U S ENERGY SYSTEMS INC
8-K/A, EX-2.1, 2000-09-05
ELECTRIC, GAS & SANITARY SERVICES
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                             SUBSCRIPTION AGREEMENT


         THIS AGREEMENT (the "Agreement"),  dated as of August 23, 2000, is made
and entered into by and among U.S. Energy Systems  Castlebridge  LLC, a Delaware
limited  liability  company  ("USE"),  Kemper-Castlebridge,   Inc.,  a  Delaware
corporation  ("KC"),  Castlebridge  Partners,  LLC, a Delaware limited liability
company (the "Company") and GKM II Corporation,  a Delaware  corporation  ("GKM"
and together with KC, the "Initial Members").


                                    RECITALS

         A. The  Company  desires to issue to USE an  Interest  (as such term is
defined in the Restated  Operating  Agreement (as defined below)) in the Company
and USE  desires  to  purchase  such an  Interest  so that USE  will  have a 25%
Percentage (as such term is defined in the Restated Operating  Agreement) of the
Company.

         B. In order to pay the purchase price to acquire such an Interest,  USE
desires  to make a capital  contribution  to the  Company in the amount of Three
Million Five Hundred  Thousand  Dollars  ($3,500,000) by delivering  583,333 1/3
shares of common stock (the "Common  Stock") of U. S. Energy  Systems Inc. ("USE
Parent") to or for the benefit of the Company as set forth below.

         C. Concurrently with the Contribution and the Company's purchase of the
Interest as  provided in Recitals A and B above,  USE, KC and GKM will amend and
restate the Amended and Restated  Operating  Agreement  dated as of May 27, 2000
(the  "Current  Operating  Agreement")  by executing and  delivering  the Second
Amended and Restated Operating Agreement as set forth in Annex A attached hereto
and hereby made a part hereof (the "Restated Operating Agreement").

         D. The Company is engaged in the business of capital markets consulting
(the "Business").

         Now,  therefore,  in  consideration  of the  foregoing  and the  mutual
covenants and agreements  hereinafter set forth, and for other good and valuable
consideration,  the receipt and sufficiency of which is hereby acknowledged, the
parties hereto agree as follows:


                                    ARTICLE I

                    ISSUANCE OF INTEREST AND OTHER AGREEMENTS


         Section 1.1.  Issuance of  Interest.  Upon the terms and subject to the
conditions  set forth in this  Agreement,  on or  before  August  23,  2000 (the
"Closing Date" or the  "Closing"),  the Company will issue,  transfer and convey
the Interest to USE and  simultaneously  USE will purchase the Interest from the
Company by paying the purchase  price of Three  Million  Five  Hundred  Thousand
Dollars  ($3,5000,000)  (the "Purchase Price") by (I) delivering  568,750 shares
(the "USE Shares") of Common Stock to the Company and (II) delivering 14,583 1/3
shares of Common Stock to SPARKEnergy.com,  Corporation ("SPARK"), which payment
of the Purchase Price shall be deemed to be an Initial Capital  Contribution (as
such term is defined in the Restated  Operating  Agreement) of $3,500,000 to the
Company.


         Section 1.2.      Admittance as Member.  Upon receipt  of the  Purchase
Price from USE, USE will be admitted as a Member.

         Section 1.3. Restatement of Operating Agreement. Upon the admittance of
USE as a Member,  USE and the Initial Members shall execute and deliver upon the
Closing the Restated Operating  Agreement in the form attached hereto as Annex A
and hereby made a part hereof,  including Exhibit A thereto,  providing that USE
will have a  Percentage  interest  equal to 25% and each of the Initial  Members
will have a Percentage interest equal to 37.5%.

         Section 1.4. Services Agreement.  Following the Closing, USE Parent and
the Company shall execute and deliver a Services  Agreement  whereby the Company
shall provide consulting  services to USE Parent at the request of USE Parent on
terms to be set forth therein and it shall provide, among other things, that USE
Parent shall have  available  two hours of  consulting  services for every three
hours of consulting  services  provided to an Affiliate of KC (defined  below)).
Until the  effectiveness  of such  agreement,  the Company shall provide monthly
consulting  services to USE Parent as  requested by USE Parent on terms on which
USE  Parent and the  Company  may agree  provided  that the  Company  shall make
available time for such services on the basis of 44 hours to USE for 66 hours to
such Affiliate of KC.  "Affiliate" means with respect to a specified person: (i)
any person  that  directly  or  indirectly  through  one or more  intermediaries
controls  more  than  twenty-five  percent  (25%) of the  voting  or  beneficial
interests  in that  specified  person,  (ii) any  person in which the  specified
person  owns more than  twenty-five  percent  (25%) of the voting or  beneficial
interests,  (iii) any person  that is an  officer,  director,  general  partner,
managing member, or trustee of, or serves in a similar capacity with respect to,
such  specified  person (or an Affiliate of such  specified  person),  (iv) with
respect to an individual  person, any relative or spouse of the specified person
or (v) any person in which more than twenty-five  percent (25%) of the voting or
beneficial  interests  are  owned by a person  who has a  relationship  with the
specified person described in clauses (i), (ii), (iii) or (iv) above.



                                   ARTICLE II

                  REPRESENTATIONS, WARRANTIES AND AGREEMENTS OF
                       THE COMPANY AND THE INITIAL MEMBERS


         As an inducement to USE to enter into this  Agreement and to consummate
the  transactions  contemplated  hereby,  the Company and GKM hereby jointly and
severally  represent and warrant to, and agree with, USE (except with respect to
the representations and warranties contained in Sections 2.5(b),  2.6(b), 2.7(b)


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and 2.31(a)) and subject to section  2.30(b)  hereof KC represents  and warrants
to, and agrees with, USE as follows:

         Section 2.1.  Organization  of the  Company.  The Company is a Delaware
limited  liability  company formed,  validly existing and in good standing under
the laws of the State of  Delaware.  The Company is qualified to do business and
in good  standing in each  jurisdiction  which the  ownership  or leasing of its
properties or the conduct of its Business  requires  qualification.  The Company
has full power and  authority  to own its assets and to carry on its Business as
now conducted.

         Section  2.2.  Authority  of the  Company.  The  Company has full legal
right,  power,  capacity and authority to execute and deliver this Agreement and
all of the other agreements and instruments  contemplated  hereby, to consummate
the transactions  contemplated  hereby and thereby and to comply with the terms,
conditions  and  provisions  hereof and thereof.  This  Agreement and each other
agreement or  instrument  of the Company  contemplated  hereby  constitutes  the
legal, valid and binding agreement of the Company enforceable in accordance with
their  respective  terms,  except as  enforcement  may be limited by  applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
enforcement  of creditors'  rights  generally and general  equitable  principles
regardless of whether such  enforceability  is considered in a proceeding at law
or in equity.

         Section 2.3. No Violation by the Company. The execution and delivery of
this Agreement by the Company, the performance by the Company of its obligations
hereunder and the consummation by the Company of the  transactions  contemplated
by this  Agreement  will not:  (i)  violate or conflict  with any law,  statute,
ordinance, rule, regulation, decree, writ, injunction,  judgment or order of any
governmental  authority or of any arbitration  award which is either  applicable
to, binding upon or enforceable against the Company;  (ii) conflict with, result
in any breach of, or  constitute  a default (or an event which  would,  with the
passage of time or the giving of notice or both, constitute a default) under, or
give rise to a right to terminate,  amend,  modify,  abandon or accelerate,  any
contract  which is  applicable  to,  binding  upon or  enforceable  against  the
Company;  (iii)  result in, or require the creation or  imposition  of, any lien
upon or with respect to any of the  property or assets of the  Company;  or (iv)
require the  consent,  approval,  authorization  or permit of, or filing with or
notification to, any governmental authority,  any court or tribunal or any other
Person.

         Section 2.4. No Finder. Other than the obligation of the Company to pay
$87,500 to SPARK, which obligation shall be satisfied by USE's delivering 14,583
1/3 shares of Common Stock to SPARK  pursuant to Section 1.1 hereof,  for acting
as broker in connection  with the  transactions  contemplated by this Agreement,
none of the  Company or the  Initial  Members,  nor any  Person  acting on their
behalf, has paid or become obligated to pay any fee or commission to any broker,
finder or  intermediary  for or on account of the  transactions  contemplated by
this Agreement.

         Section 2.5. Organization of the Initial Members. (a) GKM is a Delaware
corporation  organized,  validly existing and in good standing under the laws of
the State of Delaware.  GKM is qualified to do business and in good  standing in
each  jurisdiction  which the  ownership  or  leasing of its  properties  or the


                                      -3-
<PAGE>

conduct of its business requires qualification. GKM has full power and authority
to own its assets and to carry on its business as now conducted.

                  (b) KC is a Delaware corporation  organized,  validly existing
and in good standing under the laws of the State of Delaware. KC is qualified to
do business and in good  standing in each  jurisdiction  which the  ownership or
leasing of its properties or the conduct of its business requires qualification.
KC has full power and  authority  to own its assets and to carry on its business
as now conducted.

         Section 2.6.  Authority of the Initial Members.  (a) GKM has full legal
right,  power,  capacity and authority to execute and deliver this Agreement and
all of the other agreements and instruments  contemplated  hereby, to consummate
the transactions  contemplated  hereby and thereby and to comply with the terms,
conditions  and  provisions  hereof and thereof.  This  Agreement and each other
agreement or  instrument of GKM  contemplated  hereby have been  authorized  and
constitute  the  legal,  valid  and  binding  agreement  of GKM  enforceable  in
accordance with their respective terms,  except as enforcement may be limited by
applicable bankruptcy,  insolvency,  reorganization,  moratorium or similar laws
affecting the enforcement of creditors'  rights generally and general  equitable
principles  regardless  of  whether  such  enforceability  is  considered  in  a
proceeding at law or in equity.

                  (b) KC has full legal right, power,  capacity and authority to
execute  and  deliver  this  Agreement  and  all of  the  other  agreements  and
instruments  contemplated  hereby,  to consummate the transactions  contemplated
hereby and  thereby  and to comply  with the terms,  conditions  and  provisions
hereof and thereof.  This Agreement and each other agreement or instrument of KC
contemplated  hereby have been  authorized and  constitute the legal,  valid and
binding  agreement of KC enforceable in accordance with their respective  terms,
except as  enforcement  may be limited  by  applicable  bankruptcy,  insolvency,
reorganization,   moratorium  or  similar  laws  affecting  the  enforcement  of
creditors'  rights  generally  and general  equitable  principles  regardless of
whether such enforceability is considered in a proceeding at law or in equity.

         Section 2.7. No Violation by the Initial  Members (a) The execution and
delivery of this  Agreement by GKM, the  performance  by GKM of its  obligations
hereunder and the consummation by GKM of the  transactions  contemplated by this
Agreement  will not: (i) violate or conflict with any law,  statute,  ordinance,
rule,  regulation,   decree,  writ,   injunction,   judgment  or  order  of  any
governmental  authority or of any arbitration  award which is either  applicable
to, binding upon or enforceable  against GKM; (ii) conflict with,  result in any
breach of, or constitute a default (or an event which would, with the passage of
time or the giving of notice or both,  constitute a default) under, or give rise
to a right to terminate,  amend,  modify,  abandon or  accelerate,  any contract
which is applicable to,  binding upon or  enforceable  against GKM; (iii) result
in, or require the creation or  imposition  of, any lien upon or with respect to
any of the  property or assets of GKM; or (iv)  require the  consent,  approval,
authorization  or permit of, or filing with or notification to, any governmental
authority, any court or tribunal or any other Person.

                                      -4-
<PAGE>

                  (b) The  execution  and delivery of this  Agreement by KC, the
performance by KC of its obligations hereunder and the consummation by KC of the
transactions  contemplated  by this  Agreement will not: (i) violate or conflict
with any law, statute,  ordinance,  rule, regulation,  decree, writ, injunction,
judgment or order of any  governmental  authority  or of any  arbitration  award
which is either  applicable  to,  binding upon or  enforceable  against KC; (ii)
conflict  with,  result in any breach of, or  constitute  a default (or an event
which  would,  with  the  passage  of time or the  giving  of  notice  or  both,
constitute  a  default)  under,  or give  rise to a right to  terminate,  amend,
modify, abandon or accelerate, any contract which is applicable to, binding upon
or  enforceable  against  KC;  (iii)  result  in, or  require  the  creation  or
imposition of, any lien upon or with respect to any of the property or assets of
KC; or (iv) require the consent, approval, authorization or permit of, or filing
with or notification  to, any governmental  authority,  any court or tribunal or
any other Person.

         Section 2.8.      Annual Financial Statements Previously Delivered. (a)
The Company has furnished to USE copies of annual unaudited financial statements
listed  and  described on  Schedule 2.8 attached  hereto and  hereby made a part
hereof for the three years ended December 31, 1999.

         (b) Each of the  financial  statements  referred to in paragraph (a) of
this  Section  2.8  has  been  prepared  in  accordance  with  sound  accounting
principles and practices  consistently applied, is true, correct and complete in
all material respects and fairly presents the financial position of the Company,
as of the date thereof or, as the case may be, the results of operations for the
periods  covered  thereby.   The  assets  are  carried  in  the  balance  sheets
constituting a part of such financial  statements at cost less all  depreciation
and  amortization  and  each  of  said  balance  sheets  fully  sets  forth  all
liabilities of whatever nature of the Company,  existing as of the date thereof.
The  statements  of  income  constituting  a part of such  financial  statements
correctly state the revenues and net earnings of the Company, for the respective
periods  covered  thereby  and include  adequate  provision  for all taxes.  All
accounts  receivable shown on such balance sheets are collectible,  subject only
to the reserves on such  balance  sheets.  The  financial  statements  have been
prepared  and the records of the Company have been kept in such a manner so that
it would be possible to prepare without unreasonable expense or hardship audited
annual  financial  statements for the Company for fiscal 1999 in accordance with
generally accepted accounting principles that would comply with the requirements
of Regulation S-X promulgated by the Securities and Exchange Commission.


         Section 2.9.      Interim Financial Statements and Projections.

         (a) The Company has  furnished  to USE copies of the interim  unaudited
financial  statements  of the  Company  listed and  described  on  Schedule  2.9
attached hereto and hereby made a part hereof for periods ending June 30, 2000.

         (b) Each of the  financial  statements  referred to in paragraph (a) of
this  Section  2.9  has  been  prepared  in  accordance  with  sound  accounting
principles and practices  consistently applied, is true, correct and complete in
all material respects and fairly presents the financial position of the Company,
as of the date thereof or, as the case may be, the results of operations for the


                                   -5-

<PAGE>

periods  covered  thereby.   The  assets  are  carried  in  the  balance  sheets
constituting a part of such financial  statements at cost less all  depreciation
and  amortization  and said balance  sheets fully set forth all  liabilities  of
whatever nature of the Company,  existing as of the date thereof. The statements
of income constituting a part of such financial  statements  correctly state the
revenues and net earnings of the Company,  for the  respective  periods  covered
thereby and include adequate  provision for all taxes.  All accounts  receivable
shown on such balance  sheets are  collectible,  subject only to the reserves on
such balance sheets.

         (c) The Company has furnished to USE copies of the  projections  of the
Company  listed and described on Schedule 2.9 attached  hereto and hereby made a
part hereof (the "Projections").

         (d) Each of the  Projections  has been prepared  based upon  reasonable
assumptions  made  in  good  faith  and  in  accordance  with  sound  accounting
principles  and  practices   consistently  applied  and  information   currently
available.  The Projections  contain  forward-looking  statements  which involve
known and unknown  risks,  uncertainties  and other  factors which may cause the
actual  results,  performance  and  achievements  of the  Company,  or  industry
results,  to be materially  different from any future results,  performance,  or
achievements  expressed  or implied  by such  forward-looking  statements.  Such
factors  include,  among  others,  general  economic  and  business  conditions,
industry capacity, industry trends, competition,  litigation, material costs and
availability,  the loss of any significant management personnel, the loss of any
significant  customers,  changes in  business  strategy  or  development  plans,
quality of management,  availability,  terms and deployment of capital, business
abilities  and  judgment of  personnel,  availability  of  qualified  personnel,
changes in, or the failure to comply  with,  government  regulations,  and other
factors referenced herein and in the Projections.  Therefore the Company and GKM
are making no  representation,  warranty or guarantee that the results set forth
in the  Projections,  or the  assumptions  upon  which  they are  based  will be
realized and notwithstanding  anything to the contrary in this Agreement,  KC is
making no representation or warranty  whatsoever as to the financial  statements
or Projections referred to in this Agreement.

         Section 2.10. Operations. Except as disclosed on Schedule 2.10 attached
hereto and hereby made a part hereof,  since  December  31, 1999,  there has not
been  any  material  adverse  change  in  the  business,  operations,  financial
position,  properties and other assets of the Company,  and since such date, the
Business has been conducted in the usual,  regular and ordinary manner and shall
continue,  through and  including  the Closing  Date,  to be  conducted  in such
manner,  unless prior written  approval for any variation  therefrom  shall have
first been secured  from USE.  Except as  disclosed  on Schedule  2.10  attached
hereto,  for the period from  December 31, 1999,  to and  including  the Closing
Date,  the  following is and will be true with  respect to the Company,  and the
operation of the Business:

                   (a)  All  transactions   involving  the  Company,  have  been
         accurately  and fully  recorded  or  otherwise  reflected  in books and
         records of the Company;

                   (b)  The  Company  has  not  sold,  exchanged,   conveyed  or
         otherwise  disposed,  or  subjected  to  lien,  pledge,  hypothecation,
         mortgage, or other encumbrance, any assets or properties;


                                      -6-
<PAGE>
                   (c) The Company has paid its debts and liabilities, including
         taxes, fees, levies and assessments in the ordinary course as they have
         matured;

                   (d) The  Company has not  incurred  any debt,  obligation  or
         liability  other  than those  incurred  in the  ordinary  course of its
         businesses,  which  are not of a  material  nature or  individually  in
         excess of  $10,000,  and which do not or will not  presently,  with the
         passage of time or upon default,  subject the  Company's  assets to any
         lien,  claim,  charge,  mortgage  or other  encumbrance,  nor have they
         undertaken  to  guarantee  in  whole  or in  part,  any of  the  debts,
         obligations or liabilities of any other party;

                   (e) The  Company  has not  altered,  amended,  terminated  or
         discharged any written or oral  contract,  lease,  plan,  commitment or
         agreement  to which the Company is  presently  a party,  nor waived any
         material right with respect thereto, nor permitted or consented to such
         alteration,  amendment,  termination or discharge,  nor has the Company
         committed a breach or default in any of the provisions thereof;

                   (f) The  Company  has not  entered  into any  written or oral
         contract  except in the  ordinary  course of business at the prices and
         upon the  terms  consistent  with its past  practices  and which do not
         violate any representation, warranty or covenant of this Agreement;

                   (g)     The Company has complied with all laws applicable  to
         the conduct of the Business;

                   (h) The Company has conducted the Business only in the usual,
         regular and  ordinary  course and in  substantially  the same manner as
         theretofore conducted;

                   (i)     The  Company  has not  engaged in any business other
                           than the Business;

                   (j) The Company has maintained its properties and assets in a
         good state of repair, order and condition, reasonable wear and tear and
         damage  by fire or  other  casualty  adequately  covered  by  insurance
         excepted; and

                   (k) There has not occurred any  transaction or event,  nor to
         the best knowledge of the Company and the GKM (and the actual knowledge
         of KC) is any  anticipated,  which  does or may  adversely  affect  the
         Company or the Business in any material respect.

         Section 2.11.  Liabilities and Obligations of the Company.  The Company
will have on the Closing Date no debts, liabilities,  contracts,  commitments or
other  obligations,  direct or indirect,  absolute or contingent,  determined or
undetermined,  known or unknown, which are not reflected, described or disclosed
in (i) the June 30, 2000 financial  statements referred to in Section 2.9 hereof
or (ii) any of the  Schedules  attached  hereto,  except  those  arising  in the
ordinary course of Business after June 30, 2000 which are not and will not be of
a material nature, or individually in excess of $10,000, are not and will not be
in  violation  of any  representation,  warranty or covenant  contained  in this


                                      -7-

<PAGE>

Agreement,  and are not and will not have an adverse effect upon the operations,
financial position, prospects or properties of the Company or the Business.

         Section  2.12.  Title.  Except as set forth in Schedule  2.12  attached
hereto and made a part hereof,  the Company has good and marketable title to all
of its  assets,  free and  clear of all  liabilities,  liens,  charges,  claims,
rights,  encumbrances and restrictions on transfers,  and no financing statement
covering all or any portion of its assets and naming the Company,  as debtor has
been filed in any public  office,  and the Company has not signed any  financing
statement or security agreement as debtor or borrower which financing  statement
or security  agreement  covers all or any portion of its assets,  except for (a)
liens for current taxes not yet due and payable,  and (b) properties,  interests
and assets sold or otherwise  disposed of after June 30,  2000,  in the ordinary
course of business.

         Section 2.13. Right to Inspect the Properties and Records.  Between the
execution  of  this  Agreement  and  Closing,  USE and  its  agents,  attorneys,
accountants,  employees,  contractors and other authorized representatives shall
have  the  right,  at any  reasonable  time  and  from  time  to time as USE may
reasonably  deem  appropriate,  to examine  the  properties  and  records of the
Company  and GKM,  and of their  respective  Affiliates  (other  than KC and its
Affiliates  (other  than  the  Company)),  and  to  make  such  tests,  surveys,
investigations and other inspections in such manner as USE may deem necessary or
desirable.  No  investigation  or  examination  by USE or any of its  agents  or
representatives  of such  properties  and  records of the  Company or GKM, or of
their respective Affiliates,  shall affect the representations and warranties of
the Company and the Initial Members contained in this Agreement.

         Section 2.14.  Insurance.  (a) The Company has in effect such insurance
coverage  described  on  Schedule  2.14  attached  hereto and hereby made a part
hereof,  which description  includes the name of the insurer, the policy number,
the name of the insureds, the type and amount of coverage and risks insured, and
the  Company has  delivered  to USE  complete  and  accurate  copies of all such
insurance policies. Such insurance coverage, as to amounts and types of coverage
and risks  insured,  in the  reasonable  judgment  of the  Company  and GKM,  is
adequate for the Business as presently conducted.

         (b) Schedule 2.14 attached  hereto  contains a list and  description of
all claims  made  against  the  insurance  policies  held by the Company for the
previous  two (2) years,  excepting  therefrom  claims made by  employees of the
Company against health insurance plan carriers, and the Company has delivered to
USE complete and accurate  copies of all insurance  policies held by the Company
for the previous two (2) years.

         (c)  Schedule  2.14  attached  hereto  contains  a list of all bonds on
employees  and other  personnel  of the  Company.  Each of such bonds is in full
force and effect.


         Section 2.15.  Litigation  and Claims.  Except as set forth in Schedule
2.15 attached  hereto and hereby made a part hereof,  there are no  litigations,
suits,  claims,  demands or proceedings  pending or to the best knowledge of the
Company  and GKM (and the  actual  knowledge  of KC) in  prospect,  asserted  or
threatened  against or  relating  to or  affecting  the  Company or the  Initial

                                      -8-

<PAGE>

Members, or their properties or assets, nor to the best knowledge of the Company
and GKM (and the actual knowledge of KC) is there any meritorious  basis for any
such suit, claim,  demand or proceeding,  nor is there in existence any judgment
or award  against  any of the  Company or the  Initial  Members,  relating to or
affecting any of the Company or the Initial Members, or the properties or assets
of the Company or the Initial Members.  To the best knowledge of the Company and
GKM (and the  actual  knowledge  of KC),  none of the  Company  and the  Initial
Members,  or  their  Affiliates,  is  under  investigation  by any  governmental
authority  or   self-regulatory   organization  for  violation  of  any  law  or
regulation.

         Section 2.16. Employment Obligations. Schedule 2.16 attached hereto and
hereby made a part hereof lists the names,  commencement dates of employment and
the current salary and other  compensation rates of all present employees of the
Company,  together with a listing of all other employment  benefits,  including,
without  limitation,  personal leave time, employee loans an accurate summary of
any pension,  profit  sharing,  bonus,  medical  benefits,  insurance or similar
arrangements  for  the  employees  of  the  Company,  salaried  or  nonsalaried,
including any formal or informal  plans,  the funding  arrangements  with regard
thereto and all severance pay and other obligations which would be due employees
if their  employment  was  terminated as of June 30, 2000. As of the date hereof
there are no accrued  profit  sharing or pension  benefits  with  respect to any
Company  employee.  Except  as and to the  extent  set  forth on  Schedule  2.16
attached  hereto  or  otherwise  disclosed  herein,  there  are  no  agreements,
contracts or  understandings  between the Company and its employees with respect
to  employment,   wages,  expenses,   allowances,   vacations,   hours,  working
conditions,  bonuses,  salaries,  pensions,  profit sharing,  medical  benefits,
insurance benefits, severance pay or otherwise.

        Section 2.17.    Compliance  with ERISA.  (a) The Company is not a party
to nor participates in or has any liability or contingent liability with respect
to:

                    1. Any "employee  welfare benefit plan" or "employee pension
         benefit plan" (as those terms are respectively defined in Sections 3(l)
         and 3(2) of the Employee  Retirement  Income  Security Act of 1974,  as
         amended ("ERISA"),  including any "multi-employer  plan" (as defined in
         Section 3(37) of ERISA)), except as set forth on Schedule 2.16 attached
         hereto;

                    2. Any retirement or deferred  compensation plan,  incentive
         compensation   plan,  stock  option  plan,  stock  plan,   unemployment
         compensation  plan,  vacation  pay,  severance  pay,  bonus or  benefit
         arrangement,  insurance or hospitalization  program or any other fringe
         benefit arrangements  (referred to collectively  hereinafter as "fringe
         benefit arrangements") for any employee, director, consultant or agent,
         whether   pursuant  to  contract,   arrangement,   custom  or  informal
         understanding, which does not constitute an "employee benefit plan" (as
         defined in Section 3(3) of ERISA), except as set forth on Schedule 2.16
         attached hereto; or

                    3. Any employment agreement not terminable on thirty (30) or
         fewer days' written notice,  without further  liability,  except as set
         forth on Schedule 2.16 attached hereto.


                                      -9-
<PAGE>

         (b) A true and  correct  copy of each of the  plans,  arrangements  and
agreements listed on Schedule 2.16 attached hereto,  and all contracts  relating
thereto, or to the funding thereof,  including,  without  limitation,  all trust
agreements, insurance contracts, investment management agreements,  subscription
and participation agreements and record keeping agreements, each as in effect on
the date hereof,  has been  delivered to USE by the Company.  In the case of any
plan,  arrangement  or  agreement  which is not in  written  form,  USE has been
provided with an accurate description of such plan,  arrangement or agreement as
in effect on the date hereof.  A true and correct copy of the most recent annual
report,  actuarial report, summary plan description and Internal Revenue Service
determination  letter  with  respect  to each such plan or  arrangement,  to the
extent  applicable,  and a current schedule of assets (and the fair market value
thereof  assuming  liquidation of any asset which is not readily  tradable) held
with respect to any funded plan  arrangement  or agreement  has been supplied to
USE by the  Company,  and there have been no material  changes in the  financial
condition  in the  respective  plans from that stated in the annual  reports and
actuarial reports supplied.

         (c)    As to all plans,  arrangements  and  agreements  of the Company
listed on  Schedule 2.16  attached hereto:

                   (1)  All   employee   benefit   plans  and   fringe   benefit
         arrangements   comply  and  have  been  administered  in  form  and  in
         operation,   in  all  material   respects,   in  compliance   with  all
         requirements of law and regulation  applicable thereto, and the Company
         has not received any notice from any governmental agency questioning or
         challenging such compliance;

                   (2) All employee  pension benefit plans comply in form and in
         operation  with all  applicable  requirements  of  Sections  401(a) and
         501(a) of the Internal  Revenue Code of 1986,  as amended (the "Code");
         there have been no  amendments  to such plans which are not the subject
         of a  determination  letter issued with respect thereto by the Internal
         Revenue  Service;  and no event has  occurred  which will or could give
         rise to  disqualification  of any such plan under such sections or to a
         tax under Section 511 of the Code;

                   (3)  None of the  assets  of any  employee  benefit  plan are
         invested in employer securities or employer real property;

                   (4)  There  have  been  no  "prohibited   transactions"   (as
         described  in Section  406 of ERISA or  Section  4975 of the Code) with
         respect to any employee  benefit plan and the Company has not otherwise
         engaged in any prohibited transaction;

                   (5) As to any employee  pension benefit plan which is subject
         to Title IV of  ERISA,  there  have  been no  "reportable  events"  (as
         described  in Section  4043 of ERISA),  and no steps have been taken to
         terminate any such plan;

                   (6) There have been no acts or omissions by the Company which
         have  given  rise to or may give  rise to  fines,  penalties,  taxes or

                                      -10-

<PAGE>

         related  charges  under  Sections  502(c),  502(i)  or 4071 of ERISA or
         Chapter 43 of the Code, for which the Company may be liable;

                   (7)  None  of  the  payments   contemplated  by  such  plans,
         arrangements and agreements would, in the aggregate,  constitute excess
         parachute payments as defined in Section 280G of the Code;

                   (8) There are no actions, suits or claims (other than routine
         claims for benefits) pending or threatened  involving such plans or the
         assets of such  plans,  and no facts exist which could give rise to any
         such actions, suits or claims (other than routine claims for benefits);

                   (9) All group  health  plans of the  Company  (including  any
         plans of current and former  Affiliates  of the  Company  which must be
         taken into account  under  Section  4980B of the Code or Section 601 of
         ERISA) have been  operated  in  compliance  with the group  health plan
         continuation  coverage  requirements  of Section  4980B of the Code and
         Section 601 of ERISA to the extent such  requirements  are  applicable;
         and

                  (10) Actuarially  adequate  accruals for all obligations under
         such plans,  arrangements  and  agreements are reflected in the balance
         sheet of the Company as June 30, 2000, described in Section 2.9 hereof.


         Section  2.18.  Preservation  of  Business  Relationships.  Between the
execution of this Agreement and Closing, the Company and GKM will use their best
efforts  to  preserve  the  relationships  of the  Company  with  the  Company's
employees,  agents, customers, and others having business relationships with the
Company.

         Section  2.19.  Tax  Returns.   The  Company  is  taxed  as  a  general
partnership  for Federal and state income tax purposes.  All Federal,  state and
local income, property,  franchise, sales, use and other tax returns and reports
required by law to be filed by the Company  have been filed.  There are no liens
for taxes affecting the Company. The Company has provided USE with true, correct
and complete  copies of all federal and state tax returns filed for all periods.
Except as set forth in  Schedule  2.19  attached  hereto and hereby  made a part
hereof,  the Company has not executed or filed with the Internal Revenue Service
any agreement  extending the period for assessment and collection of any Federal
tax, nor is the Company a party to any action or proceeding by any  governmental
authority for assessment or collection of taxes, nor has any claim or assessment
for collection of taxes been asserted against the Company or its Members.

         Section 2.20. Material Agreements. (a) Schedule 2.20(a) attached hereto
and hereby  made a part  hereof  accurately  lists (or with  respect to any oral
agreement  describes)  all  material  leases and  licenses  with  respect to any
property, real or personal (whether as landlord,  tenant, licensor or licensee),
contracts,  guarantees,  mortgages,  indentures,  agreements,  understandings or
other commitments,  whether oral or written, of the Company, and the Company has
delivered to USE complete and accurate  copies of all  documents  referred to on
Schedule  2.20(a)  attached  hereto,  each of which is in  effect  and valid and
enforceable in accordance with its terms,  except as such  enforceability may be

                                      -11-

<PAGE>

limited by bankruptcy,  insolvency,  reorganization,  moratorium or similar laws
affecting creditors generally and by general principles of equity.

         (b) Except as set forth in Schedules 2.20(b) attached hereto and hereby
made a part hereof,  between the date hereof and the Closing  Date,  the Company
will not,  without  the prior  written  consent  of USE,  enter  into,  amend or
terminate  any  contract,  guarantee,  mortgage,  indenture,  agreement or other
instrument  of any of the types  referred to in  paragraph  (a) of this  Section
2.20.

         (c) Except as set forth in Schedule  2.20(c) attached hereto and hereby
made a part hereof,  no Initial  Member nor any of its Affiliates of any Initial
Member owns any direct or indirect interest or investment in any person which is
a party to any of the  agreements  with the Company  listed in Schedule  2.20(a)
attached hereto.

         Section 2.21. Compliance with Laws. The Company's services,  practices,
billings, employee benefits, properties,  equipment,  machinery, buildings used,
and operations are in full  compliance  with all applicable  Federal,  state and
local  laws,   statutes,   ordinances,   codes,   regulations,   rules,  orders,
restrictions  and  requirements,  governmental,   administrative,  judicial  and
otherwise, including, without limitation,  environmental laws and those relating
to wages, securities,  commodities,  investment advisory services, prices, equal
opportunity,  environmental  protection,  safety, health, medical care, building
and  zoning,  and to the best  knowledge  of the  Company and GKM and the actual
knowledge  of KC, no  publicly  announced  changes in any such  laws,  statutes,
ordinances, codes, regulations, rules, orders, restrictions or requirements have
been proposed or are in prospect with which the Company could not comply without
any  materially  adverse  effect  on  the  operations,   properties,   financial
condition, profitability or prospects of the Company.

         Section  2.22.  Licenses,  Permits and  Approvals.  Attached  hereto as
Schedule  2.22 and hereby  made a part hereof is a list and  description  of all
licenses,  permits,  authorizations and approvals required of the Company or the
Initial Members by any Federal,  state or local  government's  administrative or
judicial  authorities  in  connection  with the  operation  of the  Business  as
presently being conducted or as contemplated by the Company, all of which are in
full  force and  effect  and,  except as  specifically  noted on  Schedule  2.22
attached hereto, will remain in full force and effect after the Closing Date.

         Section 2.23. Ownership of Properties. The Company owns all properties,
assets and facilities,  both tangible and intangible,  real,  personal and mixed
which are used in the  conduct of the  Business  by the  Company  except for the
leases of real and personal  property by the Company under the lease  agreements
listed and described in Schedule 2.20(a)  attached  hereto.  All of the tangible
assets of the Company are located at the  Company`s  offices at 900 West Jackson
Blvd., Suite 7E, Chicago, Illinois.

         Section 2.24. Intellectual Property. Schedule 2.24 sets forth a list of
all trademarks, service marks, trade names, copyrights, know-how, patents, trade
secrets,   licenses  (including  licenses  for  the  use  of  computer  software
programs), and other intellectual property of the Company used in the conduct of
the Business (the  "Intellectual  Property").  The Company has full legal right,

                                      -12-
<PAGE>

title and  interest  in and to all  Intellectual  Property.  The  conduct of the
Business  of the Company as  presently  conducted,  and,  except as set forth on
Schedule  2.24,  the   unrestricted   conduct  and  the   unrestricted  use  and
exploitation of the Intellectual  Property,  does not infringe or misappropriate
any rights  held or asserted by any  Person,  and to the best  knowledge  of the
Company and GKM (and the actual knowledge of KC), no Person is infringing on the
Intellectual  Property.  No payments are required for the  continued  use of the
Intellectual  Property,  except  as set  forth  in  Schedule  2.24.  None of the
Intellectual Property has ever been declared invalid or unenforceable, or is the
subject  of any  pending or  threatened  action  for  opposition,  cancellation,
declaration,  infringement, or invalidity,  unenforceability or misappropriation
or like claim,  action or proceeding.  The Company is not engaged in any kind of
unfair  or  unlawful  competition  nor  the  wrongful  use of  any  confidential
information or trade secrets or patentable  inventions of any former employee of
the Company or any other person, firm or corporation.

        Section 2.25.    Membership  Interests.  (a)  There  is only  one  class
of  membership Interests in the Company.  Fifty  percent (50%) of the membership
Interests  are owned and held by  GKM and fifty percent (50%) of the  membership
Interests are owned and held by KC.

         (b) All of the  issued  and  outstanding  membership  Interests  of the
Company are validly issued,  fully paid and nonassessable and were not issued in
violation of the preemptive rights or similar rights of any person.

         (c) There are no  outstanding,  and  immediately  prior to the  Closing
there  will be no  outstanding,  warrants,  options,  subscriptions,  contracts,
preemptive  or  other  rights,  membership  Interests  of the  Company  or other
arrangements  or  commitments  obligating  the  Company to issue any  additional
membership  Interests  of the  Company,  nor are  there any  securities,  debts,
obligations or rights outstanding which are convertible into or exchangeable for
Membership Interests of the Company.

         Section 2.26. Securities Law Matters. (a) The Company acknowledges that
it is making an  investment  by way of a private  placement  in USE Parent based
upon negotiations  between it and representatives of USE Parent. The Company has
received, read and is familiar with information relating to USE Parent which has
been  provided to the Company or which is available  in USE Parent  filings with
the U.S.  Securities  and Exchange  Commission,  and has been  provided with the
opportunity  to ask for and receive other  information  and documents  which the
Company  deems  relevant  and  which is  available  to USE  Parent.  Apart  from
information  provided by USE Parent or which is available  in USE Parent  filing
with the U.S. Securities and Exchange Commission,  the Company has not relied on
any other  statements  made to the Company by any other  person for  purposes of
entering  into  this  Agreement.  Furthermore,  the  Company  has been  given an
opportunity to consult  professional  advisors  regarding this  investment.  The
Company's  senior  management is  experienced  in financial  and  energy-related
matters.

         (b) The Company has been provided  with all  materials and  information
requested  by either  it,  its  counsel,  or others  representing  the  Company,
including any information requested to verify information  furnished,  and there
has  been   direct   communication   between   USE  Parent   and  USE   Parent's

                                      -13-

<PAGE>

representatives  on the one hand,  and the Company and its  representatives  and
advisors  on the other,  in  connection  with the  information  provided  to the
Company or otherwise available to the Company and its advisors who have also had
the opportunity to ask questions of, and receive answers from USE Parent and its
directors,  officers, and representatives concerning the terms and conditions of
this issuance.

         (c) The Company is acquiring the USE Shares for its own account and for
investment purposes only and has no present intention,  agreement or arrangement
for the  distribution,  transfer,  assignment,  resale or  subdivision  thereof;
provided, however, that except as otherwise expressly set forth herein or in the
Restated  Operating  Agreement,  the  disposition of the USE Shares shall at all
times be and remain within the Company's control.

         (d) The  Company  further  understands  and agrees  that the USE Shares
issued hereunder may not be offered, sold, transferred,  pledged or hypothecated
to any persons in the absence of registration  under the Securities Act of 1933,
as amended (the  "Securities  Act") and applicable  state securities laws, or an
opinion of counsel  satisfactory  to USE Parent  that such  registration  is not
required.

         Section 2.27. Investments,  Affiliates and Affiliate Operations. Except
for the  ownership of the entire  membership  interest in  Castlebridge  Weather
Markets,  LLC, a Delaware limited  liability  company  ("CWM"),  the Company has
never  owned  any  subsidiary  or  other  business  organization  or any  equity
ownership in any other entity.  CWM discontinued all operations prior to May 16,
2000. The entire membership  interests in CWM were distributed to GKM on May 16,
2000.  All  representations,  warranties  and  agreements of the Company and GKM
contained herein with respect to the Company includes all assets, operations and
liabilities of CWM. The Company has no debts or liabilities, direct or indirect,
absolute or continent, determined or undetermined,  known or unknown relating to
CWM and its prior operations or the distribution of the membership  interests of
CWM to GKM. In connection with the discontinuance of its operations, CWM and GKM
entered into that certain  Separation  Agreement  dated  January 7, 2000, by and
among CWM, the Company,  James Gosselin,  Ethan Kahn,  Paul Murray,  American Re
Corporation and American Re Capital Markets, Inc. (the "Separation  Agreement").
GKM, CWM and the Company are in compliance  with all terms and conditions in the
Separation Agreement.

        Section 2.28.  Disclosure.  No representation or warranty made herein by
the Company or the  Initial  Members and no written  statement,  certificate  or
Schedule  given or to be given to USE  pursuant to this  Agreement  on or before
Closing, or with respect to the transactions contemplated hereunder, contains or
will contain any untrue  statement of a material  fact, or omits or will omit to
state a material  fact  necessary  to make the  statements  contained  herein or
therein under the circumstances  under which they were made not misleading,  and
the  Company  and the  Initial  Members  have made,  and will make in good faith
through the Closing Date,  full disclosure of all material facts with respect to
the  Company  and  the  Initial  Members,  including,  without  limitation,  the
operations,  assets and prospects of the Company, which a prudent investor would
deem relevant.

                                      -14-
<PAGE>

        Section 2.29. Accuracy of Schedules.  There has been no material adverse
change in any of the matters reflected in any schedule  delivered by the Company
pursuant to this Agreement from the respective date thereof to and including the
date of this  Agreement,  nor will there be any material  adverse change in such
matters from the date hereof to and including the Closing Date.

        Section 2.30.  Basis for  Representations  and Warranties.  (a) Prior to
executing this  Agreement,  the Company and GKM have made such  affirmative  and
thorough reviews,  searches,  inspections and inquiries  relating to the Company
and GKM, have consulted  with such third  parties,  which a prudent person might
deem necessary or advisable in order to gain knowledge concerning the matters to
which the  representations and warranties relate and each of them shall continue
to make such reviews, searches, inspections and inquiries through the Closing. A
person's   knowledge  or  belief  with  respect  to  the  subject  matter  of  a
representation  and warranty contained herein shall be deemed to include matters
which such person  should have known with respect to the subject  matter of said
representations and warranties.

         (b) Prior to executing this Agreement, KC has made such affirmative and
thorough  reviews,  searches,  inspections  and  inquiries  relating  to KC, has
consulted with such third  parties,  which a prudent person might deem necessary
or advisable in order to gain knowledge concerning only the matters to which the
representations and warranties contained in Sections 2.5(b),  2.6(b), 2.7(b) and
2.31 (the "KC Representations")  relate and shall continue to make such reviews,
searches, inspections and inquiries regarding the KC Representations through the
Closing.  KC's  knowledge or belief with  respect to the subject  matter of a KC
Representation  shall be deemed to include matters which such person should have
known with respect to the subject matter of said representations and warranties.
Any  representation  and warranty made by KC contained in this  Agreement  other
than the KC Representations shall be deemed to be limited to matters as to which
KC has actual knowledge.

                  Section 2.31.     Investment Company Act. (a) KC is considered
to be "one person" for purposes of calculating the  number of  beneficial owners
of securities of the Company  under Section 3(c )(1) of  the Investment  Company
Act of 1940, as amended.

                  (b) GKM is  considered  to be not more than four  persons  for
purposes of  calculating  the number of  beneficial  owners of securities of the
Company under Section 3(c)(1) of the Investment Company Act of 1940, as amended.


                                   ARTICLE III

                REPRESENTATIONS, WARRANTIES AND AGREEMENTS OF USE

         As an inducement  to the Company and the Initial  Members to enter into
this  Agreement and to consummate  the  transactions  contemplated  hereby,  USE
hereby  represents and warrants to, and agrees with, the Company and the Initial
Members as follows:

                                      -15-
<PAGE>

         Section 3.1.  Organization of USE. USE is a Delaware limited  liability
company duly organized,  validly existing and in good standing under the laws of
the State of Delaware.  USE is qualified to do business and in good  standing in
each  jurisdiction  in which the  ownership or leasing of its  properties or the
conduct of its business requires qualification. USE has full power and authority
to own its assets and to carry on its business as now conducted.


         Section  3.2.  Authority  of USE.  USE has  full  legal  right,  power,
capacity  and  authority to execute and deliver  this  Agreement  and all of the
other  agreements  and  instruments   contemplated  hereby,  to  consummate  the
transactions  contemplated  hereby  and  thereby  and to comply  with the terms,
conditions  and  provisions  hereof and  thereof.  The  execution,  delivery and
performance  of this  Agreement by USE has been duly  authorized and approved by
USE and does not require any further  authorization  or consent.  This Agreement
and each other agreement or instrument of USE  contemplated  hereby  constitutes
the legal,  valid and binding  agreement of USE  enforceable in accordance  with
their  respective  terms,  except as  enforcement  may be limited by  applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
enforcement  of creditors'  rights  generally and general  equitable  principles
regardless of whether such  enforceability  is considered in a proceeding at law
or in equity.

         Section  3.3.  No  Violation.   The  execution  and  delivery  of  this
Agreement,  the performance of the obligations hereunder and the consummation by
USE of the transactions  contemplated by this Agreement will not: (i) violate or
conflict with any law,  statute,  ordinance,  rule,  regulation,  decree,  writ,
injunction,   judgment  or  order  of  any  governmental  authority  or  of  any
arbitration  award which is either  applicable  to,  binding upon or enforceable
against  USE;  (ii)  conflict  with,  result in any breach of, or  constitute  a
default  (or an event  which  would,  with the  passage of time or the giving of
notice  or  both,  constitute  a  default)  under,  or give  rise to a right  to
terminate,   amend,  modify,  abandon  or  accelerate,  any  contract  which  is
applicable  to,  binding upon or  enforceable  against USE;  (iii) result in, or
require the creation or  imposition  of, any lien upon or with respect to any of
the  property  or  assets  of  USE;  or  (iv)  require  the  consent,  approval,
authorization  or permit of, or filing with or notification to, any governmental
authority, any court or tribunal or any other Person.

         Section 3.4. No Finder. Other than the obligation of USE to pay $87,500
to SPARK by delivering  14,583 1/3 shares of Common Stock to SPARK for acting as
broker in  connection  with the  transactions  contemplated  by this  Agreement,
neither USE nor any party  acting on its behalf has paid or become  obligated to
pay any fee or  commission  to any  broker,  finder  or  intermediary  for or on
account of the  transactions  contemplated by this Agreement  except to Marathon
Capital LLC.

         Section  3.5.  Access  to  Information.  USE  hereby  acknowledges  and
confirms that it has been provided access to information concerning, among other
things, the business affairs and financial  condition of the Company and had the
opportunity  to ask  questions  of and  receive  information  and  answers  from
officers of the Company respecting, among other things, the business affairs and
financial  conditions  of the  Company.  Such access and  opportunity  shall not
affect  the  representations  and  warranties  of the  Initial  Members  and the
Company.

                                      -16-

<PAGE>

         Section 3.6.      No Litigation. No action, suit, investigation or
proceeding has  been  instituted or  to USE's  knowledge threatened to restrain,
prohibit or otherwise challenge the legality or  validity  of  the  transactions
contemplated hereby.

                  Section  3.7.  Filings  with the SEC.  USE Parent has made all
filings  (collectively  the "Public  Reports")  with the Securities and Exchange
Commission  that it has been  required to make within the past three years under
the  Securities  Act and the  Securities  Exchange Act of 1934,  as amended (the
"Exchange Act"). Each of the Public Reports has complied with the Securities Act
and the Exchange Act in all material respects. None of the Public Reports, as of
their  respective  dates,  contained any untrue  statement of a material fact or
omitted to state a material fact necessary in order to make the statements  made
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.

                  Section 3.8. Financial  Statements.  The consolidated  balance
sheet of USE  Parent  as of  January  31,  2000,  and the  related  consolidated
statements of operations,  stockholders equity and cash flows for the years then
ended,  certified  by Richard  A.  Eisner &  Company,  LLP,  as set forth in USE
Parent's  Annual  Reports on Form 10-Kfor the year ended January 31, 2000,  have
been prepared in accordance with GAAP applied on a consistent  basis  throughout
the periods covered thereby,  and presents fairly the financial condition of the
USE Parent and its  consolidated  subsidiaries  as of the dates  thereof and the
results of their operations for the periods then ended.

                  Section 3.9.  Absence of Certain Changes or Events.  Except as
may be set forth in the Public Reports,  since April 30, 2000 there has not been
any material  adverse change in the business,  assets,  condition  (financial or
other) or results of operations of USE Parent and its  subsidiaries,  taken as a
whole.

                  Section  3.10.  USE  Shares.  The USE  Shares  which are to be
issued to the Company pursuant to this Agreement will, upon the issuance thereof
in accordance  with the terms of this  Agreement,  be duly  authorized,  validly
issued and outstanding, fully paid and nonassessable.

         Section 3.11.     Investment Company Act.  USE is considered to be "one
person" for purposes of calculating  the  number  of  beneficial  owners  of
securities of the Company under Section 3(c )(1) of the Investment Company Act
of 1940, as amended.


                                   ARTICLE IV

                                    COVENANTS


         Section 4.1. Further Assurances; Additional Agreements. At any time and
from  time  to time  hereafter,  each  party  shall  execute  and  deliver  such
additional  instruments  and other documents and shall take such further actions
as may be necessary or appropriate to effectuate,  carry out and comply with all
of the terms of this Agreement and the transactions contemplated hereby.


                                      -17-

<PAGE>

         Section 4.2. Confidentiality;  Publicity.  Except as may be required by
law or as otherwise permitted or expressly  contemplated herein, no party hereto
or its Affiliates,  employees,  agents and representatives shall disclose to any
third party this  Agreement or the subject  matter or terms  hereof  without the
prior  written  consent of the other parties  hereto.  No press release or other
public announcement  related to this Agreement or the transactions  contemplated
hereby shall be issued by any party hereto without the prior written approval of
the other  parties.  The  covenant  described  in this  Section 4.2 shall run in
perpetuity and not be restricted by time or location.

            Section 4.3.  Transfer of USE Shares to Comply with  Securities Act;
Registration Rights. (a) The USE Shares may not be sold or otherwise disposed of
except as follows:  (1) to a person  who,  in the opinion of counsel  reasonably
acceptable  to USE  Parent,  is a person to whom the USE Shares  may  legally be
transferred  without   registration  and  without  the  delivery  of  a  current
prospectus under the Securities Act with respect thereto, and against receipt of
an  agreement  of such  person to comply  with the  obligations  of the  Company
pursuant to this Agreement and the Restated Operating  Agreement with respect to
the USE Shares,  which  agreement  shall be reasonably  satisfactory in form and
substance to USE Parent; or (2) to any person upon delivery of a prospectus then
meeting the  requirements  of the Securities Act relating to such securities and
the offering thereof for such sale or disposition or (3) a sale pursuant to Rule
144 under the Securities Act.

         (b)  USE  shall  cause  USE  Parent  to  cause  to  be  filed  a  shelf
registration statement (the "Registration  Statement") for the resale of the USE
Shares  pursuant  to Rule  415  under  the  Securities  Act  promptly  upon  the
consummation of the transaction described herein; provided the Company furnishes
the  information  specified  in  items  507  and 508 of  Regulation  S-K (or any
successor provisions) under the Securities Act. USE will use its best efforts to
cause such Registration  Statement to become effective promptly thereafter.  The
parties hereto acknowledge that the Registration Statement cannot be filed until
audited  financial  statements  are prepared for the Company's 1999 fiscal year.
USE shall  cause USE Parent to use its best  efforts  to keep such  Registration
Statement  current for a period expiring on the earlier of (i) the date that the
Company  has sold all of the USE Shares or (ii) that date  which is twelve  (12)
months  following the effective  date of the  Registration  Statement;  provided
however, USE Parent shall have the option of suspending the effectiveness of the
Registration  Statement  for  periods  of up to an  aggregate  of 90 days in any
calendar year if the Board of Directors of USE Parent determines that compliance
with the disclosure  obligations  necessary to maintain the effectiveness of the
Registration  Statement  at such time could  reasonably  be  expected  to have a
material adverse effect on USE Parent or a pending corporate  transaction of USE
Parent.

         (c) USE shall bear the entire direct cost and expenses  (including fees
associated  with  listing  such  shares on an exchange  or  automated  quotation
system) of any  registration of the USE Shares  pursuant to this Agreement.  The
Company shall, however, bear the fees of its own counsel and accountants and any
transfer taxes or  underwriting  discounts or commissions  applicable to the USE
Shares  sold by it pursuant  thereto.  USE shall  provide the Company  with such
number of prospectuses and shall qualify such securities in such jurisdiction as
the Company reasonably requests.

                                      -18-

<PAGE>

         Section 4.4. Preparation of Audited Financial  Statements.  The Company
shall  maintain its records in such a manner so that it will be possible for the
Company to prepare (at USE's expense) without  unreasonable  expense or hardship
audited  annual  financial  statements  for  the  Company  for  fiscal  1999  in
accordance with generally accepted  accounting  principles that will comply with
the  requirements  of Regulation S-X. The Company shall cooperate fully with the
independent  auditor and USE,  including by granting them,  their  employees and
agents,  access to such information as they, their employees and agents request,
including access to all of the Company's records and employees, and by providing
representation  letters,  so that  they can  cause  the  preparation  (at  USE's
expense) of audited annual financial  statements for the Company for fiscal 1999
promptly following the Closing. The Company shall prepare at its expense audited
annual  financial  statements for all years  commencing with fiscal 2000,  which
audited  annual  financial  statements  shall be  prepared  in  accordance  with
generally accepted  accounting  principles and will comply with the requirements
of Regulation S-X promulgated by the Securities and Exchange Commission.

                                    ARTICLE V
           SURVIVAL OF REPRESENTATIONS AND WARRANTIES, INDEMNIFICATION


         Section  5.1.   Survival  of   Representations   and  Warranties.   Any
investigation  or  examination by either USE, on the one hand, or the Company or
the Initial Members on the other hand, of the business, or properties or affairs
of the other or others shall not affect the  representations  and  warranties of
such person or persons set forth  herein.  The  representations  and  warranties
herein  made by the  parties  shall be deemed to be  remade at and  survive  the
Closing Date.

         Section  5.2.  Indemnification  by the Company and GKM. The Company and
GKM agree jointly and severally to indemnify and hold USE and its  stockholders,
and their  respective  directors  and  officers,  harmless  from and against all
liability,  loss, cost or expense,  including,  without  limitation,  attorneys'
fees,  expenses and costs of litigation  ("Losses"),  USE and/or any such person
may sustain by reason of any of the following:

                   (a) The inaccuracy of any  representation  or warranty of the
         Company or GKM herein set forth or in any certificate or other document
         delivered  by the  Company or GKM to USE in  accordance  with the terms
         hereof;

                   (b) The breach of any of the  agreements  or covenants of the
         Company or GKM contained herein or in the Current  Operating  Agreement
         or Restated Operating Agreement or in any certificate or other document
         delivered  by the  Company or GKM to USE in  accordance  with the terms
         hereof; and

                                      -19-

<PAGE>

                   (c) Any debts, liabilities or obligations relating to CWM and
         its operations,  including,  without limitation, any debts, liabilities
         or obligations arising out of the Separation Agreement.

         Section 5.3.  Indemnification  by USE. USE agrees to indemnify and hold
the Company and the Initial Members and their respective stockholders,  members,
directors  and  officers  from and against  all Losses  which the Company or the
Initial  Members  and/or  any such  person  may  sustain by reason of any of the
following:

                   (a) The inaccuracy of any  representation  or warranty of USE
         herein set forth or in any  certificate or other document  delivered by
         USE to the Company or either Initial Member; and

                   (b) The breach of any of the  agreements  or covenants of USE
         contained  herein  or in the  Restated  Operating  Agreement  or in any
         certificate  or other  document  delivered by USE to the Company or the
         Initial Members in accordance with the terms hereof.

         Section 5.4 Maximum  Recovery  by USE for Certain  Claims.  The maximum
aggregate  amount  which USE may recover  collectively  from the Company and the
Initial  Members  under Section 5.2 and 5.6 of this  Agreement,  with respect to
inaccuracy  of any  representation  or  warranty or breach of any  agreement  or
covenant  relating to liabilities  which arise from the conduct of the Company's
Business after the closing under this Agreement  shall be $2,800,000;  provided,
however,  the maximum  aggregate amount which USE may recover from KC under this
Agreement shall be $1,500,000; provided, further however, that nothing contained
in this  Section  5.4 will be  construed  to limit the amount of recovery by USE
from the Company or GKM relating to liabilities  which arise from the conduct of
the Company's business prior to Closing.

         Section 5.5 Maximum Recovery by the Company and the Initial Members for
Certain Claims.  The maximum  aggregate amount which the Company and the Initial
Members may recover  collectively  from USE under Section 5.3 of this  Agreement
shall be $2,800,000.

         Section 5.6. Indemnification by KC. KC shall indemnify and hold USE and
its stockholders, and their respective directors and officers, harmless from and
against all  Losses,  USE and/or any such person may sustain by reason of any of
the following:

                   (a) The  inaccuracy of any  representation  or warranty of KC
         herein set forth or in any  certificate or other document  delivered by
         KC to USE in accordance with the terms hereof; and

                   (b) The breach of any of the  agreements  or  covenants of KC
         contained  herein or in the  Current  Operating  Agreement  or Restated
         Operating  Agreement or in any certificate or other document  delivered
         by KC to USE in accordance with the terms hereof.

                                      -20-

<PAGE>

         Section 5.7.  Certain Other Indemnity  Matters.  (a) From and after the
Closing the sole and exclusive remedies of the Company,  the Initial Members and
USE  with  respect  to  any  and  all  claims  relating  the  inaccuracy  of any
representation  or  warranty,  and  breaches of the  agreements  and  covenants,
contained in this Agreement shall be pursuant to the indemnification  provisions
set forth in this Article V. In furtherance of the foregoing,  the Company,  the
Initial Members and USE hereby agree, on their own behalf and on behalf of their
Affiliates,  waive, to the fullest extent  permitted  under  applicable law, and
agree not to assert in any action or proceeding of any kind, any and all rights,
claims  and  causes of action it or such  Affiliate  may now or  hereafter  have
against the other parties  relating to the inaccuracy of any  representation  or
warranty,  and  breach of any  agreement  or  covenant,  other  than  claims for
indemnification  asserted as permitted by and in accordance  with the provisions
set forth in this Section 5.7 (including,  without limitation,  any such rights,
claims or causes of action arising under or based upon common law or other legal
requirements).

         (b) The parties  agree that in no event shall any party hereto have any
claim or cause of action (including, without limitation, any tort claim) arising
from or  relating  to this  Agreement  against  any  Affiliate  (other  than any
signatory  hereto as to its  obligations  hereunder)  of any other party hereto,
including,  without limitation, any claim or cause of action based on any theory
asserting  shareholder  liability of an entity or the "piercing of the corporate
veil" of an entity.

         (c )  Notwithstanding  anything to the contrary  contained  herein,  KC
retains all rights and  remedies  it has under that  certain  Purchase  and Sale
Agreement,  dated as of May 17,  2000,  by and  between  KC and GKM III,  LLC, a
Delaware  limited  liability  company,   and  under  that  certain  Contribution
Agreement  dated as of May 17,  2000,  by and among KC, the  Company and GKM and
nothing  contained  herein or in any other document  executed in connection with
the  transactions  contemplated  hereby shall be  construed to amend,  modify or
waive any of the terms or  provisions  of such  Agreements,  including,  without
limitation, the indemnification provisions of such Agreements.



ARTICLE VI
CLOSING DOCUMENTS


         Section  6.1.  Documents to Be Delivered by the Company and the Initial
Members to USE. The Company and the Initial  Members  agree to deliver to USE on
the Closing Date the following:

                   (a) Certificates of as to Certain Documents.  Certificates of
         the  authorized  executive  officers  of the  Company  and the  Initial
         Members dated the Closing Date with respect to (i) the  Certificate  of
         Formation of the Company,  (ii) the Operating Agreement of the Company,
         (iii) the resolutions authorizing the transactions contemplated hereby,
         and (iv) the  incumbency  of certain  officers  of the  Company and the

                                      -21-
<PAGE>

         Initial  Members and the specimen  signatures of those  officers of the
         Company and the Initial Members executing documents.

                   (b) Certificate of Formation.  Certificate of Formation,  and
         all amendments  thereto,  of the Company  certified by the Secretary of
         State of  Delaware as of a date not more than thirty (30) days prior to
         the Closing Date.

                   (c) Good Standing Certificates. Certificates of good standing
         for the Company  issued by the  Secretary  of State of Delaware and the
         Secretary  of State of  Illinois  dated not more than  thirty (30) days
         prior to the Closing Date.

                   (d) Lien  Search.  Good and  sufficient  evidence  reasonably
         satisfactory  to counsel  for USE that there are no chattel  mortgages,
         security  interests,  judgments,  claims  or  other  liens  outstanding
         against any of the assets of the Company.

                   (e)     Counsel  Opinion.  Opinion of counsel for the Company
                           and GKM and  opinion of counsel for KC, in each case
                           addressed  to USE,  dated the Closing  Date,  to the
                           effect set forth in Annex B and hereby made a part
                           hereof;

                   (f)     Restated  Operating  Agreement.   The  Restated
                           Operating  Agreement executed by the Initial Members.

                   (g) Consent to Issuance.  All consents of third parties which
         are  necessary,  in the opinion of USE,  to  effectively  transfer  the
         Interest  in the manner  provided  for  herein,  in form and  substance
         satisfactory  to said counsel  unless waived in writing by USE. (h) USE
         Parent  Agreement.The  letter  agreement  by and among USE Parent,  the
         Company  and  the  Initial   Members   (the  "USE  Parent   Agreement")
         substantially  in the form of Annex C executed  by the  Company and the
         Initial Members.

                   (i)     Other  Documents.  Such other documents and showings
as shall  reasonably be required by USE and its counsel.

         Section 6.2. Documents to Be Delivered by USE. USE agrees to deliver to
the Company and the Initial Members on the Closing Date the following:

                   (a) Certificate of Secretarial Officer of USE. Certificate of
         the  authorized  executive  officers of USE dated the Closing Date with
         respect to (i) the  certificate of formation of USE, (ii) the Operating
         Agreement  of  USE,  (iii)  resolutions  authorizing  the  transactions
         contemplated hereby, and (iv) the incumbency of certain officers of USE
         and the specimen signatures of those officers executing documents.

                   (b) Counsel's  Opinion.  Opinion of counsel for USE addressed
         to the Company and the Initial  Members  dated the Closing  Date in the
         form attached hereto as Annex D and hereby made a part hereof.


                                      -22-
<PAGE>

                   (c)     Restated Operating Agreement.  The Restated Operating
         Agreement executed by USE.

                   (d) Purchase Price.  The USE Shares to the Company and 14,583
         1/3 shares of Common Stock to SPARK pursuant to Section 1.1 hereof.

                  (e)      Broker's Fee.    14,583 1/3 shares of Common Stock to
          SPARK pursuant to Section 3.4 hereof.

                   (f) USE Parent Agreement.  The USE Parent Agreement  executed
          by USE Parent.


                  (g) Other  Documents.  Such other  documents  and  showings as
         shall reasonably be required by the Company and the Initial Members and
         their counsel.


                                   ARTICLE VII

                               GENERAL PROVISIONS

         Section 7.1. Arm's Length Negotiations. Each party expressly represents
and warrants to the other party that: (a) before  executing this Agreement,  the
party has fully informed itself of the terms,  contents,  conditions and effects
of this  Agreement;  (b) the party has relied solely and completely upon its own
judgment in executing this  Agreement;  (c) the party has had the opportunity to
seek and has obtained the advice of counsel before executing this Agreement; (d)
the party  has acted  voluntarily  and of its own free  will in  executing  this
Agreement;  (e) the  party is not  acting  under  duress,  whether  economic  or
physical,  in executing this Agreement;  and (f) this Agreement is the result of
arm's  length  negotiations  conducted  by  and  among  the  parties  and  their
respective counsel.

         Section 7.2. Execution in Counterparts.  This Agreement may be executed
in one or more  counterparts,  each of which  shall be  considered  an  original
instrument, but all of which shall be considered one and the same agreement, and
shall become binding when one or more  counterparts  have been signed by each of
the parties and delivered to the Company, the Initial Members and USE.

         Section 7.3.      Expenses.  Each party shall pay its own fees and
expenses, including the costs of any attorneys or consultants engaged by it,
incurred in connection with the negotiation, execution and delivery of this
Agreement or any transaction contemplated hereby.

         Section 7.4. Assignment,  Binding Effect. This Agreement shall bind and
inure  to  the   benefit  of  the   parties   hereto,   its  heirs,   executors,
administrators, successors and permitted assigns. No party may assign its rights
or delegate  its  obligations  under this  Agreement  without the prior  written
consent of each of the other parties hereto.

                                      -23-
<PAGE>

         Section 7.5.      Section Headings. The Section headings herein have
been inserted for convenience of reference only, and shall in no way  modify or
restrict any of the terms or provisions hereof.

         Section 7.6. Unenforceability;  Severability.  If any provision of this
Agreement  shall for any reason be held  unenforceable,  such  provision  to the
extent  enforceable  shall be severed from this Agreement unless, as a result of
such severance,  the Agreement fails to reflect the basic intent of the parties.
If the Agreement continues to reflect the basic intent of the parties,  then the
invalidity of such specific provision shall not affect the enforceability of any
other provision herein, and the remaining  provisions shall remain in full force
and effect.  If any covenant or restriction  contained herein is determined by a
court of law to be overly broad, thereby making the covenant unenforceable,  the
parties hereto agree, and it is their desire, that such court shall substitute a
judicially  enforceable  limitation  in its place,  and that as so modified  the
covenant shall be binding upon the parties as if originally set forth herein.

         Section 7.7.    Recitals.  The  Recitals  set forth  above are hereby
incorporated  in and made a part of this Agreement by this reference.

         Section 7.8.    Termination.  This Agreement may be terminated before
the Closing Date:

                   (a)     by  mutual  written  consent  of  all of the parties
          hereto;

                   (b) by USE in the event of a material  breach by the  Company
         or the Initial Members of any provision of this Agreement;

                   (c)     by the  Company  in the  event of a  material breach
by USE of any provision of this Agreement;

                   (d)     by USE if any of the conditions  set forth in Section
6.1  shall not have been satisfied or waived; or

                   (e) by the  Company  and the  Initial  Members  if any of the
         conditions  set forth in Section 6.2 shall not have been  satisfied  or
         waived.

         Section 7.9.  Waivers;  Amendment.  This Agreement may not be modified,
amended,  supplemented,  canceled or  discharged,  except by written  instrument
executed by all parties. No failure to exercise, and no delay in exercising, any
right,  power or privilege under this Agreement  shall operate as a waiver,  nor
shall any single or partial exercise of any right, power or privilege  hereunder
preclude the exercise of any other right,  power or privilege.  No waiver of any
breach of any  provision  shall be deemed  to be a waiver  of any  preceding  or
succeeding  breach of the same or any other  provision,  nor shall any waiver be
implied from any course of dealing between the parties. No extension of time for
performance  of any  obligations  or other  acts  hereunder  or under  any other
agreement  shall be deemed to be an extension of the time for performance of any
other  obligations  or any other  acts.  The rights and  remedies of the parties
under this Agreement are subject to Article V hereof; provided, however, that in
addition  to the rights and  remedies  provided  by such  Article V, the parties
shall be entitled to  equitable  relief  except for any claim or cause of action

                                      -24-
<PAGE>

(including, without limitation, any tort claim) arising from or relating to this
Agreement  against  any  Affiliate  (other than any  signatory  hereto as to its
obligations hereunder) of any other party hereto, including, without limitation,
any claim or cause of action based on any theory asserting shareholder liability
of an entity or the "piercing of the corporate veil" of an entity.

         Section 7.10. Notices.  All notices,  claims,  certificates,  requests,
demands  and other  communications  hereunder  shall be in writing  and shall be
deemed  to  have  been  duly  given  if  personally  delivered  or  if  sent  by
nationally-recognized  overnight  courier,  by  telecopy,  or by  registered  or
certified  mail,  return  receipt  requested and postage  prepaid,  addressed as
follows:

         If to the Company or GKM:

                  GKM II Corporation
                  900 West Jackson Blvd.
                  Suite 7E
                  Chicago, IL  60607
                  Attn:  Ethan G. Kahn

         with a copy to:

                  Michael J. Choate, Esq.
                  Shefsky & Froelich Ltd.
                  444 North Michigan Ave.
                  Suite 2500
                  Chicago, IL  60611

         If to KC:

                  Kemper-Castlebridge, Inc.
                  c/o Kemper Casualty Inc.
                  One World Trade Center, 35th Floor
                  New York, NY  10048
                  Attn:  Arthur E. Chandler, Chief Financial Officer

         with a copy to:

                  Mark Musser, Assistant General Counsel
                  Kemper Casualty Inc.
                  155 Village Blvd., Suite 300
                  Princeton, NJ  08540

         If to USE:

                  U.S. Energy Castlebridge LLC
                  C/o U.S. Energy Inc.
                  515 N. Flagler Drive
                  Suite 702
                  West Palm Beach, Florida 33401
                  Attn: Chief Operating Officer


                                      -25-

<PAGE>

         With a copy to:

                  Allen J. Rothman, Esq.
                  Robinson Brog Leinwand
                           Greene Genovese & Gluck P.C.
                  1345 Avenue of the Americas
                  New York, New York 10105


or to such other  address as any party  hereto to whom notice is to be given may
have  furnished to the other parties  hereto in writing in accordance  herewith.
Any such  notice or  communication  shall be deemed to have been  delivered  and
received  (i) in the case of personal  delivery,  on the date of such  delivery,
(ii)  in the  case  of  nationally-recognized  overnight  courier,  on the  next
business  day  after  the  date  when  sent,  (iii)  in  the  case  of  telecopy
transmission  when  received,  and (iv) in the  case of  mailing,  on the  third
business  day  following  that  on  which  the  piece  of mail  containing  such
communication is posted.

                                      -26-

<PAGE>


         Section 7.11.     Governing  Law. This  Agreement  shall be governed by
and  construed in accordance  with the internal laws (without regard to any
conflict of laws principles) of the State of Illinois.

      IN WITNESS  WHEREOF,  the parties  hereto have caused this Agreement to be
executed as of the day and year first written above.


                         GKM II CORPORATION

                         By: /s/ Ethan Kahn
                                 ------------------
                                 Name: Ethan Kahn
                                 Title: Secretary


                         CASTLEBRIDGE PARTNERS, LLC

                         By: /s/ Paul Murray
                                 -------------------
                                 Name: Paul Murray
                                 Title: President


                          KEMPER -CASTLEBRIDGE, INC.

                          By: /s/James Meehan
                                 --------------------
                                 Name: James Meehan
                                 Title: Secretary

                          U.S. ENERGY SYSTEMS
                          CASTLEBRIDGE LLC

                          By: /s/ Goren Mornhed
                                  -------------------
                                  Name: Goran Mornhed
                                  Title:   President

                                      -27-


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