NREL - Open PV Project:  The Open PV Project is a collaborative effort between government, industry, and the public that is compiling a comprehensive database of photovoltaic (PV) installation data for the United States. Data for the project are voluntarily contributed from a variety of sources including utilities, installers, and the general public. The data collected is actively maintained by the contributors and are always changing to provide an evolving, up-to-date snapshot of the US solar power market.

DOE’s Solar America Communities program is committed to developing a sustainable solar infrastructure that removes market barriers and encourages the adoption of solar energy by residents and businesses in local communities. The objective is to develop comprehensive approaches that lay the foundation for a viable solar market and provide a model for communities throughout the United States. The Solar America Communities Outreach Partnership will bring the lessons learned and best practices from the Solar America Cities partnerships to communities across the United States. Download the most recent Solar Powering Your Community: A Guide for Local Governments (Jan. 2011) (pdf).

US DOE/EERE - Solar Energy Technologies Program: The Solar Energy Technologies Program focuses on developing cost-effective solar energy technologies that have the greatest potential to benefit the nation and the world. A growing solar industry also stimulates our economy by creating jobs in solar manufacturing and installation.

DSIRE Solar Portal: DSIRE Solar provides comprehensive information on state, local, utility, and federal incentives and policies that promote solar energy. Funded by the U.S. Department of Energy's Solar Energy Technologies Program, DSIRE Solar provides solar-specific policy information to consumers, policy makers, businesses, utilities, researchers and other stakeholders.

Solar Energy Industries Association: Established in 1974, the Solar Energy Industries Association is the national trade association of the solar energy industry. As the voice of the industry, SEIA works to make solar a mainstream and significant energy source by expanding markets, removing market barriers, strengthening the industry and educating the public on the benefits of solar energy.

American Solar Energy Society: Established in 1954, the nonprofit American Solar Energy Society (ASES) is the nation's leading association of solar professionals & advocates. Our mission is to inspire an era of energy innovation and speed the transition to a sustainable energy economy. We advance education, research and policy.