Who made SEPA's solar list?

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The Solar Electric Power Association (SEPA) has released its list of the U.S.-based utilities that added the most new solar power to their systems, and the most solar on a watts-per-customer basis, in 2013. The report identifies the companies that are integrating solar into power grid, as well as industry trends such as total installed capacity, market share and growth rates.

Utilities making this year's Megawatt list accounted for 82 percent of capacity integrated in 2013 -- up from 73 percent in 2012. Pacific Gas & Electric (PG&E) led the Megawatt rankings with 1,471 MW. In addition to PG&E, who topped the list for the sixth year, is San Diego Gas and Electric (SDG&E) and Arizona Public Service (APS).

Rounding out the Megawatt list are Southern California Edison (SCE), Duke Energy Progress, National Grid, Public Service Electric and Gas Company (PSE&G), Hawaiian Electric Company, Georgia Power, and Duke Energy Carolinas. Newcomers include Duke Energy Progress, National Grid, PSE&G, and Georgia Power. This is the sixth year that Pacific Gas and Electric Company topped the list.

Sterling Municipal Light Department (SMLD) was first in the Watts-Per-Customer category with 4,100 MW. This category takes into account the number of customers each utility serves relative to its solar megawatts installed. Following the Massachusetts muni are SDG&E and Silicon Valley Power.

The remaining providers include Arizona Public Service (APS), Hawaiian Electric Company, PG&E, Hawaii Electric Light, Maui Electric Company, Kauai Island Utility Cooperative (KIUC), and Imperial Irrigation District (IID). The Hawaiian utilities and IID have made the list twice.

Of particular note is the fact that two Duke Energy businesses made the top 10 for adopting new solar -- Duke Energy Progress ranked fifth and Duke Energy Carolinas tenth, bringing on about 200 MW of new solar capacity, in large part due to purchases from regional solar developers.

For more:
- see the rankings

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