1. 2010 with Projections to 2035;EIA, Annual Energy Outlook,2010
2. High wind penetration impact on U.S. Wind manufacturing capacity and Critical resources;Laxson,2006
3. Quantifying global exergy resources;Hermann;Energy,2006
4. 2009 solar Industry year in review;Sherwood,2009
5. Review of international experience integrating variable renewable energy generation;Porter,2007