America currently has a massive number number of startups in the clean energy industry and a lot of them in the fastest growing green industry that is the solar sector.However like startups in all industries a lot of them will fail,some will sell themselves to others like Heliovolt,Ausra while a few will make it really big making a fortune through IPOs for their PE investors and owners.One or two will make fortunes for those who invest early as well like First Solar.Note First Solar despite numerous ups and downs is still up more than 450% from its IPO price five years ago.It won’t be the last either.So despite the strong competition in the solar industry where numerous companies and technologies are jostling in the more than $70 billion global market,one or two of the smart ones will become huge winners like Intel or Microsoft.So which are the solar startups which are showing the most promise.Four of them are currently leading the pack while a few others have got a reasonable chance of success as well though they need to prove more like Stion and Miasole.Some of the more hyped ones like Solyndra have gone on a slimming down mode and might make a comeback though it will be tough.There are some others in stealth mode which may become big also.But here is the list of the Four Best Solar Startups in the Solar Electronics,Solar Panels and Solar Thermal Sectors.

Suniva is the only crystalline solar Solar Companies in the US which has been able to survive and thrive in recent times.Sunpower too has resurrected itself through strategic JVs and acquisitions.The main reason for the decline of the US solar companies has been the severe competition from the low cost Chinese Solar Industry.This has made companies like Energy Conversion Devices and Evergreen Solar shut down US factories and look towards Mexico and China to build low cost factories.However Suniva has managed to face all these competitive threats quite successfully and is looking to expand capacity in the US by building a 400 MW factory.The company even refused a DOE Loan Guarantee saying that the terms were too onerous.The company has manged to raise more then $130 million in equity and has won contracts to supply high efficiency solar cells to the Asian companies which is a first.Suniva differentiates itself through its technology which allows the production of high efficiency monocrystalline solar cells at lower cost.Note Sunpower makes the highest efficiency cells in the world in the range of 22-24% but its cost structure is too high.Suniva is looking to challenge the Taiwanese Cell Producers by marrying higher efficiency with lower cost.