A:
AGRICOLA (AGRICultural OnLine Access) - Search a bibliographic database of citations to the literature of agriculture [Department of Agriculture (USDA), Agriculture Research Service (ARS), National Agricultural Library (NAL)]

B:
Bioenergy Feedstock Information Network (BFIN) - Provides a gateway to information about fast growing trees, grasses, and residues for fuels and power [Department of Energy (DOE), Oak Ridge National Laboratory (ORNL)]

Biomass Program - Develops technology for conversion of biomass (plant-derived material) to valuable fuels, chemicals, materials and power, so as to reduce dependence on foreign oil and foster growth of biorefineries [Department of Energy (DOE)]

Biomass Research - Research focuses on biomass characterization, thermochemical and biochemical biomass conversion technologies, biobased products development, and biomass process engineering and analysis [Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]

C:
Center for Basic Sciences - Research to improve our understanding of the science behind renewable energy and energy-efficient technologies [Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]

L:
Landfill Methane Outreach Program (LMOP) - Information on the use of landfill gas as a renewable energy source [Environmental Protection Agency (EPA)]

Learning about Renewable Energy - Learn about renewable energy technologies including biomass power, geothermal power, hydropower, ocean power, solar power, and wind energy [Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]

R:
Renewable Resources Maps and Data (NREL) - Provides high-quality renewable energy resource data for U.S. and international locations [Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]