The US conglomerate and the Norway-based energy groups have helped the US-based wind turbine component manufacturer get to $41m raised overall.

Chesapeake says it introduced Clean Energy Fuels to Singapore's sovereign wealth fund Temasek and private equity firm RRJ Capital, after the US energy company backed the Nasdaq-listed company with $150m last month.

SpectraWatt files for Chapter 11 after receiving venture funding from a subsidiary of US bank Goldman Sachs, as well as corporates including Intel and Solon, and debt from lenders including corporates Crystalox and Roth & Rau.

The latest round takes ClearEdge's total venture funds raised since 2006 to as much as an estimated $206.8m.

The biofuel developer welcomes Total Energy Ventures International to a pool of corporate venturing backers including General Motors, Sumitomo and Arancia.

MEMC and its solar energy subsidiary, SunEdison, will pay $134.9m, plus performance fees of up to $103.6m for 42MW in American solar power production assets of Spain-based, corporate venture-backed Fotowatio Renewable Ventures.

GE Energy is making a $40m investment into eSolar and intends to use its technology in various parts of the world.

SingTel Innov8's investment in energy management software company Sentilla takes its overall funding to more than $15m.

Previously backed by Morgan Stanley, Primet becomes the latest clean-tech company to garner investment from Dow Chemical.