Sunnyvale, California based fuel cell maker, Bloom Energy, has raised another $150 million venture capital investment – making the clean tech firm one of the valued pure-play companies in the market.

According to DowJones VentureWire, the Series G round is being marketed by Advanced Equities. Should the capital come in, Bloom Energy will have raised $800 million on a reported valuation of $2.7 billion over its 11-year history from investors that include Alberta Investment Management Corp., DAG Ventures, GSV Capital, Kleiner Perkins Caufield & Byers, Mobius Venture Capital, Madrone Capital, Morgan Stanley and New Enterprise Associates.

Bloom Energy fuel cells produce a solid fuel-based oxide, which is installed into proprietary energy Bloom box blocks.  Bloom box receives electricity from natural gas and biogas by oxidation. One mini-power plant takes up very little space (about one parking space for a car) and produces up to 100 kilowatts of power per hour.

Bloom Energy fuel cell produces a compact reduced carbon footprint theory, which uses the silicon present in the sand to catalyze the production of energy by a reaction between oxygen and ethanol. The green energy is one of the most well-known in the industry and Bloom blocks are used by companies such as Google, eBay, Apple, Adobe and Wal-Mart for their power hungry data centers.

Go Green with Clean Tech

Innovations in bio fuel, solar energy and wind turbines and other green energy technologies may have brought environmental changes on a global scale. From technology perspective, the green data center trend is picking up, most importantly some of the industry’s biggest names are taking part– from Facebook to Google, HP to Apple, some of the most power-hungry tech companies are now gearing for eco-friendly data center facilities.

HP recently entered a contract with Norwegian real-estate firm Entra to build one of the most eco-friendly data centers. The data centers, when operational, will be hosted in a 30,000-square meter facility, with an overall energy input of just over 60Mw.  And Facebook has decided to set up one of its server farms in Sweden to run on hydroelectric power. Then there’s Apple, who has decided to setup solar panel powered data center, also in Sweden.