4 FAQs about Geothermal energy pros and cons

What are the risks of geothermal energy?

Water contamination risks: Geothermal fluids sometimes contain dissolved minerals or heavy metals that could contaminate local groundwater if not properly managed. Surface subsidence: Long-term extraction of geothermal fluids can cause gradual ground settling, potentially affecting nearby infrastructure. Solar energy wins for accessibility.

How much does geothermal energy cost?

Utility-scale solar energy maxes out at $1,250/kWh, and wind maxes out at $1,550/kWh, making geothermal electricity significantly more expensive upfront than other common renewable options. Even compared to combined-cycle gas plants, geothermal energy is four to six times as expensive initially.

How long does geothermal energy last?

Unlike solar energy, geothermal systems have extremely small land footprints but can cause minor earthquakes and surface instability. Geothermal heating and cooling systems offer homeowners energy independence with lifespans of 20-50+ years, though installation requires significant initial investment. What is geothermal energy?

Is geothermal energy more environmentally friendly?

According to the Intergovernmental Panel on Climate Change (IPCC), the median life-cycle CO₂ emissions for various energy sources are as follows: These figures highlight that geothermal energy emits substantially less CO₂ compared to coal and natural gas, making it a more environmentally friendly option.

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