Airtricity
Airtricity is a world leading renewable energy company, developing and operating wind farms in the Republic of Ireland, Northern Ireland, Scotland, England, Wales and the US. 
www.airtricity.com

CH Power
Wind generated electricity.
www.chpower.ie

Green Energy
Not everyone realises the burning of fossil fuels to make electricity is damaging our environment.
http://www.ecotricity.co.uk/

Energy Saving Trust
Non-profit orgnaistaion funded by the government and the private sector...
www.est.org.uk/

Goin Green
GoinGreen created the electric car market.
www.goingreen.co.uk

Green Car Guide
Green-Car-Guide.com specialises in the areas of energy and the environment.
www.green-car-guide.com

Biogreen
Alternative fuel for living.
http://www.rapoleum.com

Carbon Shop
This website supports carbon neutral projects in Ireland.
Calculate your carbon with their carbon calculators.
http://www.carbonshop.ie/