1. CADDET Renewable Energy Information
   (CADDET Centre for Renewable Energy, ETSU, Harwell, Oxon OX11 0RA, UK)

2. Center for Energy Efficiency & Renewable Technologies
   (CEERT, Sacramento, California USA)

3. Database of State Incentives for Renewable Energy
   (North Carolina Solar Center, North Carolina State University, Raleigh, NC 27695, USA)

4. Electricity Market Studies
   (Lawrence Berkeley National Laboratory, Berkeley, CA, USA)

5. Interstate Renewable Energy Council
   (Interstate Renewable Energy Council, Latham, NY, USA)

6. Renewable Energy Policy Project
   (Center for Renewable Energy and Sustainable Technology, 1200 18th Street, N.W., Washington, DC 20036)

7. Renewable Energy Programs Overview
   (California Energy Commission, Sacramento, CA, USA)

Wind Energy

1. Wind Energy Program
   (U.S. Department of Energy)

2. Wind Energy Technology
   (Sandia National laboratories, Albuquerque, NM, USA)

1. Michigan Biomass Energy Program
   (Michigan Biomass Energy Program)

2. Biomass Program
   (U.S. Department of Energy)

1. Geothermal Energy
   (CREST, Washington, DC, USA)

2. Geothermal Energy Program
   (Energy Efficiency and Renewable Energy Network, U.S. Department of Energy, Washington, DC, USA)

1. Hydropower Program
   (Hydropower Program, U.S. Department of Energy)

2. National Hydropower Association
   (National Hydropower Association, 122 C Street NW, 4th Floor, Washington DC 20002, USA)