From 2005 to 2008, the clean technology industry experienced a venture capital boom where the share of total VC investments in clean energy technologies tripled before falling dramatically. Many studies have concluded that the boom and bust in cleantech as an equity investment focus was because clean energy does not fit the venture capital “model.” A recent study from the National Bureau of Economic Research explores other possible reasons for the failure of venture capital to remain interested in clean energy.

As the technology behind renewable energy continues to advance, recent research finds that the public sector plays an important role in catalyzing innovation. This can be seen in three main ways: by funding basic research on renewable energy in all 50 states; by partnering with cleantech startups; and by supporting cleantech clusters through networks, commercialization assistance, and access to capital. Taken together, this recent research suggests that public-sector partnerships can complement industry’s role in growing the green economy at the federal, state and local levels.