The intellectual property licensing model -- though it's had its problems in other industries -- may have a home in green tech. Argonne National Labs has licensed battery technology to LG Chem and General Motors. Startups Amprius and Envia Systems raised $25 million and $17 million, respectively, this year to do the same. Mission Motors has switched from building electric motorcycles to providing know-how to Chinese electric car-makers while EcoMotors and Achates Power say their engine designs could drastically cut diesel consumption. And watch for deals later this year from stealthy ElectronVault.
NEXT: Solar cells: about to become affordable, finally