Exhibit 10.1.d

GUARANTY EXTENSION

          This Guaranty Extension is made and entered into as of March 29, 2004,
by and between Great Plains Energy Incorporated (the "Guarantor") and The
Cincinnati Gas & Electric Company (the "Creditor"), and, each a "Party" and
collectively the "Parties".

          Whereas, Guarantor issued a certain guaranty dated as of March 1, 2004
(the "Guaranty") in favor of Creditor relating to Agreements (as defined in the
Guaranty) between Strategic Energy, L.L.C. ("Strategic") and the Creditor, and

          WHEREAS, the Guaranty provides for a specific termination date of
March 31, 2004; and

          WHEREAS, Guarantor is willing to extend the specific termination date
of the Guaranty to March 31, 2005;

          THEREFORE, in consideration of the premises and of the mutual
agreements herein contained, the receipt and sufficiency of which is
acknowledged by Guarantor and Creditor, the Parties agree as follows

          1. Guarantee Extension. The second sentence of Section 9 of the
Guarantee hereby is amended and restated to read in its entirety as follows:

This Guaranty shall terminate on the first to occur of (a) ten (10) days after
Creditor receives written notice from Guarantor of such termination, (b) the
full payment of all Obligations, and (c) March 31, 2005 (the "Termination
Date").

          2. General. This Guaranty Extension shall be effective as of the date
first above written. Except as specifically amended herein, the Guaranty shall
remain in full force and effect in accordance with its terms, and the Guaranty,
as amended hereby, is hereby ratified and confirmed.

          In witness whereof, the Parties have signed this Guaranty Extension as
of the date first written above.

Great Plains Energy Incorporated

/s/Andrea F. Bielsker

Andrea F. Bielsker
Senior Vice President - Finance, Chief Financial Officer and Treasurer

The Cincinnati Gas & Electric Company

By: /s/David L. Wozny
Name: David L. Wozny
Title: V. P.