U.S. Clean Tech Investment Held Steady in 2011
U.S. venture firms invested $4.9 billion in clean tech companies last year, nearly the same as in 2010, according to a year-end report from Ernst & Young. Approximately 57 percent of all clean tech investment was directed toward California companies. The overall cleantech market was bolstered by five IPOs and 79 M&As. Read the release...