SEIA is the national trade association for the solar industry. They work to expand expand markets, strengthen research and development, remove market barriers, and improve education and outreach for solar.

RenewableEnergyWorld.com was started in 1998 by a group of Renewable Energy professionals who wanted their work to relate to their passion for renewable energy. With this passion and the desire to create a long term sustainable business, they have created perhaps the single most recognized and trusted source for Renewable Energy News and Information on the Internet.

The Solar Electric Power Association is a nonprofit organization, formed in 1992 as the Utility Photovoltaic Group. From national events to one-on-one assistance, SEPA is the go-to resource for unbiased and actionable solar intelligence. SEPA is comprised of 300 utility and solar industry members. Breaking down information overload into business reality, SEPA takes the time and risk out of implementing solar business plans and helps turn new technologies into new opportunities.

California Solar Energy Industries Association supports the widespread adoption of solar thermal and photovoltaic systems by educating consumers, supporting solar legislation and conducting business in a professional and ethical manner.

ASES is leading the renewable energy revolution. They are the nonprofit organization dedicated to increasing the use of solar energy, energy efficiency, and other sustainable technologies in the U.S