Abstract
We examined the potential of geothermal energy development in northern Canadian communities to support local energy demand, along with providing an initial assessment of the economic viability of geothermal energy resources for (a) low enthalpy heating systems and (b) electrical power generation from high temperature resources. We estimate yearly energy production and cost per kWh for geothermal systems using scenarios for thermal and electrical production sustained over 15 years from temperatures reached in the 2–6-km depth range. All the calculations are based on a borehole fluid productivity of 30 kg/s. We assume this to be feasible in sedimentary aquifers and through fractured granites. Under such an assumption and assumptions made on the efficiency of heat exchangers, our modeling shows that thermal energy output for 120°C from 3- to 5-km wells can be as low as 5–8 cents/kWh thermal. For a 6 km depth, the cost of thermal energy can be as low as 1–2 cents/kW thermal for thermal energy production of 100–200 MWh annually.
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We would like to acknowledge helpful reviews by Dr. Alan Jessop and an anonymous reviewer and comments from Dr. John Carranza.
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Majorowicz, J., Grasby, S.E. Geothermal Energy for Northern Canada: Is it Economical?. Nat Resour Res 23, 159–173 (2014). https://doi.org/10.1007/s11053-013-9199-3
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DOI: https://doi.org/10.1007/s11053-013-9199-3