Sites hosted by the National Renewable Energy Laboratories and Others Related to Renewable Energy

NREL analysis publications, data, and tools can help solve your energy challenges.
http://www.nrel.gov/analysis/

A suite of interactive maps on renewable energy resource data: solar, biomass, geothermal, wind.  See Biofuels\ Biomethane\ Methane generation potential from wastewater treatment
https://maps.nrel.gov/

System Advisor Model (SAM) is a performance and financial model designed to facilitate decision making for people involved in the renewable energy industry: photovoltaic, battery storage, concentrating solar power, and wind.
https://sam.nrel.gov/

Regulatory and permitting information desktop tool kit
http://en.openei.org/wiki/RAPID

Database of State Incentives for Renewable Energy and Efficiency – for finding policies and incentives by state
http://www.dsireusa.org/

State & local energy data – use app to get comprehensive energy use and activity data that can help your city plan and implement clean energy projects.
http://apps1.eere.energy.gov/sled/#/