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 second quarter of 2015 reveal the CEPGI to have a value of 899 granted U.S. patents, which is up 48 over the first quarter and down 41 compared to a year prior. The quarterly Clean Energy Patent crown again belonged to Toyota - the winner of the first quarter and annual winner for 2014 - by a mere two patents edging out General Motors. Solar patents led all other technology sectors in the second quarter for the ninth quarter in a row. Runner up Fuel Cells trailed by 60 patents.