This is way cool.  Its not immediately clear from the post at Businessweek that Envision operates as a PPA (power purchase agreement) - where the property owner signs a long term purchase agreement for the power that is generated from the solar units - offsetting the capital costs of the company installing them and eventually generating profit.  [...]

A very important policy development for renewable energy and greentech is buried in the Warner-Lieberman cap and trade bill. Could Congress have done something smart?

Will sustained high oil prices drive conservation measures that have impactful changes in energy usage patterns? If so, investors should look to investment themes that benefit from conservation.

An Iowa State study is out showing that Ethanol has had a big impact on lowering gas prices for consumers - we think their study fails to account for a number of externalities and highlights how poorly gas supply and demand is being managed by Washington.

Nissan and NEC Invest $115M in Lithium Ion batteries; Carbon Trading Exec Explains that Carbon Markets Work; $30MM Raised for GeoThermal; Spanish Renewables Company Planning to Invest $8B in US.