If you care about cleantech in the U.S., this graph should make your blood run cold:

Boom & Bust: the coming cleantech cliff

That’s from a new report — “Beyond Boom and Bust: Putting Clean Tech on a Path to Subsidy Independence” — from folks at the Breakthrough Institute, Brookings Institution, and World Resources Institute. It’s a welcome and much-needed attempt to put some numbers behind the debate over federal cleantech support.

It’s divided into three parts. The first tells the story of cleantech policy over the last five years. Early in his term, Obama unleashed a ton of support for cleantech, mainly via the stimulus bill, but also by funding some programs from the Bush era and earlier. At around $150 billion, federal cleantech spending from 2009-2014 will amount to over three times what was spent from 2002-2008. But that funding is dropping off a cliff:

In the absence of legislative action to extend or replace current subsidies, America’s clean tech policy system will have been largely dismantled by the end of 2014, a casualty of the scheduled expiration of 70 percent of all federal clean tech policies. … Furthermore, many of the remaining programs will end shortly after 2014.

Yikes.