High Potential Regions for Enhanced Geothermal Systems in Canada |
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Authors: | Jacek Majorowicz Stephen E Grasby |
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Institution: | (1) NGC Edmonton, Edmonton, AB, T6R 2J8, Canada;(2) Department of Geology and Geological Engineering, UND, Grand Forks, ND, USA;(3) Geological Survey of Canada, Calgary, AB, Canada |
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Abstract: | Previous estimates of geothermal energy potential in Canada give an indication of available heat to be ‘farmed’ at depth.
This article examines in more detail depth–temperature relationships near large population centers in western Canada, as well
as remote communities in northern Canada, in order to provide a first order assessment of Enhanced Geothermal Systems (EGS)
potential for electrical generation. Quantities of EGS thermal power output and electrical generation are dependent on output
temperature and flow rate. We relate these potential power rates as a whole to drilling and installation cost for the doublet
systems and triplet system. Results show areas with significant EGS potential in northern Alberta, northeastern British Columbia,
and southern Northwest Territories related to high heat flow and thermal blanketing of thick sedimentary cover. Estimated
installation costs in 2008 dollars are under 2 mln$/MWe. We also estimate significant reductions in CO2 emissions by conversion to geothermal electric production. |
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