Shares of A-Power Energy Generation Systems, Ltd. (NASDAQ: APWR) on Tuesday touched lows last seen a month ago, as the company’s first quarter net earnings fell apart on 2008 figures, having failed to sustain the weight of a year-on-year increase in general and administrative costs, among other things.

A cool 28 percent increase in revenues was not enough to stave off a return to pennies for the Capstone Turbine Corporation (NASDAQ: CPST) stock on Tuesday, as the company posted yet another quarterly loss. This time it was in keeping with prior guidance from Wall Street.

The share price of Hoku Scientific, Inc. (NASDAQ: HOKU) lost $0.78 in after-hours trading to counter an 8.2 percent upsurge from the regular trading session as the Hawaii-based firm said it may not be able to continue financing its production facility currently under development in Pocatello, Idaho, but this was not the worst.

Building upon an advantage of already sealed power deals worth more than $8 billion in the Middle East, General Electric Company (NYSE: GE) has signed yet another lucrative contract in the region, and this time it involves supplying its state-of-the-art power generation systems and long-term maintenance services for the Al Dur Independent Water and Power Project, slated to be the biggest power facility in the Kingdom of Bahrain upon completion.

Evergreen Solar, Inc. (ESLR) develops, manufactures, and markets solar power products primarily in Europe and the United States. Evergreen uses a proprietary technology, known as String Ribbon, which uses significantly less silicon than conventional processes.

Quantum Fuel Systems Technologies Worldwide Inc. (NASDAQ: QTWW) is set to supply its affiliate, Fisker Automotive Inc., with its ‘Q-Drive’ high-performance plug-in-hybrid electric vehicle architecture for a debut production vehicle, the Fisker Karma.

A one megawatt (MW), 250 kilowatt-hour battery storage system, developed by Altair Nanotechnologies Inc. (NASDAQ: ALTI) has become the first advanced Lithium-Titanate battery to provide grid regulation services in a major U.S electricity market.

American Semiconductor (AMSC:Nasdaq) manufactures and sells power electronic converters and superconductor wires to energy companies.