Energy Saving Trust: http://www.est.org.uk
Carbon Trust: http://www.thecarbontrust.co.uk/energy
Centre for Alternative Technology:http://www.cat.org.uk
Combined Heat & Power Association: http://www.chpa.co.uk
Micropower: http://www.micropower.co.uk
Solar Energy Alliance: http://www.solarenergyalliance.com
Sustainable Development Publications: http://www.earthscan.co.uk
UK Centre for Economic & Environmental Development: http://www.ukceed.org
Midas Technologies (GB) Ltd: http//www.midastech.co.uk