The Globe and Mail reports in its Thursday edition that Edmonton and Ottawa can move from conflict to collaboration by establishing a set of drilling test centres for geothermal power. Guest columnist Peter Massie writes that these test centres would help draw our country together. The economic opportunity is immense: The International Energy Agency forecasts geothermal could be the largest source of new electricity after wind and solar by midcentury, attracting $2.1-trillion (U.S.) of investment. Geothermal requires drilling deep underground to tap Earth's heat, bring it to the surface and generate electricity. It can potentially provide vast quantities of zero-carbon, baseload, dispatchable power with a small landscape footprint. Test centres are the ideal way to bring all these advantages together to make the geothermal breakthroughs the world needs. In the 1970s, when wind energy was uncompetitive and niche, NASA created a series of test centres across the United States that facilitated collaboration among industrial champions such as Boeing and General Electric. The results were extraordinary: a 20-fold increase in power output in just a few years and advances that unlocked decades of cost declines.