Editing Reykjavík (section)

===District heating===
{{see also|Geothermal power in Iceland}}
[[File:"Under-floor heating" in the street.jpg|thumb|Geothermally powered snow-melting system being installed on Skólavörðustígur, Reykjavík.]]
Volcanic activity provides all of Reykjavík and surrounding areas with [[Geothermal energy|geothermal]] [[district heating]] systems for both residential and industrial districts. In heavily trafficked areas, mostly in the city centre, pavements and streets use geothermal [[snow-melting system]]s. Many driveways of private residences are also fitted with geothermal snow-melting systems. Geothermal hot water is also used to heat the city's numerous public pools and hot tubs. Natural hot water is used to heat roughly 90% of all buildings in Iceland.<ref>{{cite web |title=Geothermal Energy – Orkustofnun |url=https://orkustofnun.is/natural_resources/geothermal_energy |access-date=19 January 2024 |website=Geothermal Energy – Orkustofnun}}</ref> Of total annual use of geothermal energy of 39 [[Joule|PJ]], space heating accounted for 48%.<ref>{{cite web |url=http://www.nea.is/geothermal/direct-utilization/ |title=NEA.is |publisher=NEA.is |access-date=25 July 2012 |archive-url=https://web.archive.org/web/20120724215329/http://www.nea.is/geothermal/direct-utilization |archive-date=24 July 2012 |url-status=live}}</ref>

The total thermal capacity of Reykjavíks hot water production is around 830MW, and the city has an average heating demand of 473 MW.<ref>{{Cite web |last=Gretar Ívarsson |date=April 2019 |title=Hitaveita í Reykjavík – Vatnsvinnsla 2018 |url=https://eu-assets.contentstack.com/v3/assets/blt5bf0023ca96cf071/bltbf89141dc99c4d9e/63a45186de61af37ca1576a9/hitaveita_i_reykjavik_-_vatnsvinnsla_2018.pdf}}</ref> Hot water for Reyjavík's [[district heating]] comes from two [[combined heat and power]] (CHP) [[geothermal power]] plants as well as lower temperature geothermal fields:<ref>{{cite web |url=http://www.mannvit.com/GeothermalEnergy/DistrictHeating/DistrictHeatinginIceland/ |title=Mannvit |publisher=Mannvit |access-date=25 July 2012 |archive-url=https://web.archive.org/web/20111007194242/http://www.mannvit.com/GeothermalEnergy/DistrictHeating/DistrictHeatinginIceland/ |archive-date=7 October 2011 |url-status=dead}}</ref>
* [[Nesjavellir]] CHP plant
* [[Hellisheiði Power Station|Hellisheiði]] CHP plant