PSI ENERGY INC
11-K, 1998-06-25
ELECTRIC SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549





                                    FORM 11-K

                                  ANNUAL REPORT





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




                   For the fiscal year ended December 31, 1997
                         Commission File Number 1-11377



A.   Full title of the Plan:

              PSI ENERGY, INC. UNION EMPLOYEES' 401(k) SAVINGS PLAN

B.   Name of issuer of the securities  held pursuant to the Plan and the address
     of its principal executive office:


                                  Cinergy Corp.

                             139 East Fourth Street

                          Cincinnati, Ohio 45202 - 4003

<PAGE>






                                PSI Energy, Inc.
                      Union Employees' 401(k) Savings Plan

                        FINANCIAL STATEMENTS AND EXHIBITS

                                                                        Page No.
(a)      Financial Statements
         Report of Independent Public Accountants                          3
         Statement of Net Assets Available for Benefits, with
           Fund Information, as of December 31, 1997                       4
         Statement of Net Assets Available for Benefits, with
           Fund Information, as of December 31, 1996                       5
         Statement of Changes in Net Assets Available for Benefits,
           with Fund Information, for the Year Ended December 31, 1997     6
         Notes to Financial Statements                                    7-10
         Financial Statement Schedules (As Required By The Employee
           Retirement Income Security Act)
             Schedule I - Schedule of Assets Held for Investment 
               Purposes - December 31, 1997                               11
             Schedule II - Schedule of Reportable Transactions for 
               the year ended December 31, 1997                           12

(b)      Exhibit
         23)      Consent of Independent Public Accountants

<PAGE>


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Plan  Administrator  of the PSI  Energy,  Inc.  Union  Employees'  401(k)
Savings Plan:

We  have  audited  the  accompanying  statements  of net  assets  available  for
benefits, with fund information, of the PSI ENERGY, INC. UNION EMPLOYEES' 401(k)
SAVINGS  PLAN as of December  31, 1997 and 1996,  and the related  statement  of
changes in net assets  available for benefits,  with fund  information,  for the
year ended  December 31, 1997.  These  financial  statements  and the  schedules
referred  to  below  are  the  responsibility  of  the  Plan's  management.  Our
responsibility  is to  express  an opinion  on these  financial  statements  and
schedules based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the net  assets  available  for  benefits,  with  fund
information,  of the Plan as of December  31, 1997 and 1996,  and the changes in
net assets  available for benefits,  with fund  information,  for the year ended
December 31, 1997 in conformity with generally accepted accounting principles.

Our audits  were  performed  for the  purpose of forming an opinion on the basic
financial  statements taken as a whole. The supplemental  schedules (Schedules I
and II) are  presented  for the  purpose of  additional  analysis  and are not a
required  part  of  the  basic  financial   statements  but  are   supplementary
information  required by the  Department  of Labor's Rules and  Regulations  for
Reporting and Disclosure  under the Employee  Retirement  Income Security Act of
1974.  The fund  information  in the  statements  of net  assets  available  for
benefits and the  statement of changes in net assets  available  for benefits is
presented  for purposes of  additional  analysis  rather than to present the net
assets  available for benefits and changes in net assets  available for benefits
of each  fund.  The  supplemental  schedules  and  fund  information  have  been
subjected  to the  auditing  procedures  applied  in  the  audits  of the  basic
financial  statements  and, in our  opinion,  are fairly  stated in all material
respects in relation to the basic financial statements taken as a whole.






                                                             ARTHUR ANDERSEN LLP




Cincinnati, Ohio
June 22, 1998


<PAGE>

<TABLE>
<CAPTION>

              PSI Energy, Inc. Union Employees' 401(k) Savings Plan
      Statement of Net Assets Available for Benefits, with Fund Information
                             As of December 31, 1997



                                                                                                                               
                                                                                                                               
                                                                Participant Directed                         

                                                                                                                                 
<S>                         <C>              <C>              <C>              <C>              <C>               <C>
                                               Fidelity        Fidelity                                             Fidelity   
                               Fidelity        Equity-           Asset          Fidelity         Fidelity         Diversified   
                               Magellan         Income          Manager        U.S. Bond        Low-Priced        International 
                                 Fund            Fund            Fund          Index Fund       Stock Fund            Fund      
ASSETS
Investments, at fair
  value:
Shares of registered
  investment companies      $13,562,482      $8,262,065       $3,364,616        $550,494         $375,042          $205,951       
Common stock                          -               -                -               -                -                 -   
Participant loans                     -               -                -               -                -                 -    
    Total investments        13,562,482       8,262,065        3,364,616         550,494          375,042           205,951      
Receivables:
Employer's
  contribution                        -               -                -               -                -                 -    
Participants'
  contributions                  71,400          42,024           17,923           3,953            5,001             2,141    
     Total receivables           71,400          42,024           17,923           3,953            5,001             2,141     

Net assets available
  for benefits              $13,633,882      $8,304,089       $3,382,539        $554,447         $380,043          $208,092      
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

              PSI Energy, Inc. Union Employees' 401(k) Savings Plan
 Statement of Net Assets Available for Benefits, with Fund Information (Continued)
                             As of December 31, 1997

<S>                                   <C>             <C>             <C>              <C>                <C>  
                                                                                            Non-
                                                                                        Participant
                                                     Participant Directed                 Directed

                                       Fidelity
                                      Retirement
                                        Money           Cinergy                            Cinergy
                                        Market           Common         Participant        Common
                                        Fund           Stock Fund        Loan Fund       Stock Fund          Total
ASSETS
Investments, at fair
  value:
Shares of registered
  investment companies                $4,774,242      $         -     $           -       $      -        $31,094,892
Common stock                                   -       14,534,109                 -     17,147,871         31,681,980
Participant loans                              -                -         2,490,292              -          2,490,292
    Total investments                  4,774,242       14,534,109         2,490,292     17,147,871         65,267,164
Receivables:
Employer's
  contribution                                 -                -                 -         62,736             62,736
Participants'
  contributions                           22,832          213,208                 -              -            378,482
     Total receivables                    22,832          213,208                 -         62,736            441,218

Net assets available
  for benefits                        $4,797,074      $14,747,317        $2,490,292    $17,210,607        $65,708,382

<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

             PSI Energy, Inc. Union Employees' 401(k) Savings Plan
      Statement of Net Assets Available for Benefits, with Fund Information
                             As of December 31, 1996



                                                                                                                                 
                                                                                                                                 
                                                                        Participant Directed                      
<S>                                             <C>              <C>             <C>              <C>              <C>  
                                                                                                                    Fidelity
                                                                   Fidelity       Fidelity                         Retirement
                                                  Fidelity         Equity-          Asset          Fidelity          Money      
                                                  Magellan          Income         Manager        U.S. Bond          Market     
                                                    Fund             Fund           Fund          Index Fund          Fund        
ASSETS
Investments, at fair value:
Shares of registered investment
  companies                                     $9,893,011       $5,550,284      $2,486,637        $411,730         $4,575,631    
Common Stock                                             -                -               -               -                  -     
Participant Loans                                        -                -               -               -                  -     
     Total investments                           9,893,011        5,550,284       2,486,637         411,730          4,575,631  
Receivables:
Employer's Contribution                                  -                -               -               -                  -   
Participants' Contributions                         65,642           33,864          17,889           3,854             20,435    
     Total receivables                              65,642           33,864          17,889           3,854             20,435   

Net assets available for benefits               $9,958,653       $5,584,148      $2,504,526        $415,584         $4,596,066  

</TABLE>

<PAGE>

<TABLE>
<CAPTION>

             PSI Energy, Inc. Union Employees' 401(k) Savings Plan
 Statement of Net Assets Available for Benefits, with Fund Information (Continued)
                             As of December 31, 1996



                                                                                     Non-  
                                                                                  Participant  
                                                     Participant Directed           Directed  
<S>                                             <C>               <C>              <C>               <C>  
                                             
                                           
                                                  Cinergy                           Cinergy
                                                  Common         Participant         Common
                                                Stock Fund        Loan Fund        Stock Fund          Total
ASSETS
Investments, at fair value:
Shares of registered investment
  companies                                      $         -       $        -       $         -      $22,917,293
Common Stock                                      12,197,142                -        12,851,674       25,048,816
Participant Loans                                          -         1,819,836                -        1,819,836
     Total investments                            12,197,142         1,819,836       12,851,674       49,785,945
Receivables:
Employer's Contribution                                    -                 -          638,714          638,714
Participants' Contributions                           23,617                 -                -          165,301
     Total receivables                                23,617                 -          638,714          804,015

Net assets available for benefits                $12,220,759        $1,819,836      $13,490,388      $50,589,960

<FN>
The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

              PSI Energy, Inc. Union Employees' 401(k) Savings Plan
 Statement of Changes in Net Assets Available for Benefits, with Fund Information
                      For the Year Ended December 31, 1997


                                                                                                                           
                                                                                                                          
                                                                    Participant Directed                               
<S>                         <C>                 <C>            <C>              <C>               <C>            <C>
                                                                                                  Fidelity                    
                                                Fidelity        Fidelity                            Low-           Fidelity    
                               Fidelity         Equity-           Asset          Fidelity          Priced        Diversified     
                               Magellan          Income          Manager         U.S. Bond         Stock         International    
                                 Fund             Fund            Fund          Index Fund          Fund             Fund        
Additions to net
  assets:
Investment income:
  Net appreciation
    (depreciation) in fair
    value of investments    $1,873,609        $1,364,710       $  291,975        $10,993           $(2,091)       $(9,630)        
  Interest                           -                 -                -              -                 -              -       
  Dividends                    854,909           436,829          287,220         32,303            15,494          6,331       
                             2,728,518         1,801,539          579,195         43,296            13,403         (3,299)       
Contributions:
    Participants'            1,882,034         1,081,412          493,399        101,510            41,003         21,358        
    Employer's                       -                 -                -              -                 -              -        
                             1,882,034         1,081,412          493,399        101,510            41,003         21,358       
Total Additions              4,610,552         2,882,951        1,072,594        144,806            54,406         18,059         

Deductions from net
  assets:
  Benefits paid to
    participants               356,262           451,895          153,162         10,632                35             -          
Total Deductions               356,262           451,895          153,162         10,632                35             -          

Net increase/
  (decrease) prior to 
  transfers                  4,254,290         2,431,056          919,432        134,174            54,371         18,059         
Interfund transfers           (587,492)          267,971          (35,805)         5,373           325,672        190,033          
Interplan transfers              8,431            20,914           (5,614)          (684)                -              -         

Net increase/
  (decrease)                 3,675,229         2,719,941          878,013        138,863           380,043        208,092         
Net assets available
    for benefits:
  Beginning of year          9,958,653         5,584,148        2,504,526        415,584                 -              -         

  End of year              $13,633,882        $8,304,089       $3,382,539       $554,447          $380,043       $208,092      
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

              PSI Energy, Inc. Union Employees' 401(k) Savings Plan
 Statement of Changes in Net Assets Available for Benefits, with Fund Information (Continued)
                      For the Year Ended December 31, 1997

<S>                                 <C>              <C>              <C>                <C>                <C>
                                                                                            Non-
                                                                                         Participant
                                                    Participant Directed                   Directed             

                                      Fidelity
                                     Retirement
                                       Money           Cinergy                             Cinergy
                                       Market           Common         Participant          Common
                                       Fund           Stock Fund        Loan Fund         Stock Fund          Total
Additions to net
  assets:
Investment income:
  Net appreciation
    (depreciation) in fair
    value of investments              $      -        $1,987,343        $      -          $2,258,821        $ 7,775,730
  Interest                                   -                           170,597                   -            170,597
  Dividends                            252,217           659,110               -             740,256          3,284,669
                                       252,217         2,646,453         170,597           2,999,077         11,230,996
Contributions:
    Participants'                      651,880           861,719               -                   -          5,134,315
    Employer's                               -                 -               -           1,479,272          1,479,272
                                       651,880           861,719               -           1,479,272          6,613,587
Total Additions                        904,097         3,508,172         170,597           4,478,349         17,844,588

Deductions from net
  assets:
  Benefits paid to
    participants                       471,976           722,826          76,577             491,750          2,735,115
Total Deductions                       471,976           722,826          76,577             491,750          2,735,115

Net increase/
  (decrease) prior to 
  transfers                            432,121         2,785,346          94,020           3,986,599         15,109,468
Interfund transfers                   (255,096)         (211,634)        579,265            (278,287)                 -
Interplan transfers                     23,983           (47,154)         (2,829)             11,907              8,954

Net increase/
  (decrease)                           201,008         2,526,558         670,456           3,720,219         15,118,422
Net assets available
    for benefits:
  Beginning of year                  4,596,066        12,220,759       1,819,836          13,490,388         50,589,960

  End of year                       $4,797,074       $14,747,317      $2,490,292         $17,210,607        $65,708,382

<FN>
The accompanying notes are an integral part of these financial statements.
</FN>

</TABLE>

<PAGE>

                                PSI ENERGY, INC.
                      UNION EMPLOYEES' 401(k) SAVINGS PLAN

                          NOTES TO FINANCIAL STATEMENTS


(1)  Plan  Description--  The PSI Energy,  Inc. Union Employees'  401(k) Savings
     Plan (Plan) is a defined  contribution plan covering union employees of PSI
     Energy,  Inc. (PSI)(a subsidiary of Cinergy Corp.) who meet minimum age and
     service  requirements.  The  Plan  is  administered  by  the  PSI  Benefits
     Committee and trusteed by the Fidelity  Management Trust Company.  The Plan
     is subject to the provisions of the Employee Retirement Income Security Act
     of 1974 (ERISA).  The administrative  expenses of the Plan are paid by PSI.
     Reference  should  be  made  to  the  Plan  document  for a  more  complete
     description of the Plan's provisions.

     Under the Plan,  participants  may  contribute  up to 15% of annual  pretax
     compensation,  as defined in the Plan. In addition,  a participant may make
     optional  contributions  to the  Plan  which,  when  combined  with  salary
     deferrals,  may not exceed 15% of base pay.  Salary  deferrals and optional
     contributions are subject to certain limitations.  The salary deferrals and
     optional  contributions  are invested by the  trustee,  as directed by each
     participant,  in one or more investment funds, including the Cinergy Common
     Stock Fund.

     The  participant's  employer  contributes  60% of the first 5% of base pay,
     contributed by each participant. An additional incentive match of up to 40%
     of  the  first  5% of  base  pay  that  a  participant  contributes  may be
     contributed  at the discretion of the  employer's  board of directors.  For
     those employees who do not contribute to the Plan, the employer contributes
     an incentive match assuming the participant contributed 1% of base pay. All
     employer  contributions  must be  invested  by the  trustee in the  Cinergy
     Common Stock Fund.  The employer  contributions  must remain in the Cinergy
     Common Stock Fund until the participant reaches age 50 and are shown on the
     statement  of  net  assets  available  for  benefits  as   "Non-Participant
     Directed"  funds until the employee elects to transfer the funds to another
     investment option. Participants are immediately vested in all contributions
     and earnings thereon.

     Participants are generally eligible to receive distributions of assets from
     the Plan upon termination of employment (including  retirement),  death, or
     disability.  Distributions  are paid in a lump sum for vested  benefits  of
     $3,500 or less.  Distributions  are paid in a lump sum or up to ten  annual
     installments  (at the  election  of the  participant)  for vested  benefits
     greater than $3,500.  Active participants are also eligible to apply to the
     Plan  administrator  for "hardship"  withdrawals from their salary deferral
     account in accordance with Plan provisions.

     Subject to certain  limitations,  employees  may apply for loans from their
     salary  deferral  account  balances.   Such  loans  are  reflected  in  the
     Participant Loan Fund in the accompanying financial statements. Interest on
     the loans is set at the prime rate plus 1/2% at the time of  borrowing  and
     are secured by the balance in the participant's  account.  Loans are repaid
     within 54 months through regular payroll deductions.

<PAGE>

(2)  Significant Accounting  Policies--The  financial statements of the Plan are
     prepared under the accrual method of accounting.

     Investments  are  stated at fair  value.  Shares of  registered  investment
     companies are valued at quoted market prices which  represent the net asset
     value of  shares  held by the Plan at  year-end.  Cinergy  common  stock is
     valued at its quoted  market price.  Participant  loans are valued at cost,
     which approximates market.

     Purchases  and sales of  securities  are  recorded on a  trade-date  basis.
     Interest income is recorded on the accrual basis. Dividends are recorded on
     the ex-dividend date. Benefits are recorded when paid.

     Transfers of assets  between the Plan and the PSI Energy,  Inc.  Employees'
     401(k) Savings Plan occur as a result of changes in employee status between
     the union  classification  and the exempt and  non-exempt  classifications.
     Such  transfers  are  reflected as interplan  transfers on the statement of
     changes in net assets available for benefits.

     The  preparation  of financial  statements  in  conformity  with  generally
     accepted  accounting  principles  requires management to make estimates and
     assumptions  that affect the reported amounts of assets and liabilities and
     disclosure  of  contingent  assets  and  liabilities  at  the  date  of the
     financial  statements  and the  reported  amounts of revenues  and expenses
     during  the  reporting  period.  Actual  results  could  differ  from those
     estimates.


(3)  Investment Options-

     The investment options of the Plan are as follows:

     Participant contributions - Upon enrollment or re-enrollment,  participants
     direct that their contributions,  including any rollover contributions,  be
     invested in one or more of the following investment options:

     - Fidelity Magellan Fund

     The Fidelity Magellan Fund invests mainly in equity securities of domestic,
     foreign,  and  multinational  issuers of all sizes that offer potential for
     growth with the principal purpose of seeking maximum appreciation in value.

     - Fidelity Equity-Income Fund

     The Fidelity  Equity-Income  Fund invests mainly in income producing equity
     securities with the principal  purpose of earning  reasonable  income while
     considering the potential for capital appreciation.

     - Fidelity Asset Manager Fund

     The Fidelity  Asset Manager Fund invests in equities,  bonds and short-term
     instruments  or mutual funds,  both domestic and foreign with the principal
     purpose of seeking high total return while reducing risk.

     - Fidelity U.S. Bond Index Fund

     The  Fidelity  U.S.  Bond Index Fund  invests in  securities  that  include
     obligations   of  the   U.S.   Treasury,   U.S.   Agencies,   corporations,
     mortgage-backed  obligations,  and U.S.  dollar-denominated  obligations of
     foreign  governments  with the principal  purpose of seeking current income
     consistent with the preservation of capital.

     -    Fidelity Diversified International Fund

     The Fidelity Diversified  International Fund invests primarily in stocks of
     companies  located outside the U.S. that are included in the Morgan Stanley
     EAFE(R)  index with the  principal  purpose of seeking  out stocks that are
     undervalued compared to industry norms in their countries.

     - Fidelity Low-Priced Stock Fund

     The  Fidelity  Low-Priced  Stock Fund  invests  primarily  in the stocks of
     companies that the fund manager considers  undervalued or out of favor with
     other investors and that could offer the possibility for significant growth
     with the principal  purpose of seeking out stocks of smaller companies with
     per share prices of $25 or less.

     - Fidelity Retirement Money Market Fund

     The Fidelity  Retirement  Money  Market Fund invests in high quality  money
     market  instruments  including  certificates of deposit,  commercial paper,
     short-term   corporate  and  U.S.   Government   obligations  and  bankers'
     acceptances  issued by major banks. The purpose of the Fund is to seek high
     money market yields while maintaining preservation of capital.

     - Cinergy Common Stock Fund

     The Cinergy Common Stock Fund invests in common stock of Cinergy Corp.


(4)  Federal Income Tax Status--The  Internal Revenue Service has determined and
     informed  the Plan by letter dated  November  14,  1995,  that the Plan and
     related trust are designed in accordance  with  applicable  sections of the
     Internal  Revenue Code (IRC). The Plan has been amended since receiving the
     determination letter.  However, the Plan administrator and the Plan's legal
     counsel  believe the Plan is designed and is being  operated in  compliance
     with the applicable provisions of the IRC.

(5)  Investments--A  participant may elect or change investment funds and/or the
     contribution allocation percentages among funds at any time.

     The  following  investments  exceed 5% of total net  assets  available  for
     benefits at December 31, 1997 and 1996:

                                                     1997                1996

     Fidelity Magellan Fund                      $13,562,482          $9,893,011
     Fidelity Equity-Income Fund                   8,262,065           5,550,284
     Fidelity Asset Manager Fund                   3,364,616                   *
     Fidelity Retirement Money Market Fund         4,774,242           4,575,631
     Cinergy Common Stock                         31,681,980          25,048,816

     *  Less than 5%  



(6)  Plan  Termination--Although  it has not  expressed any intent to do so, PSI
     has the right under the Plan to discontinue its  contributions  at any time
     and to terminate the Plan subject to the provisions of ERISA.


<PAGE>

<TABLE>
<CAPTION>

                                                                                                                          SCHEDULE I
                                PSI ENERGY, INC.
                      UNION EMPLOYEES' 401(k) SAVINGS PLAN
            ITEM 27a--SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES
                                December 31, 1997



<S>                                           <C>                                                     <C>              <C>    
Identity of Issuer, Borrower,                 Description of Investment, Including Maturity Date,
Lessor, or Similar Party                      Rate of Interest, Collateral, and Par or Maturity Value    Cost          Current Value

*      Cinergy Corp.                          Common Stock                                            $20,024,991       $31,681,980
*      Fidelity Investments                   Magellan Fund                                            11,015,208        13,562,482
*      Fidelity Investments                   Equity-Income Fund                                        6,043,360         8,262,065
*      Fidelity Investments                   Asset Manager Fund                                        2,950,634         3,364,616
*      Fidelity Investments                   U.S. Bond Index Fund                                        542,384           550,494
*      Fidelity Investments                   Low-Priced Stock Fund                                       377,116           375,042
*      Fidelity Investments                   Diversified International Stock Fund                        215,459           205,951
*      Fidelity Investments                   Retirement Money Market Fund                              4,774,242         4,774,242
*      Various plan participants              Participant loans (interest rates ranging 
                                                from 5.25-9%)                                           2,490,292         2,490,292
        Total assets held for investment 
          purposes                                                                                    $48,433,686       $65,267,164

<FN>
*      Denotes a party-in-interest

The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                                                                     SCHEDULE II

                                PSI ENERGY, INC.
                      UNION EMPLOYEES' 401(K) SAVINGS PLAN

                                 EIN: 35-0594457
                                Plan Number: 101

                 Item 27d - Schedule of Reportable Transactions
                      For the Year Ended December 31, 1997


<S>                                       <C>                  <C>             <C>               <C>  
                                            Total                Total
                                          Number of            Number of        Purchase         Selling Price         Net Gain on
       Identity of Securities             Purchases              Sales          Price (A)             (A)                 Sales

Cinergy Corp. Common Stock                   180                  155          $5,108,709          $2,518,797           $736,544
  Fund

Fidelity Magellan Fund                       194                  154           3,793,446           2,007,605            303,923

Fidelity Equity-Income                       179                  128           2,665,971           1,325,571            323,299

Fidelity Asset Manager                       115                   68           1,069,433             483,363             58,646

Fidelity Retirement Money                    139                  127           1,455,585           1,256,974                  -
  Market Fund


<FN>
(A)  The current value of all assets acquired or disposed of, at the time of the
     acquisition  or  disposition,  is equal to the  purchase  price or  selling
     price, respectively.
</FN>
</TABLE>

<PAGE>


                                   SIGNATURES

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


Date:  June 22, 1998

              PSI ENERGY, INC. UNION EMPLOYEES' 401(k) SAVINGS PLAN
                                   (The Plan)

                               /s/Jerry W. Liggett
                               (Jerry W. Liggett,
                               Plan Administrator)

<PAGE>


                                                                      EXHIBIT 23






                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS




            As  independent  public  accountants,   we  hereby  consent  to  the
incorporation  by reference  of our report  dated June 22, 1998  included in the
Annual  Report  on Form 11-K for the year  ended  December  31,  1997 of the PSI
Energy,  Inc.  Union  Employees'  401(k)  Savings  Plan,  into  Cinergy  Corp.'s
previously filed Registration Statement File No. 33-56067.




                                                             ARTHUR ANDERSEN LLP

Cincinnati, Ohio
June 22, 1998




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