The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C. provides an indication of the trend of innovative activity in the Clean Energy sector. Results from the first quarter of 2015 reveal the CEPGI to have a value of 851 granted U.S. patents, which is the fifth highest total for any quarter on record with the other top four all occurring within the prior year and a half. The first quarter was down 88 compared to the fourth quarter and up 161 versus the same quarter the year before. The quarterly Clean Energy Patent crown again belonged to Toyota, the annual winner for 2014. Solar patents led all other technology sectors in the first quarter for the eighth quarter in a row. Runner up Fuel Cells trailed by over 80 patents.