SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C.  20549

In the Matter of                                CERTICIATE
Cinergy Corp. et al.                            OF
File No.  70-8933                               NOTIFICATION

(Public Utility Holding Company Act of 1935)

     With reference to the transactions (a) proposed in the
Application-Declaration on Form U-1, as amended, in the above docket filed
by Cinergy Corp. ("Cinergy"), a Delaware corporation and registered holding
company under the Public Utility Holding Company Act of 1935 (the "Act"),
Cinergy Investments, Inc., a Delaware corporation and direct, wholly-owned
nonutility subsidiary of Cinergy ("Cinergy Investments"), and Cinergy
Services, Inc., a Delaware corporation and direct, wholly-owned service
company subsidiary of Cinergy ("Cinergy Services") and (b) authorized by
the Commission in its order dated February 7, 1997, Rel. No. 35-26662,
Cinergy Services hereby provides the following information:

1.   The following summary, covering the quarterly period ended June 30,
     1999 ("Second Quarter 1999"), updates the business activities of
     Cinergy Solutions, Inc. ("Cinergy Solutions"), a Delaware corporation
     and direct, wholly-owned nonutility subsidiary of Cinergy Investments,
     as previously reported in this file:

     a.   Energy Management Services.  Cinergy Solutions did not market any
          energy management services in the Second Quarter 1999.

     b.   Asset Management Services.  As previously reported, Cinergy
          Solutions no longer directly markets large and small asset
          management services.  Cinergy Business Solutions ("CBS"), a
          wholly-owned nonutility subsidiary of Cinergy Solutions, was
          formed in 1998 to market similar utility asset management
          services.  (For more information on CBS, see Cinergy's quarterly
          reports on Form U-9C-3). In the Second Quarter 1999, Cinergy
          Solutions continued marketing to municipals, cooperatives,
          universities, governmental institutions and similar entities
          various transmission and distribution engineering, procurement
          and construction services, including construction of transmission
          and distribution lines, procurement of materials, construction of
          substations, complete turnkey projects, and project management.

     c.   Technical/Consulting Services.  In 1998 Cinergy Solutions formed
          a new, wholly-owned subsidiary, Cinergy Customer Care, Inc., to
          market utility billing services and/or utility call center
          services to utility companies.  However, this subsidiary remained
          inactive through the Second Quarter 1999.

     d.   QF Project Development and Ownership.  See Cinergy's quarterly
          reports on Form U-9C-3 for information concerning Cinergy
          Solutions' joint venture with Trigen Energy Corporation.

     e.   Consumer Services.  Cinergy Solutions is no longer offering its
          appliance service contract program, called "Appliance Protection
          Plus."

     f.   Customer Financing.  In tandem with a bank, Cinergy Solutions
          continued marketing "Quick Credit," a financial services program
          providing residential, commercial, and institutional customers
          with financing for retrofit or replacement of their HVAC systems
          and other types of energy-related projects.

     g.   Third-Party Alliances.  See Cinergy's quarterly reports on Form
          U-9C-3 for information concerning Cinergy Solutions' joint
          venture with Trigen Energy Corporation.

2.   During the Second Quarter 1999, Cinergy Services provided accounting,
     executive, legal, information systems, marketing and customer
     relations, and engineering and construction services to Cinergy
     Solutions for a total cost of approximately $1,163,000.  During that
     same period, The Cincinnati Gas & Electric Company and PSI Energy,
     Inc. provided engineering and construction and project management
     services to Cinergy Solutions totaling approximately $12,000 and
     $105,000, respectively.

3.   During the Second Quarter 1999, (a) Cinergy issued no guarantees of
     financial or performance obligations of Cinergy Solutions, and (b)
     Cinergy Investments made net open-account advances to Cinergy
     Solutions totaling approximately $798,869.83 at annual interest rates
     ranging from 5.30% to 5.38%.

4.   During the Second Quarter 1999, Cinergy Solutions did not enter into
     any long-term contract by which Cinergy Solutions performs long-term
     operations, load control or network control of any electric
     generation, transmission or distribution facility.

5.   Enclosed herewith are financial statements for Cinergy Solutions dated
     June 30, 1999 filed confidentially pursuant to Rule 104(b).



                            S I G N A T U R E

     Pursuant to the requirements of the Act, the undersigned company has
duly caused this document to be signed on its behalf by the undersigned
thereunto duly authorized.

Date:  August 18, 1999

                                       CINERGY SERVICES, INC.

                                       By: /s/William L. Sheafer
                                            Vice President and Treasurer