Renewables: General

American Council on Renewable Energy(ACORE)
http://www.acore.org/

California Energy Commission
http://www.energy.ca.gov/

Database of State Incentives for Renewable Energy
http://www.dsireusa.org/

Energy Information Administration
http://www.eia.doe.gov/

European Commission
A Global Overview of Renewable Energy Sources (AGORES)
http://www.agores.org/

Green Energy News
http://www.nrglink.com/

Green Power Market Development Group
http://www.thegreenpowergroup.org/

International Energy Agency
Renewable Energy
http://www.iea.org/

Interstate Renewable Energy Council
http://www.irecusa.org

National Association of Regulatory Utility Commissioners (NARUC)
http://www.naruc.org/

National Renewable Energy Laboratory
http://www.nrel.gov/

National Renewable Energy Laboratory
Energy Analysis
http://www.nrel.gov/analysis/

National Renewable Energy Laboratory
Publications
http://www.nrel.gov/publications/

National Renewable Energy Laboratory
Renewable Energy Analytic Studies Network
http://www.nrel.gov/reasn/default.asp

National Renewable Energy Laboratory
Renewables on Public Lands
http://www.nrel.gov/docs/fy03osti/33530.pdf

National Renewable Energy Laboratory
State Renewable Energy News
http://www.nrel.gov/analysis/emaa/projects/sren

Natural Resources Canada
http://www.retscreen.net/ang/menu.php

Public Renewables Partnership
http://www.repartners.org/

Renewable Energy Atlas of the West
http://www.energyatlas.org/

Renewable Electric Plant Information System (REPiS)
http://www.nrel.gov/analysis/repis/

Renewable Energy Businesses in the World
http://energy.sourceguides.com/businesses/index.shtml

Renewable Energy Nonprofit Organizations in the World
http://energy.sourceguides.com/businesses/byB/org/org.shtml

Renewable Energy Policy Project
http://www.crest.org/

The Source for Renewable Energy
http://energy.sourceguides.com/index.shtml

U.S. Department of Energy (USDOE), Office of Energy Efficiency and Renewable Energy
http://www.eere.energy.gov/

USDOE Office of Energy Efficiency and Renewable Energy
Financing Information
http://www.eere.energy.gov/financing/statelocal.html

USDOE Office of Energy Efficiency and Renewable Energy
Green Power Network
http://www.eere.energy.gov/greenpower/

USDOE Office of Energy Efficiency and Renewable Energy
Renewable Energy Regional Offices
http://www.eere.energy.gov/regions/

University of California Energy Institute (UCEI)
http://www.ucei.berkeley.edu/

Biomass: General

American Bioenergy Association (ABA)
http://www.biomass.org/

Biomass Energy Research Association (BERA)
http://www.bera1.org/

Biomass Research & Development Initiative
http://www.bioproducts-bioenergy.gov/

USDOE Office of Energy Efficiency and Renewable Energy
Biomass Program
http://www.eere.energy.gov/biomass/

Biomass: Biofuels

National Biodiesel Board
http://www.biodiesel.org/

Renewable Fuels Association
http://www.ethanolrfa.org/

U.S. Department of Agriculture Biofuels Information
http://www.nal.usda.gov/ttic/biofuels.htm

USDOE Office of Energy Efficiency and Renewable Energy
Alternative Fuels Data Center
http://www.eere.energy.gov/afdc/

Biomass: Landfill Gas

U.S. Environmental Protection Agency
Landfill Methane Outreach Program
http://www.epa.gov/lmop/

Biomass: Municipal Solid Waste

Solid Waste Association of North America (SWANA)
http://www.swana.org/

U.S. Environmental Protection Agency (EPA), Office of Solid Waste
http://www.epa.gov/osw

Biomass: Waste-to-Energy

Integrated Waste Services Association
http://www.wte.org/

Biomass: Wood

American Forest and Paper Association
http://www.afandpa.org/

Forest Industry Network
World-wide directory of forestry, logging, harvesting, saw milling equipment, etc. companies and related information.
http://www.forestindustry.com/

Regional Wood Energy Development Programme in Asia
http://www.rwedp.org/

Short-Rotation Woody Crops (SRWC) Operations Working Group: a private and public partnership between wood products companies, equipment manufacturers, utility companies, the U.S. Forest Service, the U.S. Department of Energy's Oak Ridge National Laboratory (ORNL), the National Council of the Paper Industry for Air and Stream Improvement (NCASI) and university researchers.
http://www.woodycrops.org/

U.S. Dept. of Agriculture Forest Products Laboratory
http://www.fpl.fs.fed.us/tmu/wood_for_energy/wood_for_energy.html

USDOE Office of Energy Efficiency and Renewable Energy
Forest Products Industry of the Future
http://www.eere.doe.gov/industry/forest/

Geothermal

California Energy Commission Geothermal Program
http://www.energy.ca.gov/geothermal/index.html

Geo-Heat Center, Oregon Institute of Technology, Geothermal Information and Technology Transfer
http://geoheat.oit.edu/

Geothermal Energy Association
http://www.geo-energy.org/

Geothermal Resources Council
http://www.geothermal.org/

Idaho National Engineering and Environmental Laboratory Geothermal Energy Web Site
http://geothermal.id.doe.gov/

Idaho National Laboratory
Geothermal Resource Maps
http://geothermal.id.doe.gov/maps-software

International Geothermal Association
http://iga.igg.cnr.it/index.php

USDOE Office of Energy Efficiency and Renewable Energy
Geothermal Energy Program
http://www.eere.energy.gov/geothermal/

Hydrogen: General

Canada: Hydrogen Economy Portal
http://www.hydrogeneconomy.gc.ca/

International Energy Agency Hydrogen Program
http://www.ieahia.org/

USDOE
Hydrogen Program
http://www.hydrogen.energy.gov/

USDOE Office of Energy Efficiency and Renewable Energy
Hydrogen, Fuel Cells and Infrastructure Technologies Program
http://www.eere.energy.gov/RE/hydrogen.html

Hydrogen from Ethanol news:

http://www.sciencedaily.com/upi/?feed=Science&article=UPI-1-20050422-16014100-bc-us-hydrogenfuel.xml

http://www.newstarget.com/005520.html

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=109&STORY=/www/story/10-28-2004/0002315439&EDATE=

http://wired-vig.wired.com/news/technology/0,1282,62290,00.html

http://www.cnn.com/2004/TECH/science/02/13/hydrogen.reactors.ap/

http://www.npr.org/templates/story/story.php?storyId=1720179

http://www.powerhouseengineering.com/showcontent.php?nav=articles&location=articles/&pointer=ethanol-hydrogen

http://www.motherjones.com/commentary/columns/2004/02/02_204.html

Hydrogen from Solar news:

http://www.shec-labs.com/process.php

http://www.fuelcellsworks.com/Supppage1120.html

http://www.wired.com/news/technology/0,1282,64797,00.html?tw=wn_tophead_1

http://centralphysics.com/

Hydrogen from Wind news:

http://msnbc.msn.com/id/4853004

http://www.treehugger.com/files/2005/04/prince_edward_i.php 

http://windfarmersnetwork.org/eve/ubb.x/a/tpc/f/4531001/m/1320016982/xsl/print_topic

http://www.spacedaily.com/news/energy-tech-04zzzq.html

http://www.nrel.gov/docs/fy04osti/35889.pdf#search='wind%20hydrogen'

http://www.worldchanging.com/archives/001005.html

http://www.energycooperation.org/windproductionH2.htm

Solar: General

International Solar Energy Society
http://www.ises.org/

Solar Energy Industries Association
http://www.seia.org/

USDOE Office of Energy Efficiency and Renewable Energy
Solar Energy Technologies Program
http://www.eere.doe.gov/solar/

Solar: Photovoltaic

BP Solar
http://www.bp.com/modularhome.do?categoryId=4260&contentId=7004852

National Renewable Energy Laboratory
Photovoltaics for Buildings
http://www.nrel.gov/buildings/pv/

National Renewable Energy Laboratory
National Center for Photovoltaics
http://www.nrel.gov/ncpv

NASA Glenn Research Center Photovoltaic and Space Environments Branch
http://powerweb.lerc.nasa.gov/pvsee

PV Energy Systems, Inc.
http://www.pvenergy.com/

PV News
http://www.pvenergy.com/news.html

PV WEB SITES
http://www.pvpower.com/pvsites.html

Sandia National Laboratories Photovoltaic Systems Research and Development
http://www.nrel.gov/buildings/pv/

Solar Electric Power Association
http://www.solarelectricpower.org/

Solar Power
http://www.pvinsider.com/

USDOE Million Solar Roofs Initiative
http://www.millionsolarroofs.org/

Solar: Thermal

ASME (American Society of Mechanical Engineers) Solar Energy Division
http://divisions.asme.org/solar/

The International Society for Optical Engineering Publications: Solar Radiation and Solar Thermal Systems
http://www.spie.org/web/abstracts/oepress/MS54.html

Sandia National Laboratories
National Solar Thermal Test Facility
http://www.sandia.gov/bus-ops/partnerships/tech-access/facilities/nsttf.html

Waves

Electric Power Research Institute (EPRI)
http://www.epri.com/corporate/discover_epri/news/2005/020205_WaveEnergy.html

European Commission Energy Programme
Atlas Project
http://europa.eu.int/comm/energy_transport/atlas/htmlu/wave.html

Ocean Power Delivery Ltd.
Pelamis Wave Energy Converters
http://www.oceanpd.com/

United Kingdom
Marine Research Development Fund
http://www.gnn.gov.uk/environment/detail.asp?ReleaseID=143807

US DOE Office of Energy Efficiency and Renewable Energy
http://www.eere.energy.gov/RE/ocean_wave.html

Wind

American Wind Energy Association
http://www.awea.org/

British Wind Energy Association
http://www.bwea.com/

BTM Consult Aps
http://www.btm.dk/

Danish Wind Industry Association
http://www.windpower.org/en/core.htm

European Wind Energy Association
http://www.ewea.org/

German Wind Energy Association
http://www.wind-energie.de/englischer-teil/english.htm

German Wind Energy Institute
http://www.dewi.de/dewi_neu/index2.html

National Renewable Energy Laboratory
National Wind Technology Center
http://www.nrel.gov/wind

Riso National Laboratory Denmark
Wind Energy Department
http://www.risoe.dk/vea

USDOE Office of Energy Efficiency and Renewable Energy
Wind Energy Program
http://www.eere.energy.gov/wind/

USDOE Office of Energy Efficiency and Renewable Energy
Wind Powering America
http://www.eere.energy.gov/windandhydro/deployment.html

Wind Info Resources on the Net
http://www.afm.dtu.dk/wind/bookmark.html

Windpower Monthly News Magazine
http://www.wpm.co.nz/