1. http://www.ncdc.noaa.gov/cdo-web
2. 1991–2005 Update: Typical Meteorological Year 3http://rredc.nrel.gov/solar/old_data/nsrdb/1991-2005/tmy3/
3. The Energy Index for Commercial Buildingshttp://buildingsdatabook.eren.doe.gov/CBECS.aspx
4. U.S. Department of Energy EEREhttp://205.254.135.7/consumption/residential/
5. Renewable Power and Energy Efficiency: Energy Efficiency Resource Standards (EERS) and Goals. 13 September 2011http://www.ferc.gov/market-oversight/othr-mkts/renew/othr-rnw-eers.pdf