a)(i) and Section
     11(a)(ii) hereof, the adjustment provided for in this Section 11(a)(i)
     shall be in addition to, and shall be made prior to, any adjustment
     required pursuant to Section 11(a)(ii) hereof.

           (ii)  In the event:

               (A)  any Acquiring Person or any Associate or Affiliate of any
           Acquiring Person, at any time after the date of this Agreement,
           directly or indirectly, (1) shall merge into the Company or otherwise
           combine with the Company and the Company shall be the continuing or
           surviving corporation of such merger or combination and Company
           Common Stock shall remain outstanding and unchanged, (2) shall, in
           one transaction or a series of transactions, transfer any assets to
           the Company or to any of its Subsidiaries in exchange (in whole or in
           part) for shares of Company Common Stock, for other equity securities
           of the Company or any such Subsidiary, or for securities exercisable
           for or convertible into shares of equity securities of the Company or
           any of its Subsidiaries (whether Company Common Stock or otherwise)
           or otherwise obtain from the Company or any of its Subsidiaries, with
           or without consideration, any additional shares of such equity
           securities or securities exercisable for or convertible into such
           equity securities (other than pursuant to a pro rata distribution to
           all holders of Company Common Stock), (3) shall sell, purchase,
           lease, exchange, mortgage, pledge, transfer or otherwise acquire or
           dispose of, in one transaction or a series of transactions, to, from
           or with the Company or any of its Subsidiaries or any employee
           benefit plan maintained by the Company or any of its Subsidiaries or
           any trustee or fiduciary with respect to such plan acting in such
           capacity, assets (including securities) on terms and conditions less
           favorable to the Company or such Subsidiary or plan than those that
           could have been obtained in arm's-length negotiations with an
           unaffiliated third party, other than pursuant to a transaction set
           forth in Section 13(a) hereof, (4) shall sell, purchase, lease,
           exchange, mortgage, pledge, transfer or otherwise acquire or dispose
           of, in one transaction or a series of transactions, to, from or with
           the Company or any of the Company's Subsidiaries or any employee
           benefit plan maintained by the Company or any of its Subsidiaries or
           any trustee or fiduciary with respect to such plan acting in such
           capacity (other than transactions, if any, consistent with those
           engaged in, as of the date hereof, by the Company and such Acquiring
           Person or such Associate or Affiliate), assets (including securities)
           having an aggregate fair market value of more than $5,000,000, other
           than pursuant to a transaction set forth in Section 13(a) hereof, (5)
           shall sell, purchase, lease, exchange, mortgage, pledge, transfer or
           otherwise acquire or dispose of, in one transaction or a series of
           transactions, to, from or with the Company or any of its Subsidiaries
           or any employee benefit plan maintained by the Company or any of its
           Subsidiaries or any trustee
<PAGE>
 
                                       13

           or fiduciary with respect to such plan acting in such capacity, any
           material trademark or material service mark, other than pursuant to a
           transaction set forth in Section 13(a) hereof, (6) shall receive, or
           any designee, agent or representative of such Acquiring Person or any
           Affiliate or Associate of such Acquiring Person shall receive, any
           compensation from the Company or any of its Subsidiaries other than
           compensation for full-time employment as a regular employee at rates
           in accordance with the Company's (or its Subsidiaries') past
           practices, or (7) shall receive the benefit, directly or indirectly
           (except proportionately as a holder of Company Common Stock or as
           required by law or governmental regulation), of any loans, advances,
           guarantees, pledges or other financial assistance or any tax credits
           or other tax advantage provided by the Company or any of its
           Subsidiaries or any employee benefit plan maintained by the Company
           or any of its Subsidiaries or any trustee or fiduciary with respect
           to such plan acting in such capacity; or

               (B)  any Person (other than the Company, any Subsidiary of the
           Company, any employee benefit plan maintained by the Company or any
           of its Subsidiaries or any trustee or fiduciary with respect to such
           plan acting in such capacity) shall become the Beneficial Owner of
           10% or more of the shares of Company Common Stock then outstanding,
           other than pursuant to any transaction set forth in Section 13(a)
           hereof; or

               (C)  during such time as there is an Acquiring Person, there
           shall be any reclassification of securities (including any reverse
           stock split), or recapitalization of the Company, or any merger or
           consolidation of the Company with any of its Subsidiaries or any
           other transaction or series of transactions involving the Company or
           any of its Subsidiaries, other than a transaction or transactions to
           which the provisions of Section 13(a) apply (whether or not with or
           into or otherwise involving an Acquiring Person), which has the
           effect, directly or indirectly, of increasing by more than 1% the
           proportionate share of the outstanding shares of any class of equity
           securities of the Company or any of its Subsidiaries that is directly
           or indirectly beneficially owned by any Acquiring Person or any
           Associate or Affiliate of any Acquiring Person;

           then, immediately upon the date of the occurrence of an event
           ----                                                         
           described in Section 11(a)(ii)(A)-(C) hereof (a "Section 11(a)(ii)
                                                            -----------------
           Event"), proper provision shall be made so that each holder of a
           -----                                                           
           Right (except as provided below and in Section 7(e) hereof) shall
           thereafter have the right to receive, upon exercise thereof at the
           then current Purchase Price in accordance with the terms of this
           Agreement, in lieu of the number of Units of Preferred Stock for
           which a Right was exercisable immediately prior to the first
           occurrence of a Section 11(a)(ii) Event, such number of Units of
           Preferred Stock as shall equal the result obtained by (x) multiplying
           the then current Purchase Price by the then number of Units of
           Preferred Stock for which a Right was exercisable immediately prior
           to the first occurrence of a Section 11(a)(ii) Event (such product
           thereafter
<PAGE>
 
                                       14

           being, for all purposes of this Agreement other than Section 13
           hereof, the "Purchase Price"), and (y) dividing that product by 50%
                        --------------                                        
           of the then current market price (determined pursuant to Section
           11(d) hereof) per Unit of Preferred Stock on the date of such first
           occurrence (such Units of Preferred Stock being the "Adjustment
                                                                ----------
           Shares").
           ------   

           (iii)  In the event that the number of shares of Preferred Stock
     which are authorized by the Company's Articles of Incorporation but not
     outstanding or reserved for issuance for purposes other than upon exercise
     of the Rights is not sufficient to permit the exercise in full of the
     Rights in accordance with the foregoing subparagraph (ii) of this Section
     11(a), the Company, by the vote of a majority of the Independent Directors,
     shall:  (A) determine the excess of (1) the value of the Adjustment Shares
     issuable upon the exercise of a Right (the "Current Value") over (2) the
                                                 -------------               
     Purchase Price (such excess being the "Spread"), and (B) with respect to
                                            ------                           
     each Right, make adequate provision to substitute for such Adjustment
     Shares, upon payment of the applicable Purchase Price, (1) cash, (2) a
     reduction in the Purchase Price, (3) Company Common Stock or other equity
     securities of the Company (including, without limitation, shares, or units
     of shares, of preferred stock (such other shares being "preferred stock
                                                             ---------------
     equivalents")), (4) debt securities of the Company, (5) other assets, or
     -----------                                                             
     (6) any combination of the foregoing, having an aggregate value equal to
     the Current Value, where such aggregate value has been determined by a
     majority of the Independent Directors, after receiving advice from a
     nationally recognized investment banking firm; provided, however, that if
                                                    --------  -------         
     the Company shall not have made adequate provision to deliver value
     pursuant to clause (B) above within thirty days following the later of (x)
     the first occurrence of a Section 11(a)(ii) Event and (y) the date on which
     the Company's right of redemption pursuant to Section 23(a) expires (the
     later of (x) and (y) being referred to herein as the "Section 11(a)(iii)
                                                           ------------------
     Trigger Date"), then the Company shall be obligated to deliver, upon the
     ------------                                                            
     surrender for exercise of a Right and without requiring payment of the
     Purchase Price, Units of Preferred Stock (to the extent available) and
     then, if necessary, cash, which Units of Preferred Stock and/or cash shall
     have an aggregate value equal to the Spread.  To the extent that the
     Company determines that some action need be taken pursuant to the first
     sentence of this Section 11(a)(iii), the Company shall provide, subject to
     Section 7(e) hereof, that such action shall apply uniformly to all
     outstanding Rights.  For purposes of this Section 11(a)(iii), the value of
     a Unit of Preferred Stock shall be the current market price (as determined
     pursuant to Section 11(d) hereof) per Unit of Preferred Stock on the
     Section 11(a)(iii) Trigger Date and the value of any preferred stock
     equivalent shall be deemed to have the same value as the Preferred Stock on
     such date.

           (b)  In case the Company shall fix a record date for the issuance of
     rights, options or warrants to all holders of Preferred Stock entitling
     them to subscribe for or purchase (for a period expiring within forty-five
     calendar days after such record date) shares of Preferred Stock (or shares
     having substantially the same rights, privileges and preferences as shares
     of Preferred Stock ("Equivalent Preferred Stock")) or securities
                          --------------------------                 
     convertible into Preferred Stock or Equivalent Preferred Stock at a price
     per share of Preferred Stock or per share of Equivalent Preferred Stock (or
     having a conversion price
<PAGE>
 
                                       15

     per share, if a security convertible into Preferred Stock or Equivalent
     Preferred Stock) less than the current market price (as determined pursuant
     to Section 11(d) hereof) per share of Preferred Stock on such record date,
     the Purchase Price to be in effect after such record date shall be
     determined by multiplying the Purchase Price in effect immediately prior to
     such record date by a fraction, the numerator of which shall be the sum of
     the number of shares of Preferred Stock outstanding on such record date
     plus the number of shares of Preferred Stock which the aggregate offering
     price of the total number of shares of Preferred Stock and/or Equivalent
     Preferred Stock so to be offered (and/or the aggregate initial conversion
     price of the convertible securities so to be offered) would purchase at
     such current market price, and the denominator of which shall be the number
     of shares of Preferred Stock outstanding on such record date plus the
     number of additional shares of Preferred Stock and/or Equivalent Preferred
     Stock to be offered for subscription or purchase (or into which the
     convertible securities so to be offered are initially convertible).  In
     case such subscription price may be paid by delivery of consideration part
     or all of which may be in a form other than cash, the value of such
     consideration shall be as determined in good faith by a majority of the
     Independent Directors, whose determination shall be described in a
     statement filed with the Rights Agent and shall be binding on the Rights
     Agent and the holders of the Rights.  Shares of Preferred Stock owned by or
     held for the account of the Company or any Subsidiary shall not be deemed
     outstanding for the purpose of any such computation.  Such adjustment shall
     be made successively whenever such a record date is fixed, and in the event
     that such rights or warrants are not so issued, the Purchase Price shall be
     adjusted to be the Purchase Price which would then be in effect if such
     record date had not been fixed.

           (c)  In case the Company shall fix a record date for a distribution
     to all holders of shares of Preferred Stock (including any such
     distribution made in connection with a consolidation or merger in which the
     Company is the continuing corporation) of evidences of indebtedness, cash
     (other than a regular quarterly cash dividend paid out of funds legally
     available therefor), assets (other than a dividend payable in shares of
     Preferred Stock, but including any dividend payable in stock other than
     Preferred Stock) or subscription rights or warrants (excluding those
     referred to in Section 11(b) hereof), the Purchase Price to be in effect
     after such record date shall be determined by multiplying the Purchase
     Price in effect immediately prior to such record date by a fraction, the
     numerator of which shall be the current market price (as determined
     pursuant to Section 11(d) hereof) per share of Preferred Stock on such
     record date less the fair market value (as determined in good faith by a
     majority of the Independent Directors, whose determination shall be
     described in a statement filed with the Rights Agent and shall be binding
     on the Rights Agent and the holder of the Rights) of the cash, assets or
     evidences of indebtedness so to be distributed or of such subscription
     rights or warrants distributable in respect of a share of Preferred Stock
     and the denominator of which shall be such current market price (as
     determined pursuant to Section 11(d) hereof) per share of Preferred Stock.
     Such adjustments shall be made successively whenever such a record date is
     fixed, and in the event that such distribution is not so made, the Purchase
     Price shall be adjusted to be the Purchase Price which would have been in
     effect if such record date had not been fixed.
<PAGE>
 
                                       16

     (d)  (i)  For the purpose of any computation hereunder, the "current market
     price" per share of Company Common Stock or Common Stock on any date shall
     be deemed to be the average of the daily closing prices per share of such
     shares for the ten consecutive Trading Days (as such term is hereinafter
     defined) immediately prior to such date; provided, however, if prior to the
                                              --------  -------                 
     expiration of such requisite ten Trading Day period the issuer announces
     either (A) a dividend or distribution on such shares payable in such shares
     or securities convertible into such shares (other than the Rights), or (B)
     any subdivision, combination or reclassification of such shares, then,
     following the ex-dividend date for such dividend or the record date for
     such subdivision, as the case may be, the "current market price" shall be
     properly adjusted to take into account such event.  The closing price for
     each day shall be, if the shares are listed and admitted to trading on a
     national securities exchange, as reported in the principal consolidated
     transaction reporting system with respect to securities listed on the
     principal national securities exchange on which such shares are listed or
     admitted to trading or, if such shares are not listed or admitted to
     trading on any national securities exchange, the last quoted price or, if
     not so quoted, the average of the high bid and low asked prices in the
     over-the-counter market, as reported by the Nasdaq Stock Market ("Nasdaq")
     or such other system then in use, or, if on any such date such shares are
     not quoted by any such organization, the average of the closing bid and
     asked prices as furnished by a professional market maker making a market in
     such shares selected by a majority of the Independent Directors.  If on any
     such date no market maker is making a market in such shares, the fair value
     of such shares on such date as determined in good faith by a majority of
     the Independent Directors shall be used.  If such shares are not publicly
     held or not so listed or traded, "current market price" per share shall
     mean the fair value per share as determined in good faith by a majority of
     the Independent Directors, whose determination shall be described in a
     statement filed with the Rights Agent and shall be conclusive for all
     purposes.  The term "Trading Day" shall mean, if such shares are listed or
                          -----------                                          
     admitted to trading on any national securities exchange, a day on which the
     principal national securities exchange on which such shares are listed or
     admitted to trading is open for the transaction of business or, if such
     shares are not so listed or admitted, a Business Day.

       (ii)  For the purpose of any computation hereunder, the "current market
     price" per share of Preferred Stock shall be determined in the same manner
     as set forth above for Company Common Stock in clause (i) of this Section
     11(d) (other than the fourth sentence thereof).  If the current market
     price per share of Preferred Stock cannot be determined in the manner
     provided above or if the Preferred Stock is not publicly held or listed or
     traded in a manner described in clause (i) of this Section 11(d), the
     "current market price" per share of Preferred Stock shall be conclusively
     deemed to be an amount equal to 1,000 (as such amount may be appropriately
     adjusted for such events as stock splits, stock dividends and
     recapitalizations with respect to Company Common Stock occurring after the
     date of this Agreement) multiplied by the current market price per share of
     Company Common Stock.  If neither Company Common Stock nor Preferred Stock
     is publicly held or so listed or traded, "current market price" per share
     of the Preferred Stock shall mean the fair value per share as determined in
     good faith by a majority of the Independent Directors whose determination
     shall be described in a statement filed with the Rights Agent and shall be
     binding on the Rights Agent and the
<PAGE>
 
                                       17

     holders of the Rights.  For all purposes of this Agreement, the "current
     market price" of a Unit of Preferred Stock shall be equal to the "current
     market price" of one share of Preferred Stock divided by 1,000.

           (e)  Anything herein to the contrary notwithstanding, no adjustment
     in the Purchase Price shall be required unless such adjustment would
     require an increase or decrease of at least 1% in the Purchase Price;
                                                                          
     provided, however, that any adjustments which by reason of this Section
     --------  -------                                                      
     11(e) are not required to be made shall be carried forward and taken into
     account in any subsequent adjustment.  All calculations under this Section
     11 shall be made to the nearest cent or to the nearest one-thousandth of a
     share of Company Common Stock or Common Stock or other share or ten-
     thousandth of a share of Preferred Stock, as the case may be.
     Notwithstanding the first sentence of this Section 11(e), any adjustment
     required by this Section 11 shall be made no later than the earlier of (i)
     three years from the date of the transaction which mandates such adjustment
     and (ii) the Expiration Date.

           (f)  If as a result of an adjustment made pursuant to Section
     11(a)(ii) or 13(a) hereof, the holder of any Right thereafter exercised
     shall become entitled to receive any shares of capital stock other than
     Preferred Stock, thereafter the number of such other shares so receivable
     upon exercise of any Right and the Purchase Price thereof shall be subject
     to adjustment from time to time in a manner and on terms as nearly
     equivalent as practicable to the provisions with respect to the Preferred
     Stock contained in Sections 11(a), (b), (c), (d), (e), (g), (h), (i), (j),
     (k), (l) and (m), and the provisions of Sections 7, 9, 10, 13 and 14 hereof
     with respect to the Preferred Stock shall apply on like terms to any such
     other shares.

           (g)  All Rights originally issued by the Company subsequent to any
     adjustment made to the Purchase Price hereunder shall evidence the right to
     purchase, at the adjusted Purchase Price, the number of Units of Preferred
     Stock (or other securities or amount of cash or combination thereof) that
     may be acquired from time to time hereunder upon exercise of the Rights,
     all subject to further adjustment as provided herein.

           (h)  Unless the Company shall have exercised its election as provided
     in Section 11(i), upon each adjustment of the Purchase Price as a result of
     the calculations made in Sections 11(b) and (c), each Right outstanding
     immediately prior to the making of such adjustment shall thereafter
     evidence the right to purchase, at the adjusted Purchase Price, that number
     of Units of Preferred Stock (calculated to the nearest one ten-thousandth
     of a Unit) obtained by (i) multiplying (x) the number of Units of Preferred
     Stock covered by a Right immediately prior to this adjustment by (y) the
     Purchase Price in effect immediately prior to such adjustment of the
     Purchase Price and (ii) dividing the product so obtained by the Purchase
     Price in effect immediately after such adjustment of the Purchase Price.

           (i)  The Company may elect on or after the date of any adjustment of
     the Purchase Price to adjust the number of Rights, in lieu of any
     adjustment in the number of Units of Preferred Stock that may be acquired
     upon the exercise of a Right.  Each of
<PAGE>
 
                                       18

     the Rights outstanding after the adjustment in the number of Rights shall
     be exercisable for the number of Units of Preferred Stock for which a Right
     was exercisable immediately prior to such adjustment.  Each Right held of
     record prior to such adjustment of the number of Rights shall become that
     number of Rights (calculated to the nearest ten-thousandth) obtained by
     dividing the Purchase Price in effect immediately prior to adjustment of
     the Purchase Price by the Purchase Price in effect immediately after
     adjustment of the Purchase Price.  The Company shall make a public
     announcement of its election to adjust the number of Rights, indicating the
     record date for the adjustment, and, if known at the time, the amount of
     the adjustment to be made.  This record date may be the date on which the
     Purchase Price is adjusted or any day thereafter, but, if the Rights
     Certificates have been issued, shall be at least ten days later than the
     date of such public announcement.  If Rights Certificates have been issued,
     upon each adjustment of the number of Rights pursuant to this Section
     11(i), the Company shall, as promptly as practicable, cause to be
     distributed to holders of record of Rights Certificates on such record date
     Rights Certificates evidencing, subject to Section 14 hereof, the
     additional Rights to which such holders shall be entitled as a result of
     such adjustment, or, at the option of the Company, shall cause to be
     distributed to such holders of record in substitution and replacement for
     the Rights Certificates held by such holders prior to the date of
     adjustment, and upon surrender thereof, if required by the Company, new
     Rights Certificates evidencing all the Rights to which such holders shall
     be entitled after such adjustment.  Rights Certificates to be so
     distributed shall be issued, executed and countersigned in the manner
     provided for herein (and may bear, at the option of the Company, the
     adjusted Purchase Price) and shall be registered in the names of the
     holders of record of Rights Certificates on the record date specified in
     the public announcement.

           (j)  Irrespective of any adjustment or change in the Purchase Price
     or the number of Units of Preferred Stock issuable upon the exercise of the
     Rights, the Rights Certificates theretofore and thereafter issued may
     continue to express the Purchase Price per Unit and the number of Units of
     Preferred Stock which were expressed in the Initial Rights Certificates
     issued hereunder.

           (k)  Before taking any action that would cause an adjustment reducing
     the Purchase Price below the then par value of the number of Units of
     Preferred Stock issuable upon exercise of the Rights, the Company shall
     take any corporate action which may, in the opinion of its counsel, be
     necessary in order that the Company may validly and legally issue such
     fully paid and non-assessable number of Units of Preferred Stock at such
     adjusted Purchase Price.

           (l)  In any case in which this Section 11 shall require that an
     adjustment in the Purchase Price be made effective as of a record date for
     a specified event, the Company may elect to defer until the occurrence of
     such event the issuance to the holder of any Right exercised after such
     record date of that number of Units of Preferred Stock and shares of other
     capital stock or securities of the Company, if any, issuable upon such
     exercise over and above the number of Units of Preferred Stock and shares
     of other capital stock or securities of the Company, if any, issuable upon
     such exercise on the
<PAGE>
 
                                       19

     basis of the Purchase Price in effect prior to such adjustment; provided,
                                                                     -------- 
     however, that the Company shall deliver to such holder a due bill or other
     -------                                                                   
     appropriate instrument evidencing such holder's right to receive such
     additional shares (fractional or otherwise) or securities upon the
     occurrence of the event requiring such adjustment.

           (m)  Anything in this Section 11 to the contrary notwithstanding, the
     Company shall be entitled to make such reductions in the Purchase Price, in
     addition to those adjustments expressly required by this Section 11, as and
     to the extent that in their good faith judgment a majority of the
     Independent Directors shall determine to be advisable in order that any (i)
     consolidation or subdivision of the Preferred Stock, (ii) issuance wholly
     for cash of any shares of Preferred Stock at less than the current market
     price, (iii) issuance wholly for cash of shares of Preferred Stock or
     securities which by their terms are convertible into or exchangeable for
     shares of Preferred Stock, (iv) stock dividends or (v) issuance of rights,
     options or warrants referred to in this Section 11, hereafter made by the
     Company to holders of its Preferred Stock, shall not be taxable to such
     holders or shall reduce the taxes payable by such holders.

           (n)  The Company shall not, at any time after the Distribution Date,
     (i) consolidate with any other Person (other than a Subsidiary of the
     Company in a transaction which complies with Section 11(o) hereof), (ii)
     merge with or into any other Person (other than a Subsidiary of the Company
     in a transaction which complies with Section 11(o) hereof), or (iii) sell
     or transfer (or permit any Subsidiary to sell or transfer), in one
     transaction, or a series of transactions, assets or earning power
     aggregating more than 50% of the assets or earning power of the Company and
     its Subsidiaries (taken as a whole) to any other Person or Persons (other
     than the Company and/or any of its Subsidiaries in one or more transactions
     each of which complies with Section 11(o) hereof), if (x) at the time of or
     immediately after such consolidation, merger or sale there are any rights,
     warrants or other instruments or securities outstanding or agreements in
     effect which would substantially diminish or otherwise eliminate the
     benefits intended to be afforded by the Rights or (y) prior to,
     simultaneously with or immediately after such consolidation, merger or
     sale, the Person which constitutes, or would constitute, the "Principal
     Party" for purposes of Section 13(a) hereof shall have distributed or
     otherwise transferred to its shareholders or other persons holding an
     equity interest in such Person Rights previously owned by such Person or
     any of its Affiliates and Associates; provided, however, this Section 11(n)
                                           --------  -------                    
     shall not affect the ability of any Subsidiary of the Company to
     consolidate with, merge with or into, or sell or transfer assets or earning
     power to, any other Subsidiary of the Company.

           (o)  After the Distribution Date, the Company shall not, except as
     permitted by Section 23 or Section 26 hereof, take (or permit any
     Subsidiary to take) any action if at the time such action is taken it is
     reasonably foreseeable that such action will diminish substantially or
     otherwise eliminate the benefits intended to be afforded by the Rights.

           (p)  Anything in this Agreement to the contrary notwithstanding, in
     the event that the Company shall at any time after the Rights Dividend
     Declaration Date and prior
<PAGE>
 
                                       20

     to the Distribution Date (i) declare a dividend on the outstanding shares
     of Company Common Stock payable in shares of Company Common Stock, (ii)
     subdivide the outstanding shares of Company Common Stock, (iii) combine the
     outstanding shares of Company Common Stock into a smaller number of shares,
     or (iv) issue any shares of its capital stock in a reclassification of
     Company Common Stock (including any such reclassification in connection
     with a consolidation or merger in which the Company is the continuing or
     surviving corporation), the number of Rights associated with each share of
     Company Common Stock then outstanding, or issued or delivered thereafter
     but prior to the Distribution Date, shall be proportionately adjusted so
     that the number of Rights thereafter associated with each share of Company
     Common Stock following any such event shall equal the result obtained by
     multiplying the number of Rights associated with each share of Company
     Common Stock immediately prior to such event by a fraction the numerator of
     which shall be the total number of shares of Company Common Stock
     outstanding immediately prior to the occurrence of the event and the
     denominator of which shall be the total number of shares of Company Common
     Stock outstanding immediately following the occurrence of such event.

          SECTION 12.  Certificate of Adjusted Purchase Price or Number of
                       ---------------------------------------------------
Shares.  Whenever an adjustment is made as provided in Section 11 or Section 13
- - ------                                                                         
hereof, the Company shall (a) promptly prepare a certificate setting forth such
adjustment and a brief statement of the facts accounting for such adjustment,
(b) promptly file with the Rights Agent, and with each transfer agent for the
Preferred Stock and the Company Common Stock, a copy of such certificate, and
(c) mail a brief summary thereof to each holder of a Rights Certificate (or, if
prior to the Distribution Date, to each holder of a certificate representing
shares of Company Common Stock) in accordance with Section 25 hereof.  The
Rights Agent shall be fully protected in relying on any such certificate and on
any adjustment therein contained and shall not be deemed to have knowledge of
any such adjustment unless and until it shall have received such certificate.

          SECTION 13.  Consolidation, Merger or Sale or Transfer of Assets or
                       ------------------------------------------------------
Earning Power.  (a)  In the event that, following the Stock Acquisition Date,
- - -------------                                                                
directly or indirectly, either (x) the Company shall consolidate with, or merge
with and into, any other Person (other than a Subsidiary of the Company in a
transaction which complies with Section 11(o) hereof), and the Company shall not
be the continuing or surviving corporation of such consolidation or merger, (y)
any Person (other than a Subsidiary of the Company in a transaction which
complies with Section 11(o) hereof) shall consolidate with, or merge with or
into, the Company, and the Company shall be the continuing or surviving
corporation of such consolidation or merger and, in connection with such
consolidation or merger, all or part of the outstanding shares of Company Common
Stock shall be converted into or exchanged for stock or other securities of any
other Person or cash or any other property, or (z) the Company shall sell or
otherwise transfer (or one or more of its Subsidiaries shall sell or otherwise
transfer) to any Person or Persons (other than the Company or any of its
Subsidiaries in one or more transactions each of which complies with Section
11(o) hereof), in one or more transactions, assets or earning power aggregating
more than 50% of the assets or earning power of the Company and its Subsidiaries
(taken as a whole) (any such event being a "Section 13 Event"), then, and in
                                            ----------------                
each such case, proper provision shall be made so that:  (i) each holder of a
Right, except as provided in
<PAGE>
 
                                       21

Section 7(e) hereof, shall thereafter have the right to receive, upon the
exercise thereof at the then current Purchase Price, such number of validly
authorized and issued, fully paid and non-assessable shares of Common Stock of
the Principal Party (as such term is hereinafter defined), which shares shall
not be subject to any liens, encumbrances, rights of first refusal, transfer
restrictions or other adverse claims, as shall be equal to the result obtained
by (1) multiplying the then current Purchase Price by the number of Units of
Preferred Stock for which a Right is exercisable immediately prior to the first
occurrence of a Section 13 Event (or, if a Section 11(a)(ii) Event has occurred
prior to the first occurrence of a Section 13 Event, multiplying the number of
such Units for which a Right would be exercisable hereunder but for the
occurrence of such Section 11(a)(ii) Event by the Purchase Price which would be
in effect hereunder but for such first occurrence) and (2) dividing that product
(which, following the first occurrence of a Section 13 Event, shall be the
"Purchase Price" for all purposes of this Agreement) by 50% of the current
market price (determined pursuant to Section 11(d) hereof) per share of the
Common Stock of such Principal Party on the date of consummation of such Section
13 Event; (ii) such Principal Party shall thereafter be liable for, and shall
assume, by virtue of such Section 13 Event, all the obligations and duties of
the Company pursuant to this Agreement; (iii) the term "Company" shall
thereafter be deemed to refer to such Principal Party, it being specifically
intended that the provisions of Section 11 hereof shall apply only to such
Principal Party following the first occurrence of a Section 13 Event; (iv) such
Principal Party shall take such steps (including, but not limited to, the
reservation of a sufficient number of shares of its Common Stock) in connection
with the consummation of any such transaction as may be necessary to ensure that
the provisions of this Agreement shall thereafter be applicable to its shares of
Common Stock thereafter deliverable upon the exercise of the Rights; and (v) the
provisions of Section 11(a)(ii) hereof shall be of no further effect following
the first occurrence of any Section 13 Event.

           (b)  "Principal Party" shall mean:
                 ---------------             

               (i)  in the case of any transaction described in clause (x) or
           (y) of the first sentence of Section 13(a), (A) the Person that is
           the issuer of any securities into which shares of Company Common
           Stock are converted in such merger or consolidation, or, if there is
           more than one such issuer, the issuer of Common Stock that has the
           highest aggregate current market price (determined pursuant to
           Section 11(d) hereof) and (B) if no securities are so issued, the
           Person that is the other party to such merger or consolidation, or,
           if there is more than one such Person, the Person the Common Stock of
           which has the highest aggregate current market price (determined
           pursuant to Section 11(d) hereof); and

               (ii)  in the case of any transaction described in clause (z) of
           the first sentence of Section 13(a), the Person that is the party
           receiving the largest portion of the assets or earning power
           transferred pursuant to such transaction or transactions, or, if each
           Person that is a party to such transaction or transactions receives
           the same portion of the assets or earning power transferred pursuant
           to such transaction or transactions or if the Person receiving the
           largest portion of the assets or earning power cannot be determined,
           whichever Person the Common Stock of which has the highest aggregate
           current market price
<PAGE>
 
                                       22

           (determined pursuant to Section 11(d) hereof); provided, however,
                                                          --------  ------- 
           that in any such case, (1) if the Common Stock of such Person is not
           at such time and has not been continuously over the preceding twelve-
           month period registered under Section 12 of the Exchange Act
                                                                       
           ("Registered Common Stock"), or such Person is not a corporation, and
           -------------------------                                            
           such Person is a direct or indirect Subsidiary of another Person that
           has Registered Common Stock outstanding, "Principal Party" shall
           refer to such other Person; (2) if the Common Stock of such Person is
           not Registered Common Stock or such Person is not a corporation, and
           such Person is a direct or indirect Subsidiary of another Person but
           is not a direct or indirect Subsidiary of another Person which has
           Registered Common Stock outstanding, "Principal Party" shall refer to
           the ultimate parent entity of such first-mentioned Person; (3) if the
           Common Stock of such Person is not Registered Common Stock or such
           Person is not a corporation, and such Person is directly or
           indirectly controlled by more than one Person, and one or more of
           such other Persons has Registered Common Stock outstanding,
           "Principal Party" shall refer to whichever of such other Persons is
           the issuer of the Registered Common Stock having the highest
           aggregate current market price (determined pursuant to Section 11(d)
           hereof); and (4) if the Common Stock of such Person is not Registered
           Common Stock or such Person is not a corporation, and such Person is
           directly or indirectly controlled by more than one Person, and none
           of such other Persons have Registered Common Stock outstanding,
           "Principal Party" shall refer to whichever ultimate parent entity is
           the corporation having the greatest shareholders equity or, if no
           such ultimate parent entity is a corporation, shall refer to
           whichever ultimate parent entity is the entity having the greatest
           net assets.

          (c)  The Company shall not consummate any such consolidation, merger,
sale or transfer unless the Principal Party shall have a sufficient number of
authorized shares of its Common Stock which have not been issued or reserved for
issuance to permit the exercise in full of the Rights in accordance with this
Section 13, and unless prior thereto the Company and such Principal Party shall
have executed and delivered to the Rights Agent a supplemental agreement
providing for the terms set forth in paragraphs (a) and (b) of this Section l3
and further providing that the Principal Party will:

              (i)  (A) file on an appropriate form, as soon as practicable
           following the execution of such agreement, a registration statement
           under the Securities Act with respect to the Common Stock that may be
           acquired upon exercise of the Rights, (B) cause such registration
           statement to remain effective (and to include a prospectus complying
           with the requirements of the Securities Act) until the Expiration
           Date, and (C) as soon as practicable following the execution of such
           agreement, take such action as may be required to ensure that any
           acquisition of such Common Stock upon the exercise of the Rights
           complies with any applicable state security or "blue sky" laws; and
<PAGE>
 
                                       23

             (ii)  deliver to holders of the Rights historical financial
           statements for the Principal Party and each of its Affiliates which
           comply in all respects with the requirements for registration on Form
           10 under the Exchange Act.

          (d)  In case the Principal Party which is to be a party to a
transaction referred to in this Section 13 has a provision in any of its
authorized securities or in its Certificate of Incorporation or By-laws or other
instrument governing its corporate affairs, which provision would have the
effect of (i) causing such Principal Party to issue, in connection with, or as a
consequence of, the consummation of a transaction referred to in this Section
13, shares of Common Stock of such Principal Party at less than the then current
market price per share (determined pursuant to Section 11(d) hereof) or
securities exercisable for, or convertible into, Common Stock of such Principal
Party at less than such then current market price (other than to holders of
Rights pursuant to this Section 13) or (ii) providing for any special payment,
tax or similar provisions in connection with the issuance of the Common Stock of
such Principal Party pursuant to the provisions of this Section 13; then, in
such event, the Company shall not consummate any such transaction unless prior
thereto the Company and such Principal Party shall have executed and delivered
to the Rights Agent a supplemental agreement providing that the provision in
question of such Principal Party shall have been cancelled, waived or amended,
or that the authorized securities shall be redeemed, so that the applicable
provision will have no effect in connection with, or as a consequence of, the
consummation of the proposed transaction.

          (e)  The provisions of this Section 13 shall similarly apply to
successive mergers or consolidations or sales or other transfers.  In the event
that a Section 13 Event shall occur at any time after the occurrence of a
Section 11(a)(ii) Event, the Rights which have not theretofore been exercised
shall thereafter become exercisable in the manner described in Section 13(a).

          SECTION 14.  Fractional Rights and Fractional Shares.  (a)  The
                       ---------------------------------------           
Company shall not be required to issue fractions of Rights or to distribute
Rights Certificates which evidence fractional Rights.  In lieu of such
fractional Rights, there shall be paid to the Persons to which such fractional
Rights would otherwise be issuable, an amount in cash equal to such fraction of
the market value of a whole Right.  For purposes of this Section l4(a), the
market value of a whole Right shall be the closing price of the Rights for the
Trading Day immediately prior to the date on which such fractional Rights would
have been otherwise issuable.  The closing price of the Rights for any day shall
be, if the Rights are listed or admitted to trading on a national securities
exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national securities exchange
on which the Rights are listed or admitted to trading or, if the Rights are not
listed or admitted to trading on any national securities exchange, the last
quoted price or, if not so quoted, the average of the high bid and low asked
prices in the over-the-counter market, as reported by Nasdaq or such other
system then in use or, if on any such date the Rights are not quoted by any such
organization, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Rights selected by a majority
of the Independent Directors.  If on any such date no such market maker is
making a market in the Rights, the fair value of the Rights on such date as
determined in good faith by a majority of the Independent
<PAGE>
 
                                       24

Directors shall be used and such determination shall be described in a statement
filed with the Rights Agent and the holders of the Rights.

          (b)  The Company shall not be required to issue fractions of shares of
Preferred Stock (other than fractions which are integral multiples of one one-
thousandth of a share of Preferred Stock) upon exercise of the Rights or to
distribute certificates which evidence such fractional shares of Preferred Stock
(other than fractions which are integral multiples of one one-thousandth of a
share of Preferred Stock).  In lieu of such fractional shares of Preferred Stock
that are not integral multiples of one one-thousandth of a share, the Company
may pay to the registered holders of Rights Certificates at the time such Rights
are exercised as herein provided an amount in cash equal to the same fraction of
the then current market price of a share of Preferred Stock on the day of
exercise, determined in accordance with Section 11(d) hereof.

          (c)  The holder of a Right by the acceptance of the Rights expressly
waives his right to receive any fractional Rights or any fractional shares upon
exercise of a Right, except as permitted by this Section 14.

          SECTION 15.  Rights of Action.  All rights of action in respect of
                       ----------------                                     
this Agreement, other than rights of action vested in the Rights Agent pursuant
to Section 18 hereof, are vested in the respective registered holders of the
Rights Certificates (and, prior to the Distribution Date, the registered holders
of certificates representing shares of Company Common Stock); and any registered
holder of a Rights Certificate (or, prior to the Distribution Date, of a
certificate representing shares of Company Common Stock), without the consent of
the Rights Agent or of the holder of any other Rights Certificate (or, prior to
the Distribution Date, of a certificate representing shares of Company Common
Stock), may, in his own behalf and for his own benefit, enforce, and may
institute and maintain any suit, action or proceeding against the Company or any
other Person to enforce, or otherwise act in respect of, his right to exercise
the Rights evidenced by such Rights Certificate in the manner provided in such
Rights Certificate and in this Agreement.  Without limiting the foregoing or any
remedies available to the holders of Rights, it is specifically acknowledged
that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and shall be entitled to specific performance of the
obligations hereunder and injunctive relief against actual or threatened
violations of the obligations hereunder of any Person subject to this Agreement.

          SECTION 16.  Agreement of Rights Holders.  Every holder of a Right by
                       ---------------------------                             
accepting the same consents and agrees with the Company and the Rights Agent and
with every other holder of a Right that:

           (a)  prior to the Distribution Date, the Rights will be transferable
     only in connection with the transfer of Company Common Stock;

           (b)  after the Distribution Date, the Rights Certificates are
     transferable only on the registry books of the Rights Agent if surrendered
     at the office of the Rights Agent designated for such purposes, duly
     endorsed or accompanied by a proper instrument of transfer and with the
     appropriate forms and certificates duly executed;
<PAGE>
 
                                       25

           (c)  subject to Section 6(a) and Section 7(f) hereof, the Company and
     the Rights Agent may deem and treat the person in whose name a Rights
     Certificate (or, prior to the Distribution Date, the associated Company
     Common Stock certificate) is registered as the absolute owner thereof and
     of the Rights evidenced thereby (notwithstanding any notations of ownership
     or writing on the Rights Certificates or the associated Company Common
     Stock certificate made by anyone other than the Company or the Rights
     Agent) for all purposes whatsoever, and neither the Company nor the Rights
     Agent, subject to the last sentence of Section 7(e) hereof, shall be
     affected by any notice to the contrary; and

           (d)  notwithstanding anything in this Agreement to the contrary,
     neither the Company nor the Rights Agent shall have any liability to any
     holder of a Right or any other Person as a result of its inability to
     perform any of its obligations under this Agreement by reason of any
     preliminary or permanent injunction or other order, decree or ruling issued
     by a court of competent jurisdiction or by a governmental, regulatory or
     administrative agency or commission, or any statute, rule, regulation or
     executive order promulgated or enacted by any governmental authority,
     prohibiting or otherwise restraining performance of such obligation;
                                                                         
     provided, however, the Company must use its best efforts to have any such
     --------  -------                                                        
     order, decree or ruling lifted or otherwise overturned as promptly as
     practicable.

          SECTION 17.  Rights Certificate Holder Not Deemed a Stockholder.  No
                       --------------------------------------------------     
holder, as such, of any Rights Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the number of shares of
Preferred Stock or any other securities of the Company which may at any time be
issuable on the exercise of the Rights represented thereby, nor shall anything
contained herein or in any Rights Certificate be construed to confer upon the
holder of any Rights Certificate, as such, any of the rights of a stockholder of
the Company or any right to vote for the election of directors or upon any
matter submitted to stockholders at any meeting thereof, or to give or withhold
consent to any corporate action, or, except as provided in Section 24 hereof, to
receive notice of meetings or other actions affecting stockholders, or to
receive dividends or subscription rights, or otherwise, until the Right or
Rights evidenced by such Rights Certificate shall have been exercised in
accordance with the provisions hereof.

          SECTION 18.  Concerning the Rights Agent.  (a)  The Company agrees to
                       ---------------------------                             
pay to the Rights Agent reasonable compensation for all services rendered by it
hereunder and, from time to time, on demand of the Rights Agent, its reasonable
expenses, including reasonable fees and disbursements of its counsel, incurred
in connection with the execution and administration of this Agreement and the
exercise and performance of its duties hereunder.  The Company shall indemnify
the Rights Agent for, and hold it harmless against, any loss, liability, or
expense, incurred without negligence, bad faith or willful misconduct on the
part of the Rights Agent, for anything done or omitted by the Rights Agent in
connection with the acceptance and administration of this Agreement, including
the costs and expenses of defending against any claim of liability hereunder.
<PAGE>
 
                                       26

          (b)  The Rights Agent shall be protected and shall incur no liability
for or in respect of any action taken, suffered or omitted by it in connection
with its administration of this Agreement in reliance upon any Rights
Certificate or certificate for Preferred Stock or for other securities of the
Company, instrument of assignment or transfer, power of attorney, endorsement,
affidavit, letter, notice, direction, consent, certificate, statement or other
paper or document believed by it to be genuine and to have been signed, executed
and, where necessary, verified or acknowledged by the proper Person or Persons.
Anything in this Agreement to the contrary notwithstanding, in no event shall 
the Rights Agent be liable for special, indirect or consequential loss or damage
of any kind whatsoever (including but not limited to lost profits), even if the 
Rights Agent has been advised of the likelihood of such loss or damage and 
regardless of the form of the action.

          SECTION 19.  Merger or Consolidation or Change of Name of Rights
                       ---------------------------------------------------
Agent.  (a)  Any corporation into which the Rights Agent or any successor Rights
- - -----
Agent may be merged or with which it may be consolidated, or any corporation
resulting from any merger or consolidation to which the Rights Agent or any
successor Rights Agent shall be a party, or any corporation succeeding to the
corporate trust or shareholder services businesses of the Rights Agent or any
successor Rights Agent, shall be the successor to the Rights Agent under this
Agreement without the execution or filing of any document or any further act on
the part of any of the parties hereto; provided, however, that such corporation
                                       --------  -------                       
would be eligible for appointment as a successor Rights Agent under the
provisions of Section 21 hereof.  In case at the time such successor Rights
Agent shall succeed to the agency created by this Agreement, any of the Rights
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of a predecessor Rights Agent and
deliver such Rights Certificates so countersigned; and in case at that time any
of the Rights Certificates shall not have been countersigned, any successor
Rights Agent may countersign such Rights Certificates either in the name of the
predecessor or in the name of the successor Rights Agent; and in all such cases
such Rights Certificates shall have the full force provided in the Rights
Certificates and in this Agreement.

          (b)  In case at any time the name of the Rights Agent shall be changed
and at such time any of the Rights Certificates shall have been countersigned
but not delivered, the Rights Agent may adopt the countersignature under its
prior name and deliver Rights Certificates so countersigned; and in case at that
time any of the Rights Certificates shall not have been countersigned, the
Rights Agent may countersign such Rights Certificates either in its prior name
or in its changed name; and in all such cases such Rights Certificates shall
have the full force provided in the Rights Certificates and in this Agreement.

          SECTION 20.  Duties of Rights Agent.  The Rights Agent undertakes the
                       ----------------------                                  
duties and obligations imposed by this Agreement upon the following terms and
conditions, by all of which the Company and the holders of Rights Certificates,
by their acceptance thereof, shall be bound:

           (a)  The Rights Agent may consult with legal counsel (who may be
     legal counsel for the Company), and the opinion of such counsel shall be
     full and complete authorization and protection to the Rights Agent as to
     any action taken or omitted by it in good faith and in accordance with such
     opinion.

           (b)  Whenever in the performance of its duties under this Agreement
     the Rights Agent shall deem it necessary or desirable that any fact or
     matter (including, without
<PAGE>
 
                                       27

     limitation, the identity of any Acquiring Person and the determination of
     "current market price") be proved or established by the Company prior to
     taking or suffering any action hereunder, such fact or matter (unless other
     evidence in respect thereof be specified herein) may be deemed to be
     conclusively proved and established by a certificate signed by the Chairman
     of the Board, the President, any Vice President, the Treasurer, any
     Assistant Treasurer, the Secretary or any Assistant Secretary of the
     Company and delivered to the Rights Agent; provided, however, that so long
                                                --------  -------              
     as any Person is an Acquiring Person hereunder, such certificate shall be
     signed and delivered by a majority of the Independent Directors; and such
     certificate shall be full authorization to the Rights Agent for any action
     taken or suffered in good faith by it under the provisions of this
     Agreement in reliance upon such certificate.

           (c)  The Rights Agent shall be liable hereunder only for its own
     negligence, bad faith or willful misconduct.

           (d)  The Rights Agent shall not be liable for or by reason of any of
     the statements of fact or recitals contained in this Agreement or in the
     Rights Certificates or be required to verify the same (except as to its
     countersignature on such Rights Certificates), but all such statements and
     recitals are and shall be deemed to have been made by the Company only.

           (e)  The Rights Agent shall not have any responsibility for the
     validity of this Agreement or the execution and delivery hereof (except the
     due execution hereof by the Rights Agent) or for the validity or execution
     of any Rights Certificate (except its countersignature thereof); nor shall
     it be responsible for any breach by the Company of any covenant or failure
     by the Company to satisfy conditions contained in this Agreement or in any
     Rights Certificate; nor shall it be responsible for any adjustment required
     under the provisions of Section 11 or Section 13 hereof or for the manner,
     method or amount of any such adjustment or the ascertaining of the
     existence of facts that would require any such adjustment (except with
     respect to the exercise of Rights evidenced by Rights Certificates after
     receipt by the Rights Agent of the certificate describing any such
     adjustment contemplated by Section 12); nor shall it by any act hereunder
     be deemed to make any representation or warranty as to the authorization or
     reservation of any shares of Preferred Stock or any other securities to be
     issued pursuant to this Agreement or any Rights Certificate or as to
     whether any shares of Preferred Stock or any other securities will, when so
     issued, be validly authorized and issued, fully paid and non-assessable.

           (f)  The Company shall perform, execute, acknowledge and deliver or
     cause to be performed, executed, acknowledged and delivered all such
     further acts, instruments and assurances as may reasonably be required by
     the Rights Agent for the performance by the Rights Agent of its duties
     under this Agreement.

           (g)  The Rights Agent is hereby authorized and directed to accept
     instructions with respect to the performance of its duties hereunder from
     the Chairman of the Board, the President, any Vice President, the
     Secretary, any Assistant Secretary, the Treasurer or any Assistant
     Treasurer of the Company, and to apply to such officers for advice or
<PAGE>
 
                                       28

     instructions in connection with its duties, and it shall not be liable for
     any action taken or suffered to be taken by it in good faith in accordance
     with instructions of any such officer; provided, however, that so long as
                                            --------  -------                 
     any Person is an Acquiring Person hereunder, the Rights Agent shall accept
     such instructions and advice only from a majority of the Independent
     Directors and shall not be liable for any action taken or suffered to be
     taken by it in good faith in accordance with such instructions of the
     majority of the Independent Directors.  Any application by the Rights Agent
     for written instructions from the Company may, at the option of the Rights
     Agent, set forth in writing any action proposed to be taken or omitted by
     the Rights Agent under this Rights Agreement and the date on and/or after
     which such action shall be taken or such omission shall be effective.  The
     Rights Agent shall not be liable for any action taken by, or omission of,
     the Rights Agent in accordance with a proposal included in any such
     application on or after the date specified in such application (which date
     shall not be less than five Business Days after the date any such officer
     of the Company actually receives such application, unless any such officer
     shall have consented in writing to an earlier date) unless, prior to taking
     any such action (or the effective date in the case of an omission), the
     Rights Agent shall have received written instructions in response to such
     application specifying the action to be taken or omitted.

           (h)  The Rights Agent and any shareholder, director, officer or
     employee of the Rights Agent may buy, sell or deal in any of the Rights or
     other securities of the Company or become pecuniarily interested in any
     transaction in which the Company may be interested, or contract with or
     lend money to the Company or otherwise act as fully and freely as though it
     were not Rights Agent under this Agreement.  Nothing herein shall preclude
     the Rights Agent from acting in any other capacity for the Company or for
     any other legal entity.

           (i)  The Rights Agent may execute and exercise any of the rights or
     powers hereby vested in it or perform any duty hereunder either itself or
     by or through its attorneys or agents.

           (j)  No provision of this Agreement shall require the Rights Agent to
     expend or risk its own funds or otherwise incur any financial liability in
     the performance of any of its duties or in the exercise of its rights
     hereunder if the Rights Agent shall have reasonable grounds for believing
     that repayment of such funds or adequate indemnification against such risk
     or liability is not reasonably assured to it.

           (k)  If, with respect to any Rights Certificate surrendered to the
     Rights Agent for exercise or transfer, the certificate attached to the form
     of assignment or form of election to purchase, as the case may be, has
     either not been completed, not signed or indicates an affirmative response
     to clause 1 and/or 2 thereof, the Rights Agent shall not take any further
     action with respect to such requested exercise or transfer without first
     consulting with the Company.  If such certificate has been completed and
     signed and shows a negative response to clauses 1 and 2 of such
     certificate, unless previously instructed otherwise in writing by the
     Company (which instructions may impose on the Rights Agent additional
     ministerial responsibilities, but no discretionary responsibilities),
<PAGE>
 
                                       29

     the Rights Agent may assume without further inquiry that the Rights
     Certificate is not owned by a person described in Section 4(b) or Section
     7(e) hereof and shall not be charged with any knowledge to the contrary.

          SECTION 21.  Change of Rights Agent.  The Rights Agent or any
                       ----------------------                          
successor Rights Agent may resign and be discharged from its duties under this
Agreement upon thirty days' prior notice in writing mailed to the Company, and
to each transfer agent of the Preferred Stock and the Company Common Stock, by
registered or certified mail, and to the holders of the Rights Certificates by
first-class mail.  The Company may remove the Rights Agent or any successor
Rights Agent upon thirty days' prior notice in writing, mailed to the Rights
Agent or successor Rights Agent, as the case may be, and to each transfer agent
of the Preferred Stock and the Company Common Stock, by registered or certified
mail, and to the holders of the Rights Certificates by first-class mail.  If the
Rights Agent shall resign or be removed or shall otherwise become incapable of
acting, the Company shall appoint a successor to the Rights Agent.  If the
Company shall fail to make such appointment within a period of thirty days after
giving notice of such removal or after it has been notified in writing of such
resignation or incapacity by the resigning or incapacitated Rights Agent or by
the holder of a Rights Certificate (who shall, with such notice, submit his
Rights Certificate for inspection by the Company), then any registered holder of
any Rights Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent.  Any successor Rights Agent, whether
appointed by the Company or by such a court, shall be (a) a corporation
organized and doing business under the laws of the United States or any state of
the United States in good standing, shall be authorized to do business as a
banking institution in the State of New York, shall be authorized under such
laws to exercise corporate trust or stock transfer powers, shall be subject to
supervision or examination by federal or state authorities and shall have at the
time of its appointment as Rights Agent a combined capital and surplus of at
least $100,000,000 or (b) an Affiliate of a corporation described in clause (a).
After appointment, the successor Rights Agent shall be vested with the same
powers, rights, duties and responsibilities as if it had been originally named
as Rights Agent without further act or deed; but the predecessor Rights Agent
shall deliver and transfer to the successor Rights Agent any property at the
time held by it hereunder, and execute and deliver any further assurance,
conveyance, act or deed necessary for the purpose.  Not later than the effective
date of any such appointment, the Company shall file notice thereof in writing
with the predecessor Rights Agent and each transfer agent of the Preferred Stock
and the Company Common Stock, and mail a notice thereof in writing to the
registered holders of the Rights Certificates.  Failure to give any notice
provided for in this Section 21, however, or any defect therein, shall not
affect the legality or validity of the resignation or removal of the Rights
Agent or the appointment of the successor Rights Agent.

          SECTION 22.  Issuance of New Rights Certificates.  Notwithstanding any
                       -----------------------------------                      
of the provisions of this Agreement or the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by a majority of the Independent Directors to reflect any
adjustment or change made in accordance with the provisions of this Agreement in
the Purchase Price or the number or kind or class of shares or other securities
or property that may be acquired under the Rights Certificates.  In addition, in
connection with the issuance or sale of shares of Company Common Stock following
the Distribution Date and prior to the Expiration Date, the Company (a) shall,
with respect to shares
<PAGE>
 
                                       30

of Company Common Stock so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement, or upon the exercise,
conversion or exchange of securities hereinafter issued by the Company, and (b)
may, in any other case, if deemed necessary or appropriate by a majority of the
Independent Directors, issue Rights Certificates representing the appropriate
number of Rights in connection with such issuance or sale; provided, however,
                                                           --------  ------- 
that (i) no such Rights Certificate shall be issued if, and to the extent that,
the Company shall be advised by counsel that such issuance would create a
significant risk of material adverse tax consequences to the Company or the
person to whom such Rights Certificate would be issued, and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.

          SECTION 23.  Redemption and Termination.  (a)  Subject to Section 30
                       --------------------------                             
hereof, the Company may, at its option, by action of a majority of the
Independent Directors, at any time prior to the earlier of (i) the Close of
Business on the tenth Business Day following the Stock Acquisition Date or (ii)
the Final Expiration Date, redeem all but not less than all of the then
outstanding Rights at a redemption price of $.01 per Right, as such amount may
be appropriately adjusted to reflect any stock split, stock dividend or similar
transaction occurring after the date hereof (such redemption price being the
                                                                            
"Redemption Price"), and the Company may, at its option, by action of a majority
- - -----------------                                                               
of the Independent Directors, pay the Redemption Price either in shares of
Company Common Stock (based on the "current market price", as defined in Section
11(d) hereof, of the shares of Company Common Stock at the time of redemption)
or cash.

          (b)  Immediately upon the action of a majority of the Independent
Directors ordering the redemption of the Rights, evidence of which shall be
filed with the Rights Agent, and without any further action and without any
notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price for
each Right so held.  Promptly after the action of a majority of the Independent
Directors ordering the redemption of the Rights, the Company shall give notice
of such redemption to the Rights Agent and the holders of the then outstanding
Rights by mailing such notice to all such holders at each holder's last address
as it appears upon the registry books of the Rights Agent or, prior to the
Distribution Date, on the registry books of the transfer agent for Company
Common Stock.  Any notice which is mailed in the manner herein provided shall be
deemed given, whether or not the holder receives the notice.  Each such notice
of redemption will state the method by which the payment of the Redemption Price
will be made.

          SECTION 24.  Notice of Certain Events.  (a)  In case the Company shall
                       ------------------------                                 
propose, at any time after the Distribution Date, (i) to pay any dividend
payable in stock of any class to the holders of Preferred Stock or to make any
other distribution to the holders of Preferred Stock (other than a regular
quarterly cash dividend paid out of funds legally available therefor), (ii) to
offer to the holders of Preferred Stock rights or warrants to subscribe for or
to purchase any additional shares of Preferred Stock or shares of stock of any
class or any other securities, rights or options, (iii) to effect any
reclassification of its Preferred Stock (other than a reclassification involving
only the subdivision of outstanding shares of Preferred Stock), (iv) to effect
any consolidation or merger into or with any other Person (other than a
Subsidiary of the Company in a transaction which complies with Section 11(o)
hereof), or to effect any sale
<PAGE>
 
                                       31

or other transfer (or to permit one or more of its Subsidiaries to effect any
sale or other transfer), in one or more transactions, of more than 50% of the
assets or earning power of the Company and its Subsidiaries (taken as a whole)
to any other Person or Persons (other than the Company and/or any of its
Subsidiaries in one or more transactions each of which complies with Section
11(o) hereof), or (v) to effect the liquidation, dissolution or winding up of
the Company, then, in each such case, the Company shall give to each holder of a
Rights Certificate, to the extent feasible and in accordance with Section 25
hereof, a notice of such proposed action, which shall specify the record date
for the purposes of such stock dividend, distribution of rights or warrants, or
the date on which such reclassification, consolidation, merger, sale, transfer,
liquidation, dissolution, or winding up is to take place and the date of
participation therein by the holders of the shares of Preferred Stock, if any
such date is to be fixed, and such notice shall be so given in the case of any
action covered by clause (i) or (ii) above at least twenty (20) days prior to
the record date for determining holders of the shares of Preferred Stock for
purposes of such action, and in the case of any such other action, at least
twenty (20) days prior to the date of the taking of such proposed action or the
date of participation therein by the holders of the shares of Preferred Stock
whichever shall be the earlier; provided, however, no such notice shall be
                                --------  -------                         
required pursuant to this Section 24, if any Subsidiary of the Company effects a
consolidation or merger with or into, or effects a sale or other transfer of
assets or earnings power to, any other Subsidiary of the Company.

          (b)  In case any Section 11(a)(ii) Event hereof shall occur, then, in
any such case, (i) the Company shall as soon as practicable thereafter give to
each holder of a Rights Certificate, to the extent feasible and in accordance
with Section 25 hereof, a notice of the occurrence of such event, which shall
specify the event and the consequences of the event to holders of Rights under
Section 11(a)(ii) hereof.

          SECTION 25.  Notices.  All notices and other communications provided
                       -------                                                
for hereunder shall, unless otherwise stated herein, be in writing (including by
telex, telegram or cable) and mailed or sent or delivered, if to the Company, at
its address at:

         Magma Power Company
         4365 Executive Drive, Suite 900
         San Diego, California  92121
         Attention:  President
         Fax:  (619) 622-7822
<PAGE>
 
                                       32

and if to the Rights Agent, at its address at:

         Chemical Trust Company of California
         300 South Grand Avenue, Fourth Floor
         Los Angeles, CA 90071
         Attention: Mr. Ian Gass
         Fax: (213) 617-9046


Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Rights Certificate (or, if
prior to the Distribution Date, to the holder of certificates representing
shares of Company Common Stock) shall be sufficiently given or made if sent by
first-class mail, postage prepaid, addressed to such holder at the address of
such holder as shown on the registry books of the Company.

         SECTION 26.  Supplements and Amendments.  Prior to the Distribution
                      --------------------------                            
Date and subject to the penultimate sentence of this Section 26, the Company and
the Rights Agent shall, if the Company so directs, supplement or amend any
provision of this Agreement without the approval of any holders of certificates
representing shares of Company Common Stock.  From and after the Distribution
Date and subject to the penultimate sentence of this Section 26, the Company and
the Rights Agent shall, if the Company so directs, supplement or amend this
Agreement without the approval of any holders of Rights Certificates in order
(i) to cure any ambiguity, (ii) to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provisions herein,
(iii) to shorten or lengthen any time period hereunder, or (iv) to change or
supplement the provisions hereunder in any manner which the Company may deem
necessary or desirable and which shall not adversely affect the interests of the
holders of Rights Certificates (other than an Acquiring Person or an Affiliate
or Associate of an Acquiring Person); provided, however, that this Agreement may
                                      --------  -------                         
not be supplemented or amended to lengthen, pursuant to clause (iii) of this
sentence, (A) subject to Section 30 hereof, a time period relating to when the
Rights may be redeemed at such time as the Rights are not then redeemable, or
(B) any other time period unless such lengthening is for the purpose of
protecting, enhancing or clarifying the rights of, and/or the benefits to, the
holders of Rights.  Upon the delivery of a certificate from an appropriate
officer of the Company or, so long as any Person is an Acquiring Person
hereunder, from the majority of the Independent Directors which states that the
proposed supplement or amendment is in compliance with the terms of this Section
26, the Rights Agent shall execute such supplement or amendment.
Notwithstanding anything contained in this Agreement to the contrary, no
supplement or amendment shall be made which changes the Redemption Price, the
Purchase Price, the Expiration Date or the number of Units of Preferred Stock
for which a Right is exercisable without the approval of a majority of the
Independent Directors.  Prior to the Distribution Date, the interests of the
holders of Rights shall be deemed coincident with the interests of the holders
of Company Common Stock.

         SECTION 27.  Successors.  All the covenants and provisions of this
                      ----------                                           
Agreement by or for the benefit of the Company or the Rights Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.
<PAGE>
 
                                       33

         SECTION 28.  Determinations and Actions by the Board of Directors, etc.
                      ----------------------------------------------------------
For all purposes of this Agreement, any calculation of the number of shares of
Company Common Stock outstanding at any particular time, including for purposes
of determining the particular percentage of such outstanding shares of Company
Common Stock of which any Person is the Beneficial Owner, shall be made in
accordance with the last sentence of Rule 13d-3(d)(1)(i) of the Exchange Act
Regulations as in effect on the date hereof.  Except as otherwise specifically
provided herein, the Board of Directors of the Company shall have the exclusive
power and authority to administer this Agreement and to exercise all rights and
powers specifically granted to the Board or to the Company, or as may be
necessary or advisable in the administration of this Agreement, including,
without limitation, the right and power (i) to interpret the provisions of this
Agreement, and (ii) to make all determinations deemed necessary or advisable for
the administration of this Agreement.  All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board
or by a majority of the Independent Directors in good faith shall (x) be final,
conclusive and binding on the Company, the Rights Agent, the holders of the
Rights and all other parties, and (y) not subject the Board or any member
thereof to any liability to the holders of the Rights.

         SECTION 29.  Benefits of this Agreement.  Nothing in this Agreement
                      --------------------------                            
shall be construed to give to any Person other than the Company, the Rights
Agent and the registered holders of the Rights Certificates (and, prior to the
Distribution Date, registered holders of shares of Company Common Stock) any
legal or equitable right, remedy or claim under this Agreement; but this
Agreement shall be for the sole and exclusive benefit of the Company, the Rights
Agent and the registered holders of the Rights Certificates (and, prior to the
Distribution Date, registered holders of shares of Company Common Stock).

         SECTION 30.  Severability.  If any term, provision, covenant or
                      ------------                                      
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
                                                                               
provided, however, that notwithstanding anything in this Agreement to the
- - --------  -------                                                        
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and a majority of the
Independent Directors determines in its good faith judgment that severing the
invalid language from this Agreement would adversely affect the purpose or
effect of this Agreement and the Rights shall not then be redeemable, the right
of redemption set forth in Section 23 hereof shall be reinstated and shall not
expire until the Close of Business on the tenth Business Day following the date
of such determination by a majority of the Independent Directors.

         SECTION 31.  Governing Law.  This Agreement, each Right and each Rights
                      -------------                                             
Certificate issued hereunder shall be governed by, and construed in accordance
with, the laws of the State of Nevada applicable to contracts executed in and to
be performed entirely in such State; provided, however, that Sections 18, 19,
                                     --------  -------                       
20 and 21 hereof shall be governed by, and construed in accordance with, the
laws of the State of California.
<PAGE>
 
                                       34

         SECTION 32.  Counterparts.  This Agreement may be executed (including
                      ------------                                            
by facsimile) in one or more counterparts, and by the different parties hereto
in separate counterparts, each of which when executed shall be deemed to be an
original, but all of which taken together shall constitute one and the same
instrument.

         SECTION 33.  Descriptive Headings.  The headings contained in this
                      --------------------                                 
Agreement are for descriptive purposes only and shall not affect in any way the
meaning or interpretation of this Agreement.

         SECTION 34.  Exchange.  (a)  The Company may at any time prior to the
                      --------                                                
Distribution Date, upon resolution of a majority of the Independent Directors,
exchange all or part of the then outstanding and exerciseable Rights (which
shall not include Rights that have become void pursuant to Section 7(e) hereof)
for Units of Preferred Stock at an exchange ratio specified in the following
sentence, as appropriately adjusted to reflect any stock split, stock dividend
or similar transaction occurring after the date hereof.  Subject to such
adjustment, each Right may be exchanged for that number of Units of Preferred
Stock obtained by dividing the Adjustment Spread (as defined below) by the then
current market price (determined pursuant to Section 11(d) hereof) per Unit of
Preferred Stock on the earlier of (i) the date on which any Person becomes an
Acquiring Person and (ii) the date on which a tender or exchange offer by any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan maintained by the Company or any of its Subsidiaries or any trustee
or fiduciary with respect to such plan acting in such capacity) is first
published or sent or given within the meaning of Rule 14d-4(a) of the Exchange
Act Regulations or any successor rule, if upon consummation thereof such Person
would be the Beneficial Owner of 20% or more of the shares of Company Common
Stock then outstanding (such exchange ratio being the "Exchange Ratio").  The
                                                       --------------        
"Adjustment Spread" shall equal (x) the aggregate market price on the date of
- - ------------------                                                           
such event of the number of Adjustment Shares determined pursuant to Section
11(a)(ii), minus (y) the Purchase Price.

         (b)  Immediately upon the action of a majority of the Independent
Directors ordering the exchange of any Rights pursuant to Section 34(a) and
without any further action and without any notice, the right to exercise such
Rights shall terminate and the only right thereafter of a holder of such Rights
shall be to receive that number of Units of Preferred Stock equal to the number
of such Rights held by such holder multiplied by the Exchange Ratio.  The
Company shall promptly give public notice of any such exchange; provided,
                                                                -------- 
however, that the failure to give, or any defect in, such notice shall not
- - -------                                                                   
affect the validity of such exchange.  The Company promptly shall mail a notice
of any such exchange to all of the holders of such Rights at their last
addresses as they appear upon the registry books of the Rights Agent.  Any
notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice.  Each such notice of exchange
shall state the method by which the exchange of Units of Preferred Stock for
Rights will be effected and, in the event of any partial exchange, the number of
Rights which will be exchanged.  Any partial exchange shall be effected pro rata
based on the number of Rights (other than Rights which have become void pursuant
to the provisions of Section 7(e) hereof) held by each holder of Rights.
<PAGE>
 
                                       35

         (c)  In the event that the number of shares of Preferred Stock which
are authorized by the Company's Certificate of Incorpration but not outstanding
or reserved for issuance for purposes other than upon exercise of the Rights are
not sufficient to permit any exchange of Rights as contemplated in accordance
with this Section 34, the Company shall take all such action as may be necessary
to authorize additional shares of Preferred Stock for issuance upon exchange of
the Rights or make adequate provision to subsititute (1) cash, (2) Company
Common Stock or other equity securities of the Company, (3) debt securities of
the Company, (4) other assets, or (5) any combination of the foregoing, having
an aggregate value equal to the Adjustment Spread, where such aggregate value
has been determined by a majority of the Independent Directors.

         (d)  The Company shall not be required to issue fractions of Units of
Preferred Stock or to distribute certificates which evidence fractional Units.
In lieu of fractional Units, the Company may pay to the registered holders of
Rights Certificates at the time such Rights are exchanged as herein provided an
amount in cash equal to the same fraction of the current market price
(determined pursuant to Section 11(d) hereof) of one Unit of Preferred Stock.
<PAGE>
 
                                       36


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed, all as of the date first above written.

ATTEST:                                   MAGMA POWER COMPANY


       /s/ Jon R. Peele                          /s/ Paul M. Pankratz
By ________________________________       By ________________________________
   Name:   Jon R. Peele                      Name:   Paul M. Pankratz
   Title:  Secretary                         Title:  Chairman


ATTEST:                                   CHEMICAL TRUST COMPANY
                                          OF CALIFORNIA

       /s/ Ian D. Gass                           /s/ Sharon D. Magidson
By ________________________________       By __________________________________
   Name:   Ian D. Gas                        Name:   Sharon D. Magidson
   Title:  Assistant Vice President                  Title:   Vice President
<PAGE>
 
                                                                       EXHIBIT A
                                                                       ---------
                                                    [Form of Rights Certificate]


Certificate No.  ___________________ Rights


NOT EXERCISABLE AFTER THE EXPIRATION DATE (AS DEFINED IN THE RIGHTS AGREEMENT
REFERRED TO BELOW).  THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE
COMPANY, ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.  UNDER CERTAIN
CIRCUMSTANCES (SPECIFIED IN THE RIGHTS AGREEMENT), RIGHTS BENEFICIALLY OWNED BY
ACQUIRING PERSONS (AS DEFINED IN THE RIGHTS AGREEMENT) OR ANY SUBSEQUENT HOLDER
OF SUCH RIGHTS MAY BECOME NULL AND VOID.

                               Rights Certificate

                              MAGMA POWER COMPANY

         This certifies that _____________________, or registered assigns, is
the registered holder of the number of Rights set forth above, each of which
entitles the registered holder thereof, subject to the terms and conditions of
the Rights Agreement dated as of October 6, 1994 (the "Rights Agreement"; terms
                                                        ----------------        
defined therein are used herein with the same meaning unless otherwise defined
herein) between Magma Power Company, a Nevada corporation (the "Company"), and
                                                                -------       
Chemical Trust Company of California as Rights Agent (which term shall include
any successor Rights Agent under the Rights Agreement), to purchase from the
Company at any time after the Distribution Date and prior to the Expiration Date
at the office of the Rights Agent, one one-thousandth of a fully paid and non-
assessable share of Series A Preferred Stock, par value $.10 per share (the
                                                                           
"Preferred Stock"), of the Company at the Purchase Price initially of $125 per
- - ----------------                                                              
one one-thousandth share (each such one one-thousandth of a share being a
                                                                         
"Unit") of Preferred Stock, upon presentation and surrender of this Rights
 ----                                                                     
Certificate with the Election to Purchase and related certificate duly executed.
The number of Rights evidenced by this Rights Certificate (and the number of
Units which may be purchased upon exercise thereof) set forth above, and the
Purchase Price per Unit set forth above shall be subject to adjustment in
certain events as provided in the Rights Agreement.

         Upon the occurrence of a Section 11(a)(ii) Event, if the Rights
evidenced by this Rights Certificate are beneficially owned by an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person or, under
certain circumstances described in the Rights Agreement, a transferee of any
such Acquiring Person, Associate or Affiliate, such Rights shall become null and
void and no holder hereof shall have any right with respect to such Rights from
and after the occurrence of such Section 11(a)(ii) Event.

         In certain circumstances described in the Rights Agreement, the rights
evidenced hereby may entitle the registered holder thereof to purchase capital
stock of an entity other than
<PAGE>
 
                                       2


the Company or receive common stock, cash or other assets, all as provided in
the Rights Agreement.

         This Rights Certificate is subject to all of the terms and conditions
of the Rights Agreement, which terms and conditions are hereby incorporated
herein by reference and made a part hereof and to which Rights Agreement
reference is hereby made for a full description of the rights, limitations of
rights, obligations, duties and immunities hereunder of the Rights Agent, the
Company and the holders of the Rights Certificates.  Copies of the Rights
Agreement are on file at the principal office of the Company and are available
from the Company upon written request.

         This Rights Certificate, with or without other Rights Certificates,
upon surrender at the office of the Rights Agent designated for such purpose,
may be exchanged for another Rights Certificate or Rights Certificates of like
tenor and date evidencing an aggregate number of Rights equal to the aggregate
number of Rights evidenced by the Rights Certificate or Rights Certificates
surrendered.  If this Rights Certificate shall be exercised in part, the
registered holder shall be entitled to receive, upon surrender hereof, another
Rights Certificate or Rights Certificates for the number of whole Rights not
exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Certificate may be redeemed by the Company under certain circumstances
at its option at a redemption price of $.01 per Right, payable at the Company's
option in cash or in common stock of the Company, subject to adjustment in
certain events as provided in the Rights Agreement.

         No fractional shares of Preferred Stock will be issued upon the
exercise of any Right or Rights evidenced hereby (other than fractions which are
integral multiples of one one-thousandth of a share of Preferred Stock), but in
lieu thereof a cash payment will be made, as provided in the Rights Agreement.

         No holder of this Rights Certificate, as such, shall be entitled to
vote or receive dividends or be deemed for any purpose the holder of Preferred
Stock or of any other securities which may at any time be issuable on the
exercise hereof, nor shall anything contained in the Rights Agreement or herein
be construed to confer upon the holder hereof, as such, any of the rights of a
shareholder of the Company or any right to vote for the election of directors or
upon any matter submitted to shareholders at any meeting thereof, or to give or
withhold consent to any corporate action, or to receive notice of meetings or
other actions affecting shareholders (except as provided in the Rights
Agreement), or to receive dividends or subscription rights, or
<PAGE>
 
                                       3

otherwise, until the Rights evidenced by this Rights Certificate shall have been
exercised as provided in the Rights Agreement.

         This Rights Certificate shall not be valid or obligatory for any
purpose until it shall have been countersigned by the Rights Agent.

         WITNESS the facsimile signature of the proper officers of the Company.

Dated as of _______ __, 199_.


MAGMA POWER COMPANY


By __________________________________     By __________________________________
   Name:                                     Name:
   Title:                                    Title:


Countersigned:


CHEMICAL TRUST COMPANY OF CALIFORNIA, as
Rights Agent


By __________________________________
   Name:
   Title:
<PAGE>
 
                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT
                               ------------------


                  (To be executed by the registered holder if
                      such holder desires to transfer the
                              Rights Certificate.)



FOR VALUE RECEIVED --------------------------------------------------

hereby sells, assigns and transfers unto ----------------------

- - --------------------------------------------------------------------------------
(Please print name and address of transferee)

- - --------------------------------------------------------------------------------
this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably constitute and appoint ----------------- Attorney,
to transfer the within Rights Certificate on the books of the within-named
Company, with full power of substitution.


Dated: ____________ __, 199_



                                        ___________________________
                                        Signature


Signature Guaranteed:
<PAGE>
 
                                  Certificate
                                  -----------

         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1)  this Rights Certificate [  ] is [  ] is not being sold, assigned
and transferred by or on behalf of a Person who is or was an Acquiring Person or
an Affiliate or Associate of any such Acquiring Person (as such terms are
defined pursuant to the Rights Agreement); and

         (2)  after due inquiry and to the best knowledge of the undersigned, it
[  ] did [  ] did not acquire the Rights evidenced by this Rights Certificate
from any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of an Acquiring Person.


Dated: _____________ __, 199_           _____________________________
                                        Signature

Signature Guaranteed:

         --------------------------------------------------------------
                                     NOTICE
                                     ------

         The signature to the foregoing Assignment and Certificate must
correspond to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or any change whatsoever.

         Signatures must be guaranteed by an approved eligible financial
institution acceptable to the Rights Agent in its sole discretion or by a
participant in the Securities Transfer Agents Medallion Program, the Stock
Exchange Medallion Program or the New York Stock Exchange Medallion Program.

         In the event the certification set forth above is not completed, the
Company will deem the beneficial owner of the Rights evidenced by this Rights
Certificate to be an Acquiring Person or an Affiliate or Associate thereof (as
defined in the Rights Agreement) and, in the case of an Assignment, will affix a
legend to that effect on any Rights Certificates issued in exchange for this
Rights Certificate.
<PAGE>
 
                          FORM OF ELECTION TO PURCHASE
                          ----------------------------

                    (To be executed if the registered holder
                     desires to exercise Rights represented
                          by the Rights Certificate.)



To:  MAGMA POWER COMPANY

         The undersigned hereby irrevocably elects to exercise ------------
Rights represented by this Rights Certificate to purchase the Units of Preferred
Stock issuable upon the exercise of the Rights (or such other securities of the
Company or of any other person or other property which may be issuable upon the
exercise of the Rights) and requests that certificates for such Units be issued
in the name of and delivered to:

- - --------------------------------------------------------------------------------
(Please print name and address)

- - --------------------------------------------------------------------------------

Please insert social security
or other identifying number:  ------------------------------

         If such number of Rights shall not be all the Rights evidenced by this
Rights Certificate, a new Rights Certificate for the balance of such Rights
shall be registered in the name of and delivered to:

- - --------------------------------------------------------------------------------
(Please print name and address)

- - --------------------------------------------------------------------------------

Please insert social security
or other identifying number:  ----------------------------

Dated:  _________ __, 199_

                                        ____________________________
                                        Signature
Signature Guaranteed:
<PAGE>
 
                                  Certificate
                                  -----------

         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1)  the Rights evidenced by this Rights Certificate [  ] are [  ] are
not beneficially owned by an Acquiring Person or an Affiliate or an Associate
thereof (as defined in the Rights Agreement); and

         (2)  after due inquiry and to the best knowledge of the undersigned,
the undersigned [  ] did [  ] did not acquire the Rights evidenced by this
Rights Certificate from any person who is, was or subsequently became an
Acquiring Person or an Affiliate or Associate thereof.


Dated:  _________ __, 199_              ___________________________
                                        Signature
Signature Guaranteed:

         --------------------------------------------------------------

                                     NOTICE
                                     ------

         The signature in the foregoing Election to Purchase and Certificate
must conform to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or any change whatsoever.

         Signatures must be guaranteed by an approved eligible financial
institution acceptable to the Rights Agent in its sole discretion or by a
participant in the Securities Transfer Agents Medallion Program, the Stock
Exchange Medallion Program or the New York Stock Exchange Medallion Program.

         In the event the certification set forth above is not completed, the
Company will deem the beneficial owner of the Rights evidenced by this Rights
Certificate to be an Acquiring Person or an Affiliate or Associate thereof (as
defined in the Rights Agreement) and, in the case of an Assignment, will affix a
legend to that effect on any Rights Certificates issued in exchange for this
Rights Certificate.
<PAGE>
 
                                                                       EXHIBIT B
                                                                       ---------

                         SUMMARY OF RIGHTS TO PURCHASE
                                PREFERRED STOCK


     On October 3, 1994, the Board of Directors of Magma Power Company (the
                                                                           
"Company") declared a distribution of one Right for each outstanding share of
- - --------                                                                     
Common Stock, par value $.10 per share (the "Company Common Stock"), to
                                             --------------------      
stockholders of record at the close of business on October 14, 1994 (the "Record
                                                                          ------
Date") and for each share of Company Common Stock issued (including shares
- - ----                                                                      
distributed from Treasury) by the Company thereafter and prior to the
Distribution Date.  Each Right entitles the registered holder, subject to the
terms of the Rights Agreement (as defined below), to purchase from the Company
one one-thousandth of a share (a "Unit") of Series A Preferred Stock, par value
                                  ----                                         
$.10 per share (the "Preferred Stock"), at a Purchase Price of $125 per Unit,
                     ---------------                                         
subject to adjustment.  The Purchase Price is payable in cash or by certified or
bank check or money order payable to the order of the Company.  The description
and terms of the Rights are set forth in a Rights Agreement between the Company
and Chemical Trust Company of California as Rights Agent (the "Rights
                                                               ------
Agreement").

     Copies of the Rights Agreement and the Certificate of Designation for the
Preferred Stock have been filed with the Securities and Exchange Commission as
exhibits to a Registration Statement on Form 8-A dated October 7, 1994 (the
                                                                            
"Form 8-A").  Copies of the Rights Agreement and the Certificate of Designation
- - ---------                                                                      
are available free of charge from the Company.  This summary description of the
Rights and the Preferred Stock does not purport to be complete and is qualified
in its entirety by reference to all the provisions of the Rights Agreement and
the Certificate of Designation, including the definitions therein of certain
terms, which Rights Agreement and Certificate of Designation are incorporated
herein by reference.
<PAGE>
 
                                       2


The Rights Agreement
- - --------------------

     Initially, the Rights will attach to all certificates representing shares
of outstanding Company Common Stock, and no separate Rights Certificates will be
distributed.  The Rights will separate from the Company Common Stock and the
"Distribution Date" will occur upon the earlier of (i) 10 business days
following a public announcement (the date of such announcement being the "Stock
                                                                          -----
Acquisition Date") that a person or group of affiliated or associated persons
- - ----------------                                                             
(other than the Company, any subsidiary of the Company or any employee benefit
plan of the Company or such subsidiary) (an "Acquiring Person") has acquired,
                                             ----------------                
obtained the right to acquire, or otherwise obtained beneficial ownership of 10%
or more of the then outstanding shares of Company Common Stock (or if certain
current holders of 10% or more of the outstanding shares of Company Common Stock
have acquired, obtained the right to acquire or otherwise obtained beneficial
ownership of an additional 4% of the Company Common Stock), and (ii) 10 business
days (or such later date as may be determined by action of the Board of
Directors prior to such time as any person becomes an Acquiring Person)
following the commencement of a tender offer or exchange offer that would result
in a person or group beneficially owning 20% or more of the then outstanding
shares of Company Common Stock. Until the Distribution Date, (i) the Rights will
be evidenced by Company Common Stock certificates and will be transferred with
and only with such Company Common Stock certificates, (ii) new Company Common
Stock certificates issued after the Record Date (also including shares
distributed from Treasury) will contain a notation incorporating the Rights
Agreement by reference and (iii) the surrender for transfer of any certificates
representing outstanding Company Common Stock will also constitute the transfer
of the Rights associated with the Company Common Stock represented by such
certificates.

     The Rights are not exercisable until the Distribution Date and will expire
at the close of business on the tenth anniversary of the Rights Agreement unless
earlier redeemed by the Company as described below.

     As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to holders of record of Company Common Stock as of the close of
business on the Distribution Date and, thereafter, the separate Rights
Certificates alone will represent the Rights.

     In the event that (i) the Company is the surviving corporation in a merger
with an Acquiring Person and shares of Company Common Stock shall remain
outstanding, (ii) a Person becomes the beneficial owner of 10% or more of the
then outstanding shares of Company Common Stock (or an additional 4% in the case
of certain current 10% holders), (iii) an Acquiring Person engages in one or
more "self-dealing" transactions as set forth in the Rights Agreement, or (iv)
during such time as there is an Acquiring Person, an event occurs which results
in such Acquiring Person's ownership interest being increased by more than 1%
(e.g., by means of a reverse stock split or recapitalization), then, in each
 ----                                                          ----
such case, each holder of a Right will thereafter have the right to receive,
upon exercise, Units of Preferred Stock (or, in certain
<PAGE>
 
                                       3

circumstances, Company Common Stock, cash, property or other securities of the
Company) having a value equal to two times the exercise price of the Right.  The
exercise price is the Purchase Price multiplied by the number of Units of
Preferred Stock issuable upon exercise of a Right prior to the events described
in this paragraph.  Notwithstanding any of the foregoing, following the
occurrence of any of the events set forth in this paragraph, all Rights that
are, or (under certain circumstances specified in the Rights Agreement) were,
beneficially owned by any Acquiring Person will be null and void.

     In the event that, at any time following the Stock Acquisition Date, (i)
the Company is acquired in a merger or other business combination transaction
and the Company is not the surviving corporation (other than a merger described
in the preceding paragraph), (ii) any Person consolidates or merges with the
Company and all or part of the Company Common Stock is converted or exchanged
for securities, cash or property of any other Person or (iii) 50% or more of the
Company's assets or earning power is sold or transferred, each holder of a Right
(except Rights which previously have been voided as described above) shall
thereafter have the right to receive, upon exercise, common stock of the
Acquiring Person having a value equal to two times the exercise price of the
Right.

     The Purchase Price payable, and the number of Units of Preferred Stock
issuable, upon exercise of the Rights are subject to adjustment from time to
time to prevent dilution (i) in the event of a stock dividend on, or a
subdivision, combination or reclassification of, the Preferred Stock, (ii) if
holders of the Preferred Stock are granted certain rights or warrants to
subscribe for Preferred Stock or convertible securities at less than the current
market price of the Preferred Stock, or (iii) upon the distribution to the
holders of the Preferred Stock of evidences of indebtedness, cash or assets
(excluding regular quarterly cash dividends) or of subscription rights or
warrants (other than those referred to above).

     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price.  The Company is not required to issue fractional Units.  In lieu thereof,
an adjustment in cash may be made based on the market price of the Preferred
Stock prior to the date of exercise.

     At any time until ten business days following the Stock Acquisition Date, a
majority of the Independent Directors may redeem the Rights in whole, but not in
part, at a price of $.01 per Right (subject to adjustment in certain events)
(the "Redemption Price") payable, at the election of such majority of the
      ----------------                                                   
Independent Directors, in cash or shares of Company Common Stock.  Immediately
upon the action of a majority of the Independent Directors ordering the
redemption of the Rights, the Rights will terminate and the only right of the
holders of Rights will be to receive the Redemption Price.

     Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive
<PAGE>
 
                                       4

dividends.  While the distribution of the Rights will not be taxable to
stockholders or to the Company, stockholders may, depending upon the
circumstances, recognize taxable income in the event that the Rights become
exercisable for Units of Preferred Stock (or other consideration).

     Any of the provisions of the Rights Agreement may be amended without the
approval of the holders of Company Common Stock at any time prior to the
Distribution Date.  After the Distribution Date, the provisions of the Rights
Agreement may be amended in order to cure any ambiguity, defect or
inconsistency, to make changes which do not adversely affect the interests of
holders of Rights (excluding the interests of any Acquiring Person), or to
shorten or lengthen any time period under the Rights Agreement; provided,
                                                                -------- 
however, that no amendment to adjust the time period governing redemption shall
- - -------                                                                        
be made at such time as the Rights are not redeemable.

Description of Preferred Stock
- - ------------------------------

     The Units of Preferred Stock that may be acquired upon exercise of the
Rights will be nonredeemable and subordinate to any other shares of preferred
stock that may be issued by the Company.

     Each Unit of Preferred Stock will have a minimum preferential quarterly
dividend of $.01 per Unit or any higher per share dividend declared on the
Company Common Stock.

     In the event of liquidation, the holder of a Unit of Preferred Stock will
receive a preferred liquidation payment equal to the greater of $125 per Unit
and the per share amount paid in respect of a share of Company Common Stock.

     Each Unit of Preferred Stock will have one vote, voting together with the
Company Common Stock.

     In the event of any merger, consolidation or other transaction in which
shares of Company Common Stock are exchanged, each Unit of Preferred Stock will
be entitled to receive the per share amount paid in respect of each share of
Company Common Stock.

     The rights of holders of the Preferred Stock to dividends, liquidation and
voting, and in the event of mergers and consolidations, are protected by
customary antidilution provisions.

     Because of the nature of the Preferred Stock's dividend, liquidation and
voting rights, the economic value of one Unit of Preferred Stock that may be
acquired upon the exercise of each Right should approximate the economic value
of one share of Company Common Stock.
<PAGE>
 
                                                                File No. 6828-81
                                                                       EXHIBIT C
                                                                       ---------


                              MAGMA POWER COMPANY
                           CERTIFICATE OF DESIGNATION
                       OF THE VOTING POWERS, DESIGNATION,
                    PREFERENCES AND RELATIVE, PARTICIPATING,
              OPTIONAL OR OTHER SPECIAL RIGHTS AND QUALIFICATIONS,
                      LIMITATIONS AND RESTRICTIONS OF THE
                            SERIES A PREFERRED STOCK

                      -----------------------------------

                       Pursuant to Section 78.195 of the
                            Nevada Revised Statutes
                      -----------------------------------


          We, Ralph W. Boeker and Jon R. Peele, President and Secretary,
respectively, of Magma Power Company, a corporation organized and existing under
Chapter 78 of the Nevada Revised Statutes of the State of Nevada (the
                                                                     
"Corporation"), DO HEREBY CERTIFY:
- - ------------                      

          that, pursuant to authority conferred upon the Board of Directors of
the Corporation by its Articles of Incorporation (the "Articles"), and, pursuant
                                                       --------                 
to the provisions of Section 78.035, 78.195 and 78.196 of the Nevada Revised
Statutes, said Board of Directors, at a duly called meeting held on October 3,
1994, at which a quorum was present and acted throughout, adopted the following
resolution, which resolution remains in full force and effect on the date hereof
creating a series of 50,000 shares of Preferred Stock having a par value of $.10
per share, designated as Series A Preferred Stock (the "Series A Preferred
                                                        -------- ---------
Stock") out of the class of 1,000,000 shares of preferred stock of the par value
of $.10 per share (the "Preferred Stock"):
                        ---------------   

RESOLVED, that pursuant to the authority vested in the Board of Directors in
accordance with the provisions of its Restated Articles of Incorporation, the
Board of Directors does hereby create, authorize and provide for 50,000 shares
of its authorized Preferred Stock to be designated and issued as the Series A
Preferred Stock, having the voting powers, designation, relative, participating,
optional and other special rights, preferences and qualifications, limitations
and restrictions that are set forth as follows:

                  1.  Dividends and Distributions.  (A)  Subject to the prior
                  -------------------------------                            
and superior rights of the holders of any shares of any other series of
Preferred Stock or any other shares of preferred stock of the Corporation
ranking prior and superior to the shares of Series A
<PAGE>
 
Preferred Stock with respect to dividends, each holder of one one-thousandth
(1/1000) of a share (a "Unit") of Series A Preferred Stock shall be entitled to
                        ----                                                   
receive, when, as and if declared by the Board of Directors out of funds legally
available for that purpose, (i) quarterly dividends payable in cash on the last
day of April, July, October and February in each year (each such date being a
"Quarterly Dividend Payment Date"), commencing on the first Quarterly Dividend
Payment Date after the first issuance of such Unit of Series A Preferred Stock,
in an amount per Unit (rounded to the nearest cent) equal to the greater of (a)
$.01 or (b) subject to the provision for adjustment hereinafter set forth, the
aggregate per share amount of all cash dividends declared on shares of the
Common Stock since the immediately preceding Quarterly Dividend Payment Date,
or, with respect to the first Quarterly Dividend Payment Date, since the first
issuance of a Unit of Series A Preferred Stock, and (ii) subject to the
provision for adjustment hereinafter set forth, quarterly distributions (payable
in kind) on each Quarterly Dividend Payment Date in an amount per Unit equal to
the aggregate per share amount of all non-cash dividends or other distributions
(other than a dividend payable in shares of Common Stock or a subdivision of the
outstanding shares of Common Stock, by reclassification or otherwise) declared
on shares of Common Stock since the immediately preceding Quarterly Dividend
Payment Date, or with respect to the first Quarterly Dividend Payment Date,
since the first issuance of a Unit of Series A Preferred Stock.  In the event
that the Corporation shall at any time after

October 3, 1994 (the "Rights Declaration Date") (i) declare any dividend on
- - --------------        -----------------------                              
outstanding shares of Common Stock payable in shares of Common Stock, (ii)
subdivide outstanding shares of Common Stock or (iii) combine outstanding shares
of Common Stock into a smaller number of shares, then in each such case the
amount to which the holder of a Unit of Series A Preferred Stock was entitled
immediately prior to such event pursuant to the preceding sentence shall be
adjusted by multiplying such amount by a fraction the numerator of which shall
be the number of shares of Common Stock that are outstanding immediately after
such event and the denominator of which shall be the number of shares of Common
Stock that were outstanding immediately prior to such event.

          (B) The Corporation shall declare a dividend or distribution on Units
of Series A Preferred Stock as provided in paragraph (A) above immediately after
it declares a dividend or distribution on the shares of Common Stock (other than
a dividend payable in shares of Common Stock); provided, however, that, in the
                                               --------  -------              
event no dividend or distribution shall have been declared on the Common Stock
during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $.01 per Unit on the
Series A Preferred Stock shall nevertheless be payable on such subsequent
Quarterly Dividend Payment Date.

          (C) Dividends shall begin to accrue and shall be cumulative on each
outstanding Unit of Series A Preferred Stock from the Quarterly Dividend Payment
Date next preceding the date of issuance of such Unit of Series A Preferred
Stock, unless the date of issuance of such Unit is prior to the record date for
the first Quarterly Dividend Payment Date, in which case, dividends on such Unit
shall begin to accrue from the date of issuance of such Unit, or unless the date
of issuance is a Quarterly Dividend Payment Date or is a
<PAGE>
 
date after the record date for the determination of holders of Units of Series A
Preferred Stock entitled to receive a quarterly dividend and before such
Quarterly Dividend Payment Date, in either of which events such dividends shall
begin to accrue and be cumulative from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest. Dividends paid on Units of
Series A Preferred Stock in an amount less than the aggregate amount of all such
dividends at the time accrued and payable on such Units shall be allocated pro
rata on a unit-by-unit basis among all Units of Series A Preferred Stock at the
time outstanding.  The Board of Directors may fix a record date for the
determination of holders of Units of Series A Preferred Stock entitled to
receive payment of a dividend or distribution declared thereon, which record
date shall be no more than 30 days prior to the date fixed for the payment
thereof.

                   2.  Voting Rights.  The holders of Units of Series A
                       -------------                                   
Preferred Stock shall have the following voting rights:

          (A) Subject to the provision for adjustment hereinafter set forth,
each Unit of Series A Preferred Stock shall entitle the holder thereof to one
vote on all matters submitted to a vote of the stockholders of the Corporation.
In the event the Corporation shall at any time after the Rights Declaration Date
(i) declare any dividend on outstanding shares of Common Stock payable in shares
of Common Stock, (ii) subdivide outstanding shares of Common Stock or (iii)
combine the outstanding shares of Common Stock into a smaller number of shares,
then in each such case the number of votes per Unit to which holders of Units of
Series A Preferred Stock were entitled immediately prior to such event shall be
adjusted by multiplying such number by a fraction the numerator of which shall
be the number of shares of Common Stock outstanding immediately after such event
and the denominator of which shall be the number of shares of Common Stock that
were outstanding immediately prior to such event.

          (B) Except as otherwise provided herein, in the Articles of
Incorporation or by law, the holders of Units of Series A Preferred Stock and
the holders of shares of Common Stock shall vote together as one class on all
matters submitted to a vote of stockholders of the Corporation, and such holders
shall have no special voting rights and their consents shall not be required for
taking any corporate action.

          3.  Certain Restrictions.  (A)  Whenever quarterly dividends or other
          ------------------------                                             
dividends or distributions payable on Units of Series A Preferred Stock as
provided herein are in arrears, thereafter and until all accrued and unpaid
dividends and distributions, whether or not declared, on outstanding Units of
Series A Preferred Stock shall have been paid in full, the Corporation shall not

          (i)  declare or pay dividends on, make any other distributions on, or
     redeem or purchase or otherwise acquire for consideration any shares of
     junior stock;

          (ii)  declare or pay dividends on or make any other distributions on
     any shares
<PAGE>
 
     of parity stock, except dividends paid ratably on Units of Series A
     Preferred Stock and shares of all such parity stock on which dividends are
     payable or in arrears in proportion to the total amounts to which the
     holders of such Units and all such shares are then entitled;

          (iii)  redeem or purchase or otherwise acquire for consideration
     shares of any parity stock, provided, however, that the Corporation may at
                                 --------  -------                             
     any time redeem, purchase or otherwise acquire shares of any such parity
     stock in exchange for shares of any junior stock;

          (iv) purchase or otherwise acquire for consideration any Units of
     Series A Preferred Stock, except in accordance with a purchase offer made
     in writing or by publication (as determined by the Board of Directors) to
     all holders of such Units.

          (B) The Corporation shall not permit any subsidiary of the Corporation
to purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) this Section 3,
purchase or otherwise acquire such shares at such time and in such manner.

          4.  Reacquired Shares.  Any Units of Series A Preferred Stock
              -----------------                                        
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and cancelled promptly after the acquisition thereof.  All such
Units shall, upon their cancellation, become authorized but unissued Units of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
to be created by resolution or resolutions of the Board of Directors, subject to
the conditions and restrictions on issuance set forth herein.

          5.   Liquidation, Dissolution or Winding Up.  (A)  Upon any voluntary
               --------------------------------------                          
or involuntary liquidation, dissolution or winding up of the Corporation, no
distribution shall be made (i) to the holders of shares of junior stock unless
the holders of Units of Series A Preferred Stock shall have received, subject to
adjustment as hereinafter provided in paragraph (B), the greater of either (a)
$125 per Unit plus an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not earned or declared, to the date of such
payment, or (b) the amount equal to the aggregate per share amount to be
distributed to holders of shares of Common Stock, or (ii) to the holders of
shares of parity stock, unless simultaneously therewith distributions are made
ratably on Units of Series A Preferred Stock and all other shares of such parity
stock in proportion to the total amounts to which the holders of Units of Series
A Preferred Stock are entitled under clause (i)(a) of this sentence and to which
the holders of shares of such parity stock are entitled, in each case upon such
liquidation, dissolution or winding up.

          (B) In the event the Corporation shall at any time after the Rights
Declaration Date (i) declare any dividend on outstanding shares of Common Stock
payable in shares of Common Stock, (ii) subdivide outstanding shares of Common
Stock, or (iii) combine outstanding shares of Common Stock into a smaller number
of shares, then in each
<PAGE>
 
such case the aggregate amount to which holders of Units of Series A Preferred
Stock were entitled immediately prior to such event pursuant to clause (i)(b) of
paragraph (A) of this Section 5 shall be adjusted by multiplying such amount by
a fraction the numerator of which shall be the number of shares of Common Stock
that are outstanding immediately after such event and the denominator of which
shall be the number of shares of Common Stock that were outstanding immediately
prior to such event.

          6.  Consolidation, Merger, etc.  In case the Corporation shall enter
          ------------------------------                                      
into any consolidation, merger, combination or other transaction in which the
shares of common stock are exchanged for or converted into other stock or
securities, cash and/or any other property, then in any such case Units of
Series A Preferred Stock shall at the same time be similarly exchanged for or
converted into an amount per Unit (subject to the provision for adjustment
hereinafter set forth) equal to the aggregate amount of stock, securities, cash
and/or any other property (payable in kind), as the case may be, into which or
for which each share of Common Stock is converted or exchanged.  In the event
the Corporation shall at any time after the Rights Declaration Date (i) declare
any dividend on outstanding shares of Common Stock payable in shares of Common
Stock, (ii) subdivide outstanding shares of Common Stock, or (iii) combine
outstanding Common Stock into a smaller number of shares, then in each such case
the amount set forth in the immediately preceding sentence with respect to the
exchange or conversion of Units of Series A Preferred Stock shall be adjusted by
multiplying such amount by a fraction the numerator of which shall be the number
of shares of Common Stock that are outstanding immediately after such event and
the denominator of which shall be the number of shares of Common Stock that were
outstanding immediately prior to such event.

          7.  Redemption.  The Units of Series A Preferred Stock shall not be
          --------------                                                     
redeemable.

          8.  Ranking.  The Units of Series A Preferred Stock shall rank junior
          -----------                                                          
to all other series of the Preferred Stock and to any other class of preferred
stock that hereafter may be issued by the Corporation as to the payment of
dividends and the distribution of assets, unless the terms of any such series or
class shall provide otherwise.

          9.  Fractional Shares.  The Series A Preferred Stock may be issued in
          ---------------------                                                
Units or other fractions of a share, which Units or fractions shall entitle the
holder, in proportion to such holder's units or fractional shares, to exercise
voting rights, receive dividends, participate in distributions and to have the
benefit of all other rights of holders of Series A Preferred Stock.

          10.  Certain Definitions.  As used in this resolution with respect to
          ------------------------                                             
the Series A Preferred Stock, the following terms shall have the following
meanings:

          (A) The term "Common Stock" shall mean the class of stock designated
as the common stock, par value $.10 per share, of the Corporation at the date
hereof or any
<PAGE>
 
other class of stock resulting from successive changes or reclassification of
the common stock.

          (B) The term "junior stock" (i) as used in Section 3 shall mean the
Common Stock and any other class or series of capital stock of the Corporation
hereafter authorized or issued over which the Series A Preferred Stock has
preference or priority as to the payment of dividends and (ii) as used in
Section 5, shall mean the Common Stock and any other class or series of capital
stock of the Corporation over which the Series A Preferred Stock has preference
or priority in the distribution of assets on any liquidation, dissolution or
winding up of the Corporation.

          (C) The term "parity stock" (i) as used in Section 3 shall mean any
class or series of stock of the Corporation hereafter authorized or issued
ranking pari passu with the Series A Preferred Stock as to dividends and (ii) as
        ---- -----                                                              
used in Section 5, shall mean any class or series of capital stock ranking pari
                                                                           ----
passu with the Series A Preferred Stock in the distribution of assets on any
- - -----                                                                       
liquidation, dissolution or winding up.


          IN WITNESS WHEREOF, Magma Power Company has caused this Certificate to
be signed by its President and Chief Executive Officer and its Secretary this
4th day of October, 1994.

                               MAGMA POWER COMPANY


                                     /s/ Ralph W. Boeker
                               By ______________________________
                                         Ralph W. Boeker
                                         President

                                     /s/ Jon R. Peele
                               By ______________________________
                                         Jon R. Peele
                                         Secretary


Acknowledged:


<PAGE>
 
State of California
         ----------
County of San Diego
          ---------
On October 4, 1994 before me, Cheryl Ciabattini, Notary Public
   ---------------            --------------------------------
        DATE                  NAME, TITLE OF OFFICER
                                E.G. "Jane Doe, Notary Public"

                     Ralph W. Boeker and Jon R. Peele
personally appeared  --------------------------------
                        NAME(S) OF SIGNERS(S)

/x/ personally known to me - OR - / / proved to me on the basis of satisfactory
                                        evidence to be the person(s) whose
                                        name(s) is/are subscribed to the within
                                        instrument and acknowledged to me that
                                        he/she/they exectued the same in
                                        his/her/their authorized capacity(ies),
                                        and that by his/her/their signature(s)
                                        on the instrument the person(s), or the
                                        entity upon behalf of which the 
                                        person(s) acted, exectued the 
                                        instrument.
[Seal of the  CHERYL CIABATTINI
 state of     Comm. # 1004889   
 California]  NOTARY PUBLIC             WITNESS my hand and official seal
                 CALIFORNIA          
              San Diego County            
              My Comm. Expires               /s/ Cheryl Ciabattini
              Sept. 26, 1997            -------------------------------
                                          SIGNATURE OF NOTARY


- - ------------------------------------OPTIONAL-----------------------------------

Though the data below is not required by law, it may prove valuable to persons 
relying on the document and could prevent fraudulent reattachment of this form.

  CAPACITY CLAIMED BY SIGNER               DESCRIPTION OF ATTACHED DOCUMENT

/ / INDIVIDUAL                         
/X/ CORPORATE OFFICER                          Magma Power Company
                                              Certificate of Designation
  President and Executive Vice President   ---------------------------------
- - ----------------------------------------     TITLE OR TYPE OF DOCUMENT
              TITLE(S)

/ / PARTNER(S)          / / LIMITED
                       / /  GENERAL           Six (6)
                                            ---------------------------------
/ / ATTORNEY-IN-FACT                            NUMBER OF PAGES
/ / TRUSTEE(S)
/ / GUARDIAN/CONSERVATOR
/ / OTHER:
          ------------------------------            October 4, 1994
    ------------------------------------    -------------------------------
    -----------------------------------           DATE OF DOCUMENT

SIGNER IS REPRESENTING:
NAME OF PERSON(S) OR ENTITY(IES)                   

  Magma Power Company                            none
- - ----------------------------------------     ------------------------------
                                             SIGNER(S) OTHER THAN NAMES ABOVE
- - ----------------------------------------



    C 1993 NATIONAL NOTARY ASSOCIATION x 8236 Remmet Ave., P.O. Box 7184 x 
                          Canoga  Park, CA 91309-7184
 






<PAGE>
 
                                                                      EXHIBIT 99

[LOGO OF MAGMA POWER COMPANY                    4365 EXECUTIVE DRIVE, SUITE 900
 APPEARS HERE]                                  SAN DIEGO, CALIFORNIA 92121
                                                619 622-7800  FAX 619 622-7822
News Release                                    CONTACT: INVESTOR RELATIONS
FOR IMMEDIATE RELEASE

                                        CONTACT:  Thomas Davies
                                                  Andrea Bergofin
                                                  Kekst & Company
                                                  (212) 593-2655

                              MAGMA POWER COMPANY
                        ADOPTS STOCKHOLDER RIGHTS PLAN

        San Diego, CA October 3, 1994--Magma Power Company (NASDAQ: MGMA) 
announced today that its Board of Directors adopted a Stockholder Rights Plan in
which preferred stock purchase rights will be distributed as a dividend at the 
rate of one Right for each share of Common Stock held as of the close of 
business on October 14, 1994.

        On September 19, 1994, Magma received an unsolicited proposal from 
California Energy Company, Inc. to purchase Magma for $25 of cash and $10 of 
California Energy common stock. Magma said that the Rights are designed to guard
against partial tender offers, such as that contemplated by California Energy, 
and other abusive tactics that might be used in an attempt to gain control of 
the Company without paying all stockholders a fair price for their shares. The 
Rights Plan will not prevent takeovers, but is designed to deter coercive 
takeover tactics.

        Each Right will entitle stockholders to buy one one-thousandth of a
newly issued share of Series A Preferred Stock of the Company at an exercise
price of $125.00. The Rights will be exercisable only if a person or group
acquires beneficial ownership of 10% or more of the Company's outstanding Common
Stock or commences a tender or exchange offer upon consummation of which a
person or group would beneficially own 20% or more of the Company's outstanding
Common Stock.

        If any person becomes the beneficial owner of 10% or more of the 
Company's outstanding Common Stock, or if a holder of 10% or more of the 
Company's Common Stock, engages in certain self-dealing transactions or a merger
transaction in which the Company is the surviving corporation and its Common 
Stock remains outstanding, then each Right not owned by such person or certain 
related parties will entitle its holder to purchase, at the Right's 
then-current exercise price, shares of the units of the Company's Series A 
Preferred Stock (or, in certain circumstances, Company Common Stock, cash, 
property or other securities of the Company) having a market value equal to 
twice the then-current price. In addition, if the Company is involved in a 
merger or other business combination transaction with another person after which
its Common Stock does not remain outstanding, or sells 50% or more of its assets
or earning power to another person, each Right will entitle its holder to 
purchase, at the Right's then-current exercise price, shares of common stock of 
such other person having a market value equal to twice the then-current exercise
price. The plan does not apply to existing 10% or greater stockholders of Magma,
unless the existing stockholder increases its ownership interest by 4% or more.

        Magma Power Company will generally be entitled to redeem the Rights at 
$.01 per right at any time until the 10th business day following public 
announcement that a person or group has acquired 10% or more of the Company's 
Common Stock.

        Magma also announced that it has amended its bylaws to remove the 
ability of stockholders to act by written consent.

        Magma Power Company is a leader in the geothermal industry. The Company 
currently operates seven geothermal plants in Southern California on geothermal 
leaseholds and fee interests held by the Company and holds additional geothermal
leasehold and fee interests in other parts of California and Nevada. Magma is 
also currently constructing three power plants in the Philippines with a total 
capacity of 231 MW.


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