Pricing Supplement No. 011                     Filed pursuant to Rule 424(b)(3)
Dated: February 28, 1997                       Registration No. 333-14727
(To Prospectus dated November 7, 1996 as supplemented by a Prospectus Supplement
dated February 26, 1997)

                       PUBLIC SERVICE COMPANY OF COLORADO

                       SECURED MEDIUM-TERM NOTES, SERIES B
                (being a series of First Collateral Trust Bonds)


Principal amount ($): 100,000,000     Form:  Book-Entry __X__Certificated __
Original Issue Date:  March 5, 1997   Redeemable at Company Option:
Stated Maturity: March 5, 2007              ____Yes      __X__No
Interest Rate (%): 7.11                 Initial Redemption Date: N/A
Default Rate (%): None                  Initial Redemption Percentage: N/A
Issue Price (%): 100                    Annual Redemption Percentage
Commission (%): .625                        Reduction: N/A
Net proceeds ($): 99,375,000          Optional Repayment Dates: N/A

            Redemption prices (if redeemable): The redemption price (if any) for
the Notes offered  hereby will  initially be the Initial  Redemption  Percentage
multiplied  by the unpaid  principal  amount to be  redeemed  of each Note.  The
Initial  Redemption  Percentage shall decline at each anniversary of the Initial
Redemption  Date  by  the  Annual  Redemption  Percentage  Reduction  until  the
redemption price is 100% of the principal amount to be redeemed.

            Additional terms: None


Agent acting in the capacity as indicated below:
      ____ Agent          __X__    Principal

If as principal:
      _____The Notes are being offered at varying  prices  related to prevailing
      market prices at the time of resale.
      __X__The Notes are being offered at a fixed initial public offering price
      of 100% of principal amount.

            THESE  SECURITIES  HAVE  NOT BEEN  APPROVED  OR  DISAPPROVED  BY THE
SECURITIES AND EXCHANGE COMMISSION OR BY ANY STATE SECURITIES COMMISSION NOR HAS
THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS  PRICING  SUPPLEMENT  OR THE  ACCOMPANYING
PROSPECTUS SUPPLEMENT. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.