Here are the top cleantech stories we’re following on the GreenBeat today:

Coda CEO Kevin Czinger has stepped down by “mutual consent,” according to a company statement. Co-chairman Steve Heller will serve as interim CEO until a replacement has been found. It looks like bad timing for the electric car company, which is about to release its first and heftily-priced sedan.

Hybrid startup Fisker plans to raise $75 – $150 million ahead of a planned IPO, Autoblog Green reports. The company is currently marketing its sporty plug-in hybrid Karma (pictured) and says it will begin producing the Nina plug-in sedan out of an old GM factory in Delaware.

In the U.S., GM may be focusing all its hype on its electric hybrid Chevy Volt, but it’s also busy building electric cars for the rest of the world. The company is currently working on a prototype for the end of this year of an electric minicar in Shanghai called the New Sail EV, Green Car Reports writes. GM also recently announced plans to move forth with its $13 billion IPO.

Siemens is close to signing a contract to supply a Chinese city with electric-vehicle charging infrastructure, Bloomberg reports.

Clean energy consulting company Nexant completed a $50 million financing round, netting an additional $7 million from previously disclosed sums. Its investors include Symphony Technology Group, TeleSoft, Oak Investment Partners, Intel Capital and Beacon.

Honda is currently testing out an African grass called miscanthus for fueling a power station at one of the company’s car factories in England, the WSJ writes. Add that to the list of weird feedstocks that can be turned into fuel.