Battery company Ener1 is selling $20 million in stock as part of efforts to expand capacity at its plants, Dow Jones Newswires reports. Ener1 batteries are geared towards electric vehicle use. The company announced a $65 million capital raise earlier this month. It has raised over $160 million in equity so far and also earned a government grant.

Energy management startup Hara seems to be on an upward swing and could become a prime acquisition target, Green Tech Media says. The company makes software that monitors energy use (water, gas and electricity) and yesterday landed the city of Philadelphia as a customer. The company’s strategy targets corporations as well, and it has signed up big names like Apple, Coca-Cola, Safeway and News Corp. Green Tech Media’s article notes the company now has 40 customers and tripled its workforce in the past 16 months.

Irish energy company Gaelectric has raised $18 million from European private equity, which will be used to reserve 960 megawatts of transmission capacity for wind energy developments in Montana. The company will work with transmission operators Bonneville Power Administration and NorthWestern Energy.

First Solar could be bolstered by a new California rule that will require state utilities to get one-third of their power from renewable sources by 2020, which is the most stringent requirement of any state in the U.S. An article by Bloomberg suggests other companies that could get a bump as a result: Trina Solar, SMA Solar Technology and Vestas Wind Systems.

The FCC ruling on white space spectrum could have implications for the smart grid, Earth2Tech reports. Now that a portion of airwaves are freed up, companies could build a white space smart grid network, using the network to reach hard-to-cover rural areas. Spectrum Bridge is one startup that is testing that.

Publicly-traded Evergreen Solar has replaced its CEO, a sign of the company’s troubled times of late, which Green Tech Media details. Company stock is trading at 59 cents a share, and the problem seems to be that its technology has become obsolete. Its modules are also too expensive to compete in a solar market that has seen technological advancements and price drops since Evergreen’s IPO ten years ago. Former COO Michael El-Hillow will replace Richard Feldt.