East Region Source: J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Charts and graphs extracted from this press release must be accompanied by a statement identifying J.D. Power and Associates as the publisher and the J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM as the source. No advertising or other promotional use can be made of the information in this release or J.D. Power and Associates survey results without the express prior written consent of J.D. Power and Associates. J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM UGI New Jersey Natural Gas Columbia Gas of Pennsylvania Washington Gas Light Baltimore Gas & Electric Niagara Mohawk Power Public Service Electric & Gas South Jersey Gas Company Keyspan East Region Average Con Edison Elizabethtown Gas Equitable Gas Dominion Peoples National Fuel Gas PECO Energy Philadelphia Gas Works

Midwest Region J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Citizens Gas & Coke Utility CenterPoint Energy-Minnegasco MidAmerican Energy Louisville Gas and Electric Aquila Cincinnati Gas & Electric Illinois Power Laclede Gas We Energies Columbia Gas of Ohio Consumers Energy Kansas Gas Service Midwest Region Average MichCon Dominion East Ohio Gas Missouri Gas Energy Vectren Northern Illinois Gas Northern Indiana Public Service Peoples Energy Source: J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Charts and graphs extracted from this press release must be accompanied by a statement identifying J.D. Power and Associates as the publisher and the J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM as the source. No advertising or other promotional use can be made of the information in this release or J.D. Power and Associates survey results without the express prior written consent of J.D. Power and Associates.

South Region J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Alagasco Atmos Energy Louisiana CenterPoint Energy-Entex City Public Service Texas Gas Service Company South Region Average SCE&G PSNC Energy TXU Gas Piedmont Natural Gas Oklahoma Natural Gas CenterPoint Energy-Arkla Source: J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Charts and graphs extracted from this press release must be accompanied by a statement identifying J.D. Power and Associates as the publisher and the J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM as the source. No advertising or other promotional use can be made of the information in this release or J.D. Power and Associates survey results without the express prior written consent of J.D. Power and Associates.

West Region J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Southern California Gas Northwest Natural Southwest Gas West Region Average Public Service Co. of New Mexico Puget Sound Energy Pacific Gas and Electric Questar Gas Xcel Energy San Diego Gas & Electric Source: J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM Charts and graphs extracted from this press release must be accompanied by a statement identifying J.D. Power and Associates as the publisher and the J.D. Power and Associates 2004 Gas Utility Residential Customer Satisfaction Study SM as the source. No advertising or other promotional use can be made of the information in this release or J.D. Power and Associates survey results without the express prior written consent of J.D. Power and Associates.