0001181431-08-053442 4 1 20080916 20080916 20080916 Hatamiya Lon 0001335259 4 34 001-32393 081074542 5109856890 2000 POWELL STREET SUITE 600 EMERYVILLE CA 94608 ENVIRONMENTAL POWER CORP 0000805012 4991 042782065 DE 1231 120 WHITE PLAINS RD SUITE 610 TARRYTOWN NY 10591-5546 914-631-1435 120 WHITE PLAINS RD SUITE 610 TARRYTOWN NY 10591-5546 4 1 rrd218915.xml SEPTEMBER 16 PURCHASE