Senators Coons of Delaware and Moran of Kansas introduced a bill on Thursday that would allow the renewable energy industry access to tax advantages by forming Master Limited Partnerships (MLP). MLPs are companies that are taxed as partnerships but whose stocks can be traded on the market. Up to this point, only fossil fuel enterprises were allowed to form MLPs, creating a barrier for renewable energy growth. Allowing renewable energy access to MLP status would give a much needed tax break and incentivize investment in the industry.
Clean Technica gives a great summary of the bill here:
http://cleantechnica.com/2012/06/08/leveling-the-energy-playing-field-senate-bill-to-allow-renewable-energy-mlps/mlpchartcoons/
Also you can view the bill in its entirety here: MLP_Parity_Act