The last two years have brought about unprecedented growth for solar utility installations. The utility-scale solar market exploded in 2010 with 459 megawatts (MW) of photovoltaic (PV) and concentrating solar power (CSP) installations, according to the Interstate Renewable Energy Council (IREC). And it's looking like 2011 has the potential to knock those numbers out of the ballpark. According to the Solar Electric Power Association (SEPA), as many as 50 utility-scale solar projects could be completed by the end of this year, totaling 831 MW.*