I went through our Lotus Notes Master Swap Agreement Database and determined 
that the following masters do not permit power:

The Bakersfield Californian    newprint only
Bayerische Hypo-und Vereinsbank AG   no commodity transactions
CGAS, Inc.      natural gas only (are currently shut down for trading because 
authority certificate only covered one trade)
Coastal Gas Marketing Company   natural gas transactions only
Credit Lyonnais New York Branch (AAA Program) no commodity transactions
E.W. Scripps Company (The)    48.8 gram newsprint swaps only
Lehman Brothers Special Financing, Inc.   no commodity transactions.  Weather 
is ok
Mellon Bank NA     FX and currency option transactions only
Midland Bank plc     FX and currency option transactions only
National Westminster Bank    FX and currency option transactions only
Palladium Insurance Limited    weather only
Phibro, Inc.      energy price swaps based on fixed and floating prices of 
natural gas, crude oil or oil products and/or call        and put options 
based on the prices of natural gas, crude oil or oil products

Praxair, Inc.      natural gas only
PXRE Corporation     weather only
St. Paul Re (Bermuda) Ltd.    weather only
Tempest Reinsurance Company Limited  weather only
Westdeutsche Landesbank Gironzentrale  FX and currency option transactions 
only