According to a report from the U.S. Department of Energy’s (DOE) National Renewable Energy Laboratory (NREL), States’ policies are important to wind development. The report, State of the States 2010: The Role of Policy in Clean Energy Market Transformation, shows the connection between states’ clean policies, renewable energy development and actual reductions in energy use. It is the first report of its kind, demonstrating significant connections between reduced energy use and building codes. Further, the report indicates the relationship between implementing policy and the development of wind and solar projects.
Additionally, NREL provided the analysis and findings for the DOE’s 2009 U.S. State Clean Energy Data book, which summarized the status of state-level energy efficiency and renewable energy development. The data book found that Texas led the country in total non-hydro installed energy capacity and California led in solar energy installed capacity.