http://www.wagonmaker.com/
Info page by DIY freak
http://www.homepower.com/
magazine
http://www.mikebrownsolutions.com
eccentric guy info about steam engines. Sells engines. Pricey
http://www.marksnyderelectric.com/catalog.php
http://www.marlec.co.uk/ UK firm wind and solar
http://www.greendragonenergy.co.uk/contact.htm
frank.jackson@greendragonenergy.co.uk
http://www.earth-house.com/Pit_Greenhouse/pit_greenhouse.html