EXHIBIT 11 Environmental Power Corporation Computation of Earnings Per Share June 30, 1997 For the three months ended June 30, 1997: - ---------------------------------------- Weighted average number of shares outstanding 11,195,182 ------------ Net loss $ (1,701,236) ------------ Loss per share - primary and fully diluted $ (.15) ------------ For the six months ended June 30, 1997: - ---------------------------------------- Weighted average number of shares outstanding 11,206,990 ------------ Net loss $ (1,389,806) ------------ Loss per share - primary and fully diluted $ (.12) ------------