In its latest filing, BrightSource said Alstom and Caithness Development had agreed to purchase in private placements $65m and $10m, respectively, at a price per share equal to the initial public offering price.

The competition was won by an urban pod designed for the Brazilian city of San Paolo.

Enerkem will sell 7.25 million shares at between $17 and $19 each with a further 1,087,500 shares available to the investment banks underwriting the initial public offering

Samsung owns 9.84% after a September round.

Siemens acquires the company, after increasing its stake in November to 45%.

The US-based biotechnology company, previously backed by BASF and ASF, would have a market capitalisation of $365.3m if it floats at the top end of its range.

IC Green Energy backs the bio-fuels company, which is looking for other strategic investors to bring its gas-to-fuel conversion technology to market.

Life Technologies Corporation and Flint Hills Resources-backed SG Biofuels has raised $26.4m across two rounds.

Siemens and Applied Ventures-backed Semprius won backing from Morgan Creek, Illinois and In-Q-Tel in January.

The US-based solar company backed by Applied Materials set its range on Monday at $10 to $12 per share.