This is the list I have compiled (so far) of failed “green” companies:
Abound Solar
Bright Source
Ener1
SunPower
Tesla
Fisker
Beacon
LightSquared
Solyndra
A123
Uni-Solar
Azure Dynamics, Inc
Ecotality, Inc
Solar Trust
LightSquared was never a "green" company - just an Internet company that wanted to use spectrum that was SO close to the GPS system spectrum that it interfered with it ...
Once the FCC proved that this was true - LightSquared's license was denied ...
And, oh yes, LightSquared DID give a pile of cash to the Obama campaign ...
Tesla is a electric car company owned by Elon Musk. I don’t think its dead yet
Add EV-1, Ballard Power Systems, and of course GM’s “Volt” to that list (Certainly GM’s management and stockholders don’t consider the last a “success”)
http://www.realclearmarkets.com/articles/2012/02/01/electric_cars_doubling_down_on_dumb_99493.html
Willard & Kelsey Solar Group LLC laid off about 40 people indefinitely ... to “make changes to production line improvements” ... [though they] would not say when the changes would be completed or when the laid-off employees could return to work. http://www.theblaze.com/stories/government-backed-solar-company-laying-off-employees-after-promising-hundreds-of-new-jobs/
Amonix (through subcontractor Flextronics Industrial) laid off about 200 of its 300-plus employees. Of course, they too are “retooling” the factory. I read that last as meaning they are trying to mine for more subsidies. http://www.theblaze.com/stories/another-energy-company-lays-off-hundreds-of-workers/
There may be more you can discover under FR keyword “FailedGreen” (Technologies, Companies) which I have listed on my homepage, but I don’t have time to check that right now. Please feel free to add FailedGreen to any appropriate FR articles you notice.