The mission of EPA is to protect human health and the environment.

TEC's mission is to educate and advocate for conservation and improvement of Tennessee's environment, communities, and public health.

The Office of Energy Efficiency and Renewable Energy (EERE) invests in clean energy technologies that strengthen the economy, protect the environment, and reduce dependence on foreign oil.

ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy efficient products and practices.

The mission of the Energy Department is to ensure America’s security and prosperity by addressing its energy, environmental and nuclear challenges through transformative science and technology solutions.

The EPA Green Building site provides basic information on the topic, reasons for green building, descriptions of different green building types, and additional resources for research.

Included in the High Performance Buildings Program Area are links to, and highlights from, the U.S. Green Building Council (USGBC), the Leadership in Energy and Environmental Design (LEED) Green Building Rating System, case studies of green construction efforts, software and databases to aid in determining which construction products and processes are the most effective, and assorted high performance construction guidelines and standards

The NREL is the only federal laboratory dedicated to the research, development, commercialization and deployment of renewable energy and energy efficiency technologies. Backed by 35 years of achievement, NREL leads the way in helping meet the growing demand for clean energy

Originally established by Congress in 1935 as the Soil Conservation Service (SCS), NRCS has expanded to become a conservation leader for all natural resources, ensuring private lands are conserved, restored, and more resilient to environmental challenges, like climate change.