In a sulphurous episode of BBC Earth Lab, presenter Greg Foot happily treats himself to the hot tub-like waters of Iceland’s unique geology that makes water warm while the air is cold. This is due to the constantly shifting tectonic plates and continental divides, which release heat from the Earth’s core into the groundwater. The steam that rises from these shifts provide a copious amount of renewable, geothermal energy that fuels electricity for cities and the perfect conditions for greenhouse produce, particularly tomatoes.
Renewable energy provides almost all electricity in Iceland. But what is about Iceland’s unique geology that allows it to produce such cheap renewable energy?
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