SECURITIES AND EXCHANGE COMMISSION
                                Washington, D. C.
                                   FORM U-6B-2
                           Certificate of Notification

Filed by a registered holding company or subsidiary thereof pursuant to Rule
U-20-(d) [Reg. Section 250.20, Paragraph 36,652] or U-47 [Reg. Section 250.47,
Paragraph 36,620] adopted under the Public Utility Holding Company Act of 1935

Certificate is filed by: Public Service Company of Colorado on behalf of
PS Colorado Credit Corporation (the "Company")


This certificate is notice that the above named company has issued, renewed or
guaranteed the security or securities described herein which issue, renewal or
guaranty was exempted from the provisions of Section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48 [Reg. Section 250.48, Paragraph
36,621].

1.  Type of the security or securities: Commercial Paper

2.  Issue, renewal or guaranty: renewal of $300 million commercial paper program

3.  Principal amount of each security: Not applicable

4.  Rate of interest per annum of each security: will be determined upon issue

5.  Date of issue, renewal or guaranty of each security: August 2, 1999

6.  If renewal of security, give date of original issue: program initiated
    September 13, 1990

7.  Date of maturity of each security: date to be determined upon issue, not to
    exceed 270 days

8.  Name of the person to whom each security was issued, renewed or guaranteed:
    public issue

9.  Collateral given with each security, if any: The commercial paper program is
    backed by credit facilities in an amount equal to the size of the program.

10. Consideration received for each security: Not applicable

11. Application of proceeds of each security: Net proceeds will be used for
    current transactions.

12. Indicate by a check after the applicable statement below whether the issue,
    renewal or guaranty of each security was exempt from the provisions of
    Section 6(a) because of:
    a) the provisions contained in the first sentence of Section 6(b):
                      Not applicable
    b) the provisions contained in the fourth sentence of Section 6(b):
                      Not applicable
    c) the provisions contained in any rule of the commission other than
       Rule U-48:
                      All issuances.

13. If the security or securities were exempt from the provisions of Section
    6(a) by virtue of the first sentence of Section 6(b), give the figures which
    indicate that the security or securities aggregate (together with all other
    than outstanding notes and drafts of a maturity of nine months or less,
    exclusive of days of grace, as to which such company is primarily or
    secondarily liable) not more than 5 percentum of the principal amount and
    par value of the other securities of such company then outstanding.  (Demand
    notes, regardless of how long they may have been outstanding, shall be
    considered as maturing in not more than nine months for purposes of the
    exemption from Section 6(a) or the Act granted by the first sentence of
    Section 6(b).
                      Not applicable.

14. If the security or securities are exempt from the provisions of Section 6(a)
    because of the fourth sentence of Section 6(b), name the security
    outstanding on January 1, 1935, pursuant to the terms of which the security
    or securities herein described have been issued.
                      Not applicable.

15. If the security or securities are exempt from the provisions of Section 6(a)
    because of any rule of the Commission other than Rule U-48 [Reg. Section
    250.48, Paragraph 36,621] designate the rule under which exemption is
    claimed.
                      Rule 52(b)

                             Public Service Company of Colorado




                             By: /s/ Nancy E. Felker
                                     Nancy E. Felker
                                     Assistant Treasurer

Date:   August 5, 1999