Canadian Earthenergy
To promote renewable energies in space conditioning applications.
http://www.earthenergy.ca/conta.html
Geo warmtepomp
Water-water warmtepompen
http://www.horos.nl/wp/ww.html
Internat. Ground Source HPA
International ground source heat pump association (igshpa) is a non-profit organization, established in 1987 to advance ground source heat pump (gshp) technology. headquartered on the campus of oklahoma state university in stillwater, ok.
http://www.igshpa.okstate.edu/
Ondergrondse huisen
Energyinfo.net
http://www.energyinfo.net/nuclear/index.html