GFM Network News


Geo-exchange: down but not out

Although lower natural gas prices have taken some 
of the shine off geo-exchange systems, they can still have 
a place in a renewable energy setup

Geo-exchange heating and cooling systems were big a decade ago, but that was before natural gas prices plunged and the payback of using the ground as a heat source in the winter and a heat sink in the summer became less attractive. But don’t count this technology out quite yet, said energy specialist Thomas Barr, […] Read more

Which geo-exchange setup is right for you?

Geo-exchange systems come in four configurations: Open well Requires a retention well and a rejection well, which generally requires drilling 40 to 250 feet deep, and that raises the spectre of cross-contamination. “Here in Alberta, when you drill vertically you’re possibly going through five to 10 different kinds of sediment layers,” said Thomas Barr of […] Read more