U.S. nonprofit that sponsors a large international conference every two years called the "Summer Study on Energy Efficiency in Buildings". Publishes reports on technical and policy issues relating to energy efficiency.

Specialize in creating building energy simulation software. Building Energy Simulation Programs: DOE-2, EnergyPlus, and SPARK.

An innovative University of California partnership of energy agencies, utilities, building industry, non-profits, and research entities designed to advance energy efficiency science and technology for the benefit of California and other energy consumers environment.

CEERE provides technological and economic solutions to environmental problems resulting from energy production, industrial, manufacturing, and commercial activities, and land use practices.

Promote clean and efficient energy through six programs that focus on national and international renewable energy issues. Encourage the transfer of sustainable technologies and development of sustainable energy practices.

Eleven states across the U.S. have established funds to promote renewable energy and clean energy technologies. CESA provides information and technical services on these funds to build and expand clean energy markets in the U.S. Provides publications, meetings, program and membership information.

Promotes the manufacture and purchase of energy-efficient products and services. Goal is to induce lasting structural and behavioral changes in the marketplace, resulting in the increased adoption of energy-efficient technologies.

Information on program assisting UN ECE to promote and implement greenhouse gas mitigation strategies and develop energy efficiency projects in demonstration zones in Belarus, Bulgaria, Kazakhstan, Ukraine and Russia.

ECW's energy-efficiency information clearinghouse offers publications, projects-at-a-glance, training opportunities, information packages, and library services to residents, businesses, industry, and government.

Provides information and resources for efficient use of energy, protection of the Global environment and sustainable development.

Provides demonstration of energy efficiency and conservation, solar energy and other renewable energy demonstration projects. Ministry of National Infrastructures (Ministry of Energy) and the government of Israel.

The Leicester UK Energy Efficiency Advice Centre gives free impartial advice on energy efficiency within the home and for small businesses. Provides description of services, products and resources.

EECA works to implement New Zealand Government strategies for energy efficiency, conservation and renewable energy in both the private and public sectors.

EST, based in the UK, leads in the field of delivering energy efficiency to domestic, business, local government and trade sectors. Provides publications, news and resources.

U.S. EPA Energy Star programs and products help save the environment and save consumers money by using less energy through advanced design or construction. Consumer products include most major appliances, lighting fixtures, office products, hvac systems, and homes. Site is good source of appliance energy ratings.

Lawrence Berkeley National Laboratory research and development leading to better energy technologies and reduction of adverse energy-related environmental impacts.

Energy efficient export opportunities, links to the energy efficiency community, market assessments and financing resource guides.

FEMP helps federal agencies reduce building energy costs, increase energy efficiency, use renewable energy, and conserve water.

The Finnish electricity branch organization: power and heat generation, procurement, transmission, sales, and building of power transmission grid.

IAEEL is a global high-quality, energy-efficient lighting network and information resource. Resource index and listing of events.

Non-profit environmental organization working globally to accelerate the adoption of energy-efficient policies, technologies, and practices in developing countries to enable economically and environmentally sustainable development.

INFORSE provide news and information on the implementation of sustainable energy solutions. Worldwide NGO network formed at the Global Forum in Rio in 1992 with 200 member organizations worldwide.

INFORSE provide news and information on the implementation of sustainable energy solutions. Part of worldwide NGO network formed at the Global Forum in Rio in 1992.

A non-profit organization, which develops products and services to aid in the measurement and verification of energy and water savings resulting from energy/water efficiency projects. Provide product, service, download and contact information.

A source for energy efficiency and renewable energy research and information.

Provides information on programs, resources and consumer tips.

The Midwests non-profit organization for promoting a sustainable future through renewable energy and energy efficiency

Resources from coalition working to improve the quality of life, the environment and the economy of Minnesota by promoting energy efficiency and the sound use of renewable energy.

Provides information on Singapore's energy efficiency/conservation and clean/renewable energy issues. Includes the Energy Label Database and Bulletin Board for energy efficient/energy saving products/services.

NREL promotes a sustainable energy future by developing renewable energy technologies, improving energy efficiency, advancing related science and engineering, and facilitating commercialization of these technologies by collaborating with industry. Located in Golden, Colorado.

Resources, publications and information on how to save energy and on alternative energy sources for consumers and businesses. Regulations and program information including R-2000 and Energy-Star. Site in English and French.

NEEP is a regional non-profit, that increases and coordinates energy efficiency and market transformation efforts in the US Northeast.

Promotes the understanding, development, and adoption of energy conservation and non-polluting, renewable energy technologies. Programs and activities focus on the northeastern United States (from Washington, DC to Maine).

Non-profit consortium in the U.S. Pacific Northwest working to transform markets for energy-efficient products and services. Online reports on products and technologies for industry, agriculture, homes, and other applications.

Develops, implements energy efficiency and conservation projects throughout the state; provides SC-specific energy data, information.

Nonprofit organization provides energy related repairs to low-income families in the metro Atlanta, Georgia area. Also provides minor plumbing repairs and water conservation devices. Services free to low-income households.

Promoting sustainable energy and environmental technologies. Technical bulletins focused on energy conservation including the Southface Journal of Sustainable Building.

SwRI offers test fuel economy evaluations of long-haul truck fleets, and for fuel consumption of bus, pick-up and delivery, and refuse operations. Provides information services, brochures and test procedures.

News and information on renewable energy and energy efficiency technologies.

UK industry-supported organization that aims to encourage a positive national awareness of the need for and benefits of energy conservation. Site has several reports on these topics.

TNO-MEP is a Netherlands knowledge institute committed to quality living conditions, competitive production processes and sustainable use of energy. Provides description of services, research projects, news and publications.

U.S. Department of Energy Web site for information on energy efficiency and renewable energy technologies.

Giving a useful overview of the industry, and specific business addresses, ESTA is the primary trade association for UK "energy conservation" service providers (also known as demand-side management or energy management).

WECC provides information on energy conservation and efficiency for utilities, consumers, environmental groups, and regulatory agencies.

WEEA is composed of developed and developing country institutions and individuals charged with increasing energy efficiency. Assist developing and industrializing countries in accessing information on energy efficiency.