June 2014 - In the first quarter of 2014, the United States installed 1,330 megawatts (MW) of photovoltaics (PV), making it second largest on record, according to the Solar Energy Industry Association (SEIA). During the quarter, 232 MW of residential PV were installed and exceeded the commercial market's 225 MW of installed capacity. This marks the first time that residential installed capacity exceeded the commercial sector in a quarter. According to SEIA, the new solar power capacity represents fully 74% of new electric-generating capacity built in the United States during the first quarter. GTM Research and SEIA expect a total of 6.6 gigawatts (GW) of PV to be installed in 2014. That total would represent an increase of 39 percent from 2013.
News Release - U.S. Residential Solar PV Installations Exceeded Commercial Installations for the First Time in Q1 2014
Additional Information - Q1 2014 U.S. Solar Market Insight Report