Green venture capital remaining firm in US

US venture capital investment in clean technology companies maintained a level of $4.9 billion in 2011, down 4.5% over 2010 but up 29% from 2009, according to a study released this week by Ernst & Young LLP. The energy sector led with almost 31% of the investments, industry products and services received 20%, energy storage received 19%, and the energy efficiency sector received 13% of investments.

57% of the total cleantech venture capital investment took place in California.

Details of the Ernst and Young LLP study, based on data from Dow Jones VentureSource, can be found at

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