Here are the top cleantech stories today on the GreenBeat:

GE will buy 25,000 electric vehicles by 2015 in the largest order of its kind. It’s purchasing 12,000 cars — including the Chevrolet Volt — from GM, and some of the cars will be used for leases in the GE Capital unit, BusinessWeek writes.

Thin-film photovoltaic solar company Ascent Solar announced a public offering of common stock yesterday at $4.15 per share. The company offered 5.25 million shares last night which are expected to net a little over $20 million. The share prices have slipped in trading, Forbes writes.

GE has pledged $2 billion to the Chinese cleantech industry, CleanTechnica writes. Half a million will go toward research and development, and $1.5 billion will go toward joint ventures in technology and financial service.

SunPower’s third quarter earnings, announced yesterday, beat analyst’s expectations and showed rises in revenue and profit.

Facebook will be opening a $450 million data center in North Carolina, which will require the center to adhere to greener standards.

U.K. green energy company Ecotricity launched an electric sports car, the Nemesis (pictured), that’s faster than the Ferrari V12 and will run solely on energy generated from wind.

The U.S. Patent and Trademark Office announced it will extend a program that fast-forwards patent applications related to green technology. The extension will hold until the end of the year.