Arizona

Two of the United States' largest solar projects, the Arlington Valley Solar Energy II farm and Topaz Solar Farm, have achieved significant milestones in recent days.

First Solar, the world's largest thin-film solar manufacturer, has purchased a 100% stake in a 20-megawatt development in Maryland.

Boston-based wind energy developer First Wind has completed its first project of 2012.

Fluor Corporation, the nation's largest publicly traded engineering and construction company, said this week that it has been selected by a subsidiary of electricity generator LS Power Group to build a 125-megawatt solar plant in Arizona. Fluor was also awarded a separate contract for ongoing operations and maintenance.

Solar module manufacturer Semprius, Inc. has achieved 33.9 percent efficiency for its latest high concentration photovoltaic (HCPV) solar modules the company said Tuesday.

Iowa-based MidAmerican Energy Holdings Company has launched a new renewable energy subsidiary.

First Solar Inc. (Nasdaq: FSLR), the Arizona company which has been garnering awards almost since its inception (in 1999), announced another milestone on January 16th.

Public Service Enterprise Group (PSEG) through its wholly owned subsidiary, PSEG Solar Source, has finalized the purchase of an Arizona solar farm from juwi solar, Inc.

Sempra Generation, a subsidiary of Sempra Energy (NYSE: SRE), announced that its Mesquite 1 solar farm is now delivering energy to the power grid in Arizona.

On Tuesday, the U.S Department of Interior (DOI) approved two utility-scale renewable energy projects to be built on public lands.