NATIONAL HARBOR, Md.--There's good energy at the ARPA-E Energy Innovation Summit.
The conference, held this week and organized by the ARPA-E agency, brings together the movers and shakers in clean-energy technologies who are trying to take inventions from research labs and make them viable commercial products.
So far, no startups which received grants have gone on to become a Google or Apple of green tech. But ARPA-E, which operates with a $180 million budget this year, has had a big impact on entrepreneurship by setting a high bar for technical performance and asking technologists to think big.
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