EXHIBIT 24.11
                                POWER OF ATTORNEY


The  undersigned,  as  Controller  of Public  Service  Company of Oklahoma  (the
"Company"), hereby makes, constitutes and appoints T. D. Churchwell 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  1999  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 18th
day of January, 2000.


                                                /s/ R. Russell Davis
                                                R. Russell Davis
                                                Controller



Subscribed and sworn to before me this 18th day of January, 2000 by R.
Russell Davis.

                                                /s/ Kit Hill
                                                Notary Public
                                                State of Oklahoma

My Commission Expires:  June 14, 2001