EXHIBIT 24.15
                                POWER OF ATTORNEY


The undersigned, as Controller of West Texas Utilities Company (the "Company"),
hereby makes, constitutes and appoints Paul J. Brower his true and lawful
attorney-in-fact and agent, with full power and authority to execute in the name
and on behalf of the undersigned, in any and all capacities, the Company's
Annual Report on Form 10-K for 1997 and any and all amendments thereto, to be
filed under the Securities Exchange Act of 1934, as amended, and any other
documents and instruments incidental thereto, and to file the same, with all
exhibits thereto and all documents in connection therewith, with the Securities
and Exchange Commission, hereby granting to such attorney-in-fact, and agent,
full power and authority of substitution and revocation in the premises and full
power and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully for all intents and
purposes as the undersigned might or could do in person and hereby ratifying and
confirming all that such attorney-in-fact and agent, may do or cause to be done
by virtue of this Power of Attorney.

IN WITNESS WHEREOF, I have hereunto executed this Power of Attorney this 27th
day of January, 1998.


                                R. Russell Davis
                                Controller





Subscribed and sworn to before me this 27th day of January, 1998 by 
R. Russell Davis.

                                 Kit Hill
                                 Notary Public

My Commission Expires:
6-14-2001