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 (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:
      a)  Adams County 5.10% Series 1999 Promissory Note
      b)  Pueblo County 5.10% Series 1999 Promissory Note

2.    Issue, renewal or guaranty:
      a)  issue
      b)  issue

3.    Principal amount of each security:
      a)  $27,250,000
      b)  $21,500,000

4.    Rate of interest per annum of each security:
      a) 5.10%
      b) 5.10%

5.    Date of issue, renewal or guaranty of each security:
      a)  January 21, 1999
      b)  January 21, 1999

6.    If renewal of security, give date of original issue:
      Not applicable.

7.    Date of maturity of each security:
      a)  January 1, 2019
      b)  January 1, 2019

8.    Name of the person to whom each security was issued, renewed or
      guaranteed:
      a)  Adams County, Colorado
      b)  Pueblo County, Colorado

9.    Collateral given with each security, if any:
      a)  none
      b)  none

10.   Consideration received for each security:
      a)  $27,250,000 from Adams County, Colorado from the sale of Adams 
          County, Colorado Pollution Control Refunding Revenue Bond (Public
          Service Company of Colorado Project) Series 1999 deposited directly
          with the trustee
      b)  $21,500,000 from Pueblo County, Colorado from the sale of Pueblo
          County, Colorado Pollution Control Refunding Revenue Bond (Public
          Service Company of Colorado Project) Series 1999 deposited directly
          with the trustee

11.   Application of proceeds of each security:
      a)  Proceeds used to redeem $27,250,000 aggregate principal amount of
          Adams County's 7 3/8% Pollution Control Refunding Revenue Bonds, 1986
          Series A (Public Service Company of Colorado Project)
      b)  Proceed used to redeem $21,500,000 aggregate principal amount of
          Pueblo County's 5 7/8% Collateralized Pollution Control Revenue Bonds
          (Public Service Company of Colorado Comanche Project) Series 1974

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:
          Both securities.
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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 per centum 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) of 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

                                    Public Service Company of Colorado


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

Date: February 8, 1999