Despite the many benefits of geothermal, Canada is the only "Pacific Ring of Fire" country that doesn't use it for commercial-scale energy. New Zealand, Indonesia, the Philippines, the United States and Mexico all have commercial geothermal plants. Iceland heats up to 90 per cent of its homes, and supplies 25 per cent of its electricity, with geothermal. We need to join them.
Climate change ought to be a major issue this election, but I'm saddened to note that it has received little attention. Perhaps a quick update on both the problem and the solutions would add some helpful perspective in these final days of the campaign.
Geothermal, also called geoexchange, has one big weakness: high upfront cost. And while our first episode concentrated on residential systems, this time we've found a more appropriate sweet spot for these systems -- commercial buildings.
A passive solar greenhouse in Invermere B.C. is making people across the continent sit up and takes notice. What is a passive solar greenhouse? Don't they already use the sun's energy? Well, yes, but with the traditional Dutch glass box greenhouse design all that heat leaves once the sun goes down.
An earth tube, also called an earth to air heat exchanger, is a set of plastic or concrete pipes that are buried underground and draw air into a building. The air flows through the earth tube and it is warmed or cooled by the ground's constant temperature of about six degrees. The longer the earth tube the more energy transfer you get.
How much geothermal electricity is generated in Canada today? None, zip, nada! Yet the geothermal resource potential in Canada could exceed one million times Canada's current electricity consumption.