Uppsett jarðvarmaraforksgeta Íslands er um 755 MW (2023) og stærstu virkjanirnar eru Hellisheiðarvirkjun (303 MW) og Nesjavallavirkjun (120 MW). Jarðvarmi sér um nærri 90% af húshitun landsins í gegnum hitaveitur, og Orkustofnun áætlar að ónýtt jarðvarmaorkugeta til raforkuframleiðslu sé á bilinu 1.500–2.000 MW.
Enska frumtextinn
Iceland has an installed geothermal electricity capacity of approximately 755 MW (2023), with the largest plants being Hellisheiðarvirkjun (303 MW) and Nesjavallavirkjun (120 MW). Geothermal energy also provides roughly 90% of space heating in Iceland through district heating systems, serving approximately 90% of households. The National Energy Authority estimates Iceland's unexploited geothermal potential for electricity at 1,500–2,000 MW, suggesting significant room for expansion. Iceland is the world leader in per capita geothermal energy use and one of few countries where geothermal provides a substantial share of both electricity and heating.
Heimild
Orkustofnun — Geothermal Development and Research in Iceland 2023
Orkustofnun er íslensk ríkisstofnun sem hefur eftirlit með orku- og auðlindamálum og gefur út tölfræði um orkuframleiðslu og orkunotkun á Íslandi.
Skoða heimild ↗Fyrirvarar
Geothermal resources are location-dependent and concentrated in volcanic zones. Expansion requires environmental impact assessments and can face local opposition. Some geothermal fields have shown declining pressure after decades of exploitation, requiring careful resource management.