While everyone's holding up an exit sign for the Digg team, there's still plenty going on in cleantech.

Cleantech cash goes in all directions - Cleantech.com

Cleantech investment went all over the place this week, with General Electric putting cash into electric cars, and Braemer Energy Ventures and Tesla Motor's Elon Musk investing in ocean iron fertilization.

Q&A with Jeff Boyd, CEO of Miles Electric Vehicle - VentureBeat

Everyone knows the name Tesla Motors. High-profile VC fundings, a high-performance sports car and its layoffs have gotten the company endless coverage. However, there’s also a slew of lesser-known electric car companies. One of the handful with real potential (and real funding) is Miles Electric Vehicle, a Santa Monica, Calif. company with plans to release a highway-speed electric car, the XS500, in 2009.

U.S. Solar Startup Takes in Taiwanese Financing - Earth2Tech

Cleantech America, a San Francisco-based solar developer, says it has received an investment from Wafer Works Corp., a Taiwan-based electronic materials supplier of silicon wafers. The size of the investment was not disclosed, although Cleantech America CEO Bill Barnes did tell us that it will close the company’s Series B round of financing.

Cracking The Battery Barrier - Forbes

While the global battery market is enormous--some $55 billion, according to the Freedonia Group, a Cleveland-based market research firm--batteries remain one of the most limiting technologies in the modern age, thanks in great part to the pesky laws of chemistry and metallurgy. Meanwhile, the need for generating and storing renewable, sustainable energy continues to swell.

That spells massive opportunity for the tech-savvy start-ups trying to crack through these barriers--and potentially massive relief for throngs of frustrated consumers.

NanoGram expands into cleantech with $32M round - Small Times

NanoGram Corp. recently branched out into the cleantech space when it closed on a third equity round of $32M to expand its solar technology and nanomaterials businesses.