That depends on how you measure it. Today. – The current ranks and leaders: http://www.eia.gov/todayinenergy/detail.cfm?id=6090 – Recent increases by state: http://www.eia.gov/todayinenergy/detail.cfm?id=5750 The Future. California, Minnesota, Maine, Colorado, and New York have the strongest regulations to require renewable power in the future as a portion of their total. Each has a target to achieve…