• Combined Heat and Power Association
• Department of Trade & Industry - Energy, Government.
• Electricity Association
• Ofgem - Office of Gas and Electricity Markets, Government.
• Energy Saving Trust

Energy Efficiency

• Action Energy - Action Energy is a government funded initiative which encourages energy efficiency in business and public sector organisations. Synergen is fully approved by Action Energy and can provide design advice.
• Association for the Conservation of Energy - aims to encourage a positive national awareness of the need for and benefits of energy conservation.
• Energie-Cités - association focusing on energy efficiency in the European municipalities, urban energy planning, urban transport, and European programmes.
• Energy Efficiency - outlines products and initiatives that can help people save energy in their homes.
• European Council for an Energy-Efficient Economy (ECEEE) - stimulates energy efficiency through information exchange and pan-European co-operation. The main activity is the ECEEE Summer Study.
• National Energy Foundation
• Reduce the Use - environmental initiative for small and micro businesses.
• World Energy Efficiency Association (WEEA) - a non-profit organisation serving as a clearing house for information on energy efficiency programs, technologies and measures.
• Degree Days Direct Providers of weather correction data for energy managers.