The cost of solar power in the U.S. is now 60% cheaper than it was in early 2011, according to a joint report by the U.S. Solar Energy Industries Association (SEIA) and GTM Research.

The Solar Energy Industries Association (SEIA) this week welcomed global energy company E.ON, headquartered in Essen, Germany, as the newest addition to its board of directors.

The American Council for an Energy-Efficient Economy (ACEEE) ranks Boston as the most energy-efficient of 34 major U.S. cities rated.

NPD Solarbuzz forecast a tenth consecutive quarter where net bookings for PV equipment lag behind recognized sale revenues.

The Sweden-based startup convinces Norwegian investors Umoe and others to invest close to $10 million to help the company develop the nanotechnology that can create 25% more efficient solar cells.

Chinese PV manufacturer ReneSola successfully closes $70 million securities offering on the NYSE, announcing that proceeds received are to be used for polysilicon production optimization.

Clean energy sources such as solar and wind are more cost-effective than coal-fired power plants when health and climate impacts are factored in, according to Springer’s Journal of Environmental Studies and Sciences.

Munich-based renewable energy company BayWa r.e. begins construction on the largest solar power project in the company’s history — a 45.4 MW solar farm in the Aquitane region of France.

M/s Table Rock Associates (TRA) signs letter of intent with Pakistan’s Alternative Energy Development Board (AEDB) to construct a 100 MW PV power plant in the country’s Punjab province.

Approval of the largest program for shared renewable power in the U.S. passes in California, enabling schools, rental tenants and owners of homes in the shade to invest in solar energy projects.