Corporate Profile Green Mountain Power Corporation (GMP) sells electricity and energy services and products to about one-fourth of Vermont's retail electricity customers, serving half of the state's 14 counties. The Company's retail rates are below the average of all major electric utilities in New England. Corporate Governance Documents: 2003 Code of Ethics & Conduct 2003 Audit Committee 2003 Compensation Committee 2003 Governance Committee 2003 Governance Guidelines Green Mountain Power Corporation (GMP) sells electricity and energy services and products to about one-fourth of Vermont's retail electricity customers, serving half of the state's 14 counties. The Company's retail rates are below the average of all major electric utilities in New England. GMP also sells electric power at wholesale in New England and sells operations services to other utilities in Vermont. With operating revenues of about $229 million, it is the state's ninth largest business in total sales volume and it has about 192 employees. The Company has ownership interest in facilities that supply 30 percent of its total power capacity of 417 megawatts. The remainder of the generation capacity and 91 percent of the energy GMP distributes is purchased from others. GMP's common stock is traded on the New York Stock Exchange under the symbol "GMP". As of December 31, 2004 there were 4,852 registered shareholders.

Contact Information Address Green Mountain Power Corp. 163 Acorn Lane Colchester, VT 05446 -1 Phone (802) 864-5731 Fax (802) 655-8419 IR Contact Dorothy Schnure Phone (802) 655-8418 Home page www.greenmountainpower.biz

Corporate Governance Christopher L. Dutton President and Chief Executive Officer, Director Robert J. Griffin Vice President, Power Supply and Risk Walter S. Oakes Vice President, Field Operations Mary G. Powell Senior Vice President, Chief Operating Officer Donald J. Rendall, Jr. Vice President, General Counsel and Corporate Secretary Robert E. Rogan Vice President, Public Affairs Dawn D. Bugbee Vice President and Chief Financial Officer Directors Elizabeth A. Bankowski Business consultant, corporate social responsibility Nordahl L. Brue Chair, Green Mountain Power; Chair, Franklin Foods Inc.; Chair, PKC Corporation William H. Bruett Senior Vice President, The ESOP Advisory Group, UBS Financial Services, Inc. Merrill O. Burns Principal, Leavenworth Lewis, LLC David R. Coates Executive Vice President, New England Culinary Institute, retired Partner, KPMG Peat Marwick Christopher L. Dutton President and Chief Executive Officer, Green Mountain Power Corp. Kathleen C. Hoyt Financial and organizational consultant Euclid A. Irving Managing Principal, Odysseus Energy LLC Marc A. vanderHeyden President, Saint Michael's College

Shareholder Information Exchange New York Stock Exchange (.N) Stock Quote (GMP) 34.94  As of 11-Apr-2007 4:00 PM Minimum 20 minutes delayed Listed Security GMP Common Stock Transfer Agent Mellon Investor Services, L.L.C. 85 Challenger Road Ridgefield Park, NJ 07660 -1 Phone (888) 921-5537 URL http://www.melloninvestor.com Independent Accountants Deloitte and Touche LLP 200 Berkeley Street Boston, MA 02116  Phone 617-437-2000