The quarterly increase represented a rise of 52% compared to the same period in 2011, proving the looming expiry of the PTC is giving a late-minute boost to the industry. There is currently over 8GW under construction.
California saw the biggest increase in installations over Q1, with 370MW. It was followed by Oregon and Texas, which added 308MW and 254MW respectively.
According to the report, 788 turbines were installed over the three months with an average capacity of 2.15MW. The GE was the largest supplier with over 325MW, followed by Gamesa 252MW, Clipper Windpower with 240MW and Vestas with 223MW.
Chinese suppliers have also contributed over 121MW to the US wind power in Q1. The majority of this came from the completion of Goldwind's 109MW Shady Oaks project in Illinois. However, Guodian United Power also brought online the 9MW Harbor Wind project in Texas.