The cleantech industry left the fourth quarter of 2011 with many challenges on its hands. Solyndra’s bankruptcy still hangs over the solar industry, while the electric vehicle market saw somewhat lower-than-expected sales of the Nissan Leaf and Chevy Volt. And in the data center space, the x86 vs. ARM debate has so far raised more questions than answers as to the future of low-power processors. This quarterly wrap-up analyzes these events and others, examining them in light of the clues they hold to the next 12 months. It also provides a near-term outlook of trends, technologies and companies that will be important to watch in 2012. Companies mentioned in this report include Calxeda, First Solar, NRG Energy and Microsoft. For a full list of companies, and to read the full report, sign up for a free trial.