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For 2008, VCs poured $680.2 million into US biofuels during 2008, including $437 million for cellulosic ethanol, $175.9 million in microalgae, $42 million in butanol and 25.3 million into systems and infrastructure providers. VC invested $110.5 million in the 4th quarter economic slowdown, after a lively $233 million in the 2nd quarter, high for the year.

Summary of the years transactions by company, date, amount and investor.

Petro Algae, $10 million, 12/26: Undisclosed investors

Coskata, $40 million, 12/5: Blackstone Cleantech Venture Partners, Sumitomo, Arancia, Khosla Ventures, Advanced Technology Ventures, Globespan Capital Partners and TriplePoint Capital.

Solix, $10.5 million, 11/12: I2BF Venture Capital, Bohemian Investments, Southern Ute Alternative Energy, Valero Energy and Infield Capital

Sapphire Energy, $100 million, 9/18: ARCH Venture Partners, Wellcome Trust, Venrock and Cascade Investment

Solazyme: $45.4 million, 8/27: Braemar Energy Ventures, Lightspeed Venture Partners, The Roda Group and Harris & Harris Group .

Amyris Technologies, $90 million, 8/15: DAG Ventures, Khosla Ventures, Kleiner Perkins Caulfield & Byers, TPG Ventures, John Melo, Jeryl Hilleman, Kinkead Reiling, Jack Newman, Neil Renninger, Ralph Alexander, and Tamara Tompkins.

Aurora Bio Fuels, $20.0 million 6/10: Oak Investment Partners, Gabriel Venture Partners, and Noventi

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