EREN - Solar Energy - Many links on solar energy; from US DOE Energy Efficiency and Renewable Energy Network. One of the best sites for all around information on energy efficiency and renewables.

Greenpeace report - Campaign for solar energy in Europe. Some technical information and a lot of politics.

Solar Case Studies (U.S. DOE) - Case studies of a series of homes, in varied locations around the United States, that successfully incorporated solar and energy efficiency strategies.

Solar Energy Industries Association - SEIA - An association of industries promoting and dealing in solar energy. The site has links to many resources, and is a good starting place for solar energy questions.

PV-WEB - the website of the British Photovoltaic Association - PV-WEB provides information on photovoltaic power and solar electricity from the British Photovoltaic Association, supports PV and solar electricity development in the UK.

American Solar Energy Society - Web site has information on membership and publications, as well as policy statements on topics related to renewable energy and electric utility restructuring.

Genius Loci - Information on a new architecture for buildings. Features include Sunslate roof and facade system. Sunslates are fully recyclable.

Solar Reflections, Inc. - Energy efficient, environmentally friendly and affordable, skylights.

Red Rock Energy - Alternative energy systems for the home or small property. The system collects solar energy using 2-axis heliostat arrays.

Solarware's Solar-Power-Simulation | English - Increased Power-output of Terrestrial Solar-Power systems by Optimized Generator Directing, Sun's path and Shade analyzes.

Solar Cells - Contains information about the manufacture of solar cells.

Daystar: The Four Mile Island Solar Home - A tour of an existing solar home with an emphasis on the experience of solar living . This site has lots of information about solar home construction, renewable energy systems and the environment.

Polymer Solar Energy Initiative - Comprehensive information on Polymer Solar Cells. Get a job with the initiative and get involved in research.

India Solar - Information about status of renewable energy development and related businesses in India.

Photo Voltaic Energy Service Companies - Project of the Stockholm Environment Institute (SEI) which attempts to demonstrate a framework through which solar electricity services can be provided in rural areas of Zambia in a sustainable manner.

Alternative Energy Sources - An investors portal to the alternative energy sectors. Large solar power data base as well as hydro, wind, tidal, and biomass energy resources.

PVPortal.com - Offers a huge amount of solar power related links and information.

DOE Photovoltaic Energy - Online documents pertaining to photovoltaic energy, solar power, solar cells, and other related subjects.

Global Warming Solutions - Offers information about energy conservation using solar energy.

Ecosystems Mission - Aims to develop, promote and market methodologies, technologies, and products that conserve natural resources and advance our planet towards sustainability through the use of solar energy.

Satel-light - Contains a unique source of information for solar energy related applications in Europe.

Solar Electrical Systems - A world leader in the design and installation of the most advanced, trouble-free photovoltaic (PV) power systems for every imaginable application.

European Association for Solar Energy - Non-partisan European Energy Organization that is independent of industry, political institutions, and special interest groups. Promotes solar energy by conducting conferences and awarding a prize. Site has organization information (English and German).

Portal to the World of Solar Energy - Independent and timely information on solar energy; including industry statistics, monthly solar product price surveys, technologies, world wide listing of companies, and more.

El Paso Solar Pond - Information on the only operating solar pond in the U.S.A, used for electrical generation, desalinazation, and brine concentration.

Concentrating Solar Power - Using mirrors to concentrate the sun's energy to power conventional turbines or heat engines to generate electricity.

Solar Explorer - The Tucson Citizen's 100% solar-powered website. A website that is completely powered by solar electricity.

JC Solar House Plans and Solar Collectors - Contains a lot of information about solar energy panels, solar hot water, solar collectors, and more.