SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C.  20549

In the Matter of                                  CERTIFICATE
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 September
30, 1999 ("Third 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 Third 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 Third 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 Third 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 Third 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 $1,201,000.  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 $90,000 and $134,000, respectively.

3.  During the Third 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 $799,000 at annual interest rates ranging from 5.30% to
5.38%.

4.  During the Third 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.  Cinergy Services is separately filing financial statements for Cinergy
Solutions dated September 30, 1999 under a request for confidential
treatment pursuant to Rule 104(b) under the Act.



                            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:       November 29, 1999

                                       CINERGY SERVICES, INC.


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