An article detailing the benefits geothermal energy has for Alberta emphasizes that despite its higher upfront costs, geothermal’s longevity and baseload capacity will yield greater returns. This not only benefits investors financially but also provides communities with reliable, clean power for generations.
Mohammad Kiani, engineer and geochemist, argued that geothermal holds long-term vaiability compared to intermittent energy sources like wind and solar. These benefits include low operational and maintenence costs, reliable baseload capacity, low environmental impact, and a longer energy production lifespan.
Some negative aspects of geothermal energy, particularly within Enhanced Geothermal Systems (EGS), present challenges such as the risk of induced seismicity and significant water usage. Kiani noted that the substantial amounts of water required for cooling and reinjection processes, especially in water-scarce regions, could present challenges.
According to The Narwhal, Alberta is prone to long periods of drought, which are expected to become more frequent as rainfall decreases and Rocky Mountain glaciers shrink at accelerating rates.
Within this context, Eavor’s innovative closed-loop system offers a significant advantage over EGS technology by not requiring substantial water use. In fact, Eavor is currently developing up to 200 MWe of geothermal power through a cooperative agreement with Sonoma Clean Power in Northern California, a region that places crucial importance on developing clean energy with minimal water use.
Eavor achieves this by utilizing the thermosiphon effect, a natural process where cold, dense water and hot, less-dense water circulate within the wellbores without the need for excess water or pumps. This approach ensures sustainable and efficient geothermal energy production while addressing water scarcity concerns.
