Exhibit 4.8 ENVIRONMENTAL POWER CORPORATION STOCK OPTION AGREEMENT This Stock Option Agreement is entered into between Environmental Power Corporation (the "Company") and Robert I. Weisberg ("Optionee"). I. NOTICE OF STOCK OPTION GRANT Pursuant to a...Stock Option Agreement • August 22nd, 2002 • Environmental Power Corp • Cogeneration services & small power producers • New Hampshire
Exhibit 4.7 ENVIRONMENTAL POWER CORPORATION STOCK OPTION AGREEMENT This Stock Option Agreement is entered into between Environmental Power Corporation (the "Company") and Robert I. Weisberg ("Optionee"). I. NOTICE OF STOCK OPTION GRANT The undersigned...Stock Option Agreement • August 22nd, 2002 • Environmental Power Corp • Cogeneration services & small power producers • New Hampshire
