EPA: www.epa.gov Type “Fuel Mix” or “Consumer Choice” into the search area.

EREN STATE: Policy Issues: Disclosure and Certification of Green Power

Green Power Network: Summary of State Environmental Disclosure Policies
http://www.eren.doe.gov/greenpower/disclosetxt.shtml
http://www.eren.doe.gov/state_energy/policy_content.cfm?policyid=45

Maine’s Regulatory Assistance Program with a full list of Disclosure reports in the National Council on Competition and the Electric Industry Disclosure Series (listed above) and other helpful links relating to the New England Disclosure Project and disclosure in the news.
http://www.rapmaine.org/disclose.html

NREL: http://www.nrel.gov/search.html Type in “Fuel Mix Disclosure” or “Consumer Choice”

State Energy Production by Fuel Type – http://www.eia.doe.gov/emeu/states/_statequads.html