While California led the states in most clean energy patents in 2012, Michigan was not too far behind. According to the Clean Energy Patent Growth Index (CEPGI), California was the leader in clean energy patents per state in 2012 with 346 patents, but in third place was the Great Lakes State with 202 patents. Michigan’s 202 patents were just enough to make it the leader in clean energy patents overall in the US over the last decade. The 202 patents were also 100 more than Texas who came in at fourth place in 2012. Other top Clean Energy patent states:
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