How Iceland Turns Volcanic Heat Into Electricity — and CO₂ Into Stone #megaprojects #engineering

Iceland’s Hellisheiði Power Plant sits above an active volcanic system and uses deep geothermal heat to generate around 300 MW of electricity. Engineers drill wells several kilometres underground to bring up extremely hot pressurized geothermal water. As pressure drops, part of the water turns into steam, which is separated and used to drive turbines. The remaining geothermal heat is also used to warm clean groundwater for homes. But the most unusual part is what happens to gases like CO₂ and hydrogen sulfide. Instead of releasing them into the atmosphere, the gases are dissolved in water and injected into reactive volcanic rock, where they gradually become part of solid minerals underground.