The EERE web site contains comprehensive information on several alternative energy technologies, including: bioenergy, hydropower, wind, solar and geothermal.
A site for beginners in astronomy. Contains introductory material on the structure of the Solar system, the planets and their moons. There is a dictionary containing brief articles and a free online course for different age groups (kids aged 6-11 and older students, aged 12-18).
The Florida Solar Energy Center (FSEC) is the largest and most active state-supported renewable energy and energy efficiency research, training and certification institute in the United States of America.
Discover Renewable Energy resources, like Solar, and how it improves the quality of life and promotes sustainable development throughout the world as a practical, reliable, cost-effective, and healthier alternative for people and the environment.
Web site offers an invaluable energy education resource for students, teachers, and parents; with topics including alternative energy, biomass, energy efficiency, fuel cell, photovoltaics, renewable energy, solar, and more.
If you would like to purchase alternative power sources, then this online retailer has a wide selection of options, including solar panels, wind generators, water pumps and more.