Tesla, SolarCity quietly selling building battery projects

Electric car company Tesla and solar roof installer SolarCity have quietly been making deals that could one day lead to dozens of sales of battery projects coupled with rooftop solar systems built at both residential and commercial buildings in California.

Groupon’s $12.6B valuation compared to greentech (it’s sad)

Looks like Groupon will go public on Friday morning at $20 per share, giving it a valuation of $12.6 billion for its online coupon business. Let’s compare it to some of the greentech startups and big energy firms and try not to get disturbed.

Tesla’s Roadster to return in 2014

Electric car maker Tesla will soon stop manufacturing its inaugural car the Roadster. But now, according to reports, Tesla plans to bring back the Roadster in 2014 based on a new platform — likely a tweaked version of the Model S.

Tesla investor takes a Model S beta for a spin

When you’re investor in electric car company Tesla, you get to test drive the car you helped fund. Draper Fisher Jurvetson Partner Steve Jurvetson shot this video of his recent test drive of a Model S Beta around a track at Tesla’s Fremont, Calif. factory.

Tesla to buy Model S battery cells from Panasonic

Electric car maker Tesla announced on Tuesday that it will buy battery cells from Panasonic to build at least 80,000 cars over a four-year period, including supplying battery cells for of its second electric car the Model S.

Green Overdrive [video]: We test ride a Tesla Model S Beta!

For our latest Green Overdrive show, we bring you our ride in one of Tesla’s electric Model S Betas (a burgundy beauty), and we show you how an electric vehicle designed from the ground-up handles. Bonus: we interview Tesla’s Chief Designer Franz von Holzhausen.

How to fit 8 people in Tesla’s electric Model S

Tesla’s Model S is so roomy it can fit seven people (including two back-facing kids seats), and if you’re really, REALLY!, creative you can fit 8 (don’t try this at home folks) — watch the video for the kicker.

Tesla’s Model S Betas revealed [photos, video]

Electric car maker Tesla Motors took the wraps off of its electric Model S sedan Betas at a customer event this weekend, allowing interested customers the opportunity to participate in short drives of three of the company’s Model S beta cars. Here’s photos and video: