Editing Aarhus (section)

=== Environmental planning ===
{{main|Energy in Denmark}}
[[File:Rattling Reeds.jpg|thumb|[[Årslev Engsø]]. The lakes and wetlands of Årslev Engsø and [[Egå Engsø]] were re-established in the 2000s to help manage the water cycle.]]
<!--- Energy --->
Aarhus has increasingly been investing in [[environmental planning]] and, in accordance with national policy, aims to be {{CO2}}-neutral and independent of [[fossil fuel]]s for heating by 2030.<ref>{{cite web|url=https://stateofgreen.com/en/profiles/city-of-aarhus/solutions/co2-neutrality-by-2030-an-aim-for-a-growing-aarhus|title=CO2-neutrality by 2030 – an aim for a growing Aarhus|publisher=State of Green|access-date=10 June 2018|archive-date=15 May 2015|archive-url=https://web.archive.org/web/20150515224956/http://stateofgreen.com/en/profiles/city-of-aarhus/solutions/co2-neutrality-by-2030-an-aim-for-a-growing-aarhus|url-status=dead}}</ref><ref>{{cite web|url=http://www.aarhus.dk/sitecore/content/Subsites/CityOfAarhus/Home/activityareas/Climate-and-the-environment.aspx?sc_lang=da|title=Climate and the Environment|publisher=[[Aarhus Municipality]]|date=20 March 2012|access-date=10 June 2018|archive-date=12 June 2018|archive-url=https://web.archive.org/web/20180612142752/http://www.aarhus.dk/sitecore/content/Subsites/CityOfAarhus/Home/activityareas/Climate-and-the-environment.aspx?sc_lang=da|url-status=dead}}</ref> The municipal power plants were adapted for this purpose in the 2010s. In 2015, the municipality took over three private [[straw]]-fired heating plants and the year after, a new 77 [[Megawatt|MW]] [[combined heat and power]] biomass plant at [[Lisbjerg Power Station]] was completed while [[Studstrup Power Station]] finished a refit to move from coal to wood chips.<ref name="Østjydsk Halm">{{cite web |url=https://www.aarhus.dk/~/media/eDoc/1/3/0/1304008-1763186-1-pdf.pdf |title=Overtagelse af Østjydsk Halmvarmes halmvarmeværker |publisher=[[Aarhus Municipality]] |language=da |access-date=22 January 2017 |archive-url=https://web.archive.org/web/20171015095145/https://www.aarhus.dk/~/media/eDoc/1/3/0/1304008-1763186-1-pdf.pdf |archive-date=15 October 2017 |url-status=dead}}</ref><ref name="Grøn varme">{{cite web |url=https://www.aarhus.dk/sitecore/content/Subsites/affaldvarmeaarhus/Home/Om-AffaldVarme-Aarhus/NewsList/2016/3-kvartal/PM-Nu-er-varmen-groen.aspx?sc_lang=da |title=Nu er varmen grøn |publisher=[[Aarhus Municipality]] |language=da |access-date=22 January 2017 |archive-url=https://archive.today/20240528011909/https://www.webcitation.org/6nhdnvF1M?url=https://www.aarhus.dk/sitecore/content/Subsites/affaldvarmeaarhus/Home/Om-AffaldVarme-Aarhus/NewsList/2016/3-kvartal/PM-Nu-er-varmen-groen.aspx%3Fsc_lang=da |archive-date=28 May 2024 |url-status=live}}</ref> In conjunction with the development of the [[Aarhus Docklands|Docklands district]] there are plans for a utility-scale seawater [[heat pump]] which will take advantage of fluctuating electricity prices to supply the [[district heating]] system.<ref>{{cite web|url=https://www.aarhus.dk/sitecore/content/Subsites/affaldvarmeaarhus/Home/Varme/Varmeplan-Aarhus/Varmeproduktion/Energianlaeg-Aarhus-Oe.aspx?sc_lang=da|title=Energianlæg Aarhus Ø|trans-title=Energy plant Aarhus Ø|language=da|publisher=Aarhus Municipality|date=25 October 2016|access-date=10 June 2018|archive-date=12 June 2018|archive-url=https://web.archive.org/web/20180612142946/https://www.aarhus.dk/sitecore/content/Subsites/affaldvarmeaarhus/Home/Varme/Varmeplan-Aarhus/Varmeproduktion/Energianlaeg-Aarhus-Oe.aspx?sc_lang=da|url-status=dead}}</ref> Since 2015, the city has been implementing energy-saving [[LED]] technology in street lighting; by January 2019, about half of the municipal street lighting had been changed. Apart from reducing the city's {{CO2}} emissions, it saves 30% on the electricity bill, thereby making it a self-financed project over a 20-year period.<ref>{{cite web |url=https://aarhus.dk/nyt/teknik-og-miljoe/2019/januar-2019/aarhus-skriver-historie-med-nye-gadelamper/ |title=Aarhus skriver historie med nye gadelamper |language=da |publisher=Aarhus Municipality |trans-title=Aarhus writes history with new street lights |date=22 January 2019 |access-date=14 April 2019 |archive-date=14 April 2019 |archive-url=https://web.archive.org/web/20190414150342/https://aarhus.dk/nyt/teknik-og-miljoe/2019/januar-2019/aarhus-skriver-historie-med-nye-gadelamper/ |url-status=dead }}</ref>

<!--- Water --->
The municipality aims for a coherent and holistic administration of the [[water cycle]] to protect against, and clean up previous, pollution as well as encourage [[green growth]] and self-sufficiency. The main issues are [[nutrient pollution|excessive nutrients]], adapting to increased (and increasing) levels of precipitation brought on by [[climate change]], and securing the water supply.<ref name="VandVision">{{cite web |url=https://aarhus.dk/demokrati/politikker-og-planer/natur-og-miljoe/vandvision2100/ |title=Vand Vision 2100 |publisher=[[Aarhus Municipality]] |language=da |access-date=14 April 2019}}</ref> These goals have manifested in a number of large water treatment projects often in collaboration with private partners. In the 2000s, underground rainwater basins were built across the city while the two lakes [[Brabrand Lake|Årslev Engsø]] and [[Egå Engsø]] were created in 2003 and 2006 respectively. The number of [[sewage treatment]] plants is planned to be reduced from 17 to 2 by 2025, as the treatment plants in Marselisborg and Egå are scheduled for expansion to take over all waste water treatment. They have already been refitted for [[biogas]] production to become net producers of electricity and heat.<ref name="Marspower">{{cite web|url=https://www.newscientist.com/article/2114761-worlds-first-city-to-power-its-water-needs-with-sewage-energy/|title=World's first city to power its water needs with sewage energy|work=[[New Scientist]]|language=da|first=Kata |last=Karáth |date=1 September 2016 |access-date=14 April 2019}}</ref><ref name="Egåpower">{{cite web |url=http://www.aarhusportalen.dk/nyheder-om-miljoe-og-energi.asp?AjrDcmntId=42435 |title=Epokegørende teknologi får strømmen til at flyde |publisher=[[Aarhus Municipality]] |language=da |access-date=22 January 2017 |archive-url=https://web.archive.org/web/20160419090759/http://www.aarhusportalen.dk/nyheder-om-miljoe-og-energi.asp?AjrDcmntId=42435 |archive-date=19 April 2016 |url-status=dead}}</ref> To aid the new treatment plants, and avoid floodings, sewage and [[stormwater]] throughout the municipality is planned to be separated into two different drainage systems. Construction began in 2017 in several areas, but it is a long process that is scheduled to be finished by 2085.<ref name="SepKloak">{{cite web|url=https://aarhus.dk/borger/bolig-byggeri-og-miljoe/miljoe-og-kloak/vand-og-kloak/separatkloakering/|title=Separatkloakering|publisher=[[Aarhus Municipality]]|language=da|access-date=14 April 2019|archive-date=14 April 2019|archive-url=https://web.archive.org/web/20190414215822/https://aarhus.dk/borger/bolig-byggeri-og-miljoe/miljoe-og-kloak/vand-og-kloak/separatkloakering/|url-status=dead}}</ref><ref>{{cite web|url=http://www.aarhus.dk/da/borger/bolig-og-byggeri/Kommuneplanlaegning/~/media/Dokumenter/Teknik-og-Miljoe/Planlaegning-og-Byggeri/Kommuneplan/Klimatilpasningsplan-2014-december.pdf|title=Klimatilpasningsplan 2014 - Tilpasning til mere vand|language=da|publisher=Aarhus Municipality|access-date=27 October 2017|archive-url=https://web.archive.org/web/20171027125758/http://www.aarhus.dk/da/borger/bolig-og-byggeri/Kommuneplanlaegning/~/media/Dokumenter/Teknik-og-Miljoe/Planlaegning-og-Byggeri/Kommuneplan/Klimatilpasningsplan-2014-december.pdf|archive-date=27 October 2017|url-status=dead}}</ref>
 
<!--- Afforestation and rewilding --->
[[Afforestation]] projects have been undertaken to prevent [[groundwater pollution]], secure drinking water, [[carbon sequestration|sequester {{CO2}}]], increase [[biodiversity]], create an attractive countryside, provide easy access to nature and offer outdoor activities to the public. In 2000, the first project, the [[New Forests of Aarhus]], was completed, which aimed to double the forest cover in the municipality and, in 2009, another phase was announced to double forest cover once more before the year 2030.<ref name="Skov2020">{{cite web |url=https://aarhus.dk/media/5158/skovudviklingsplan-2010-2020.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://aarhus.dk/media/5158/skovudviklingsplan-2010-2020.pdf |archive-date=9 October 2022 |url-status=live|title=Skovudviklingsplan 2010 -2020 |publisher=[[Aarhus Municipality]] |language=da |access-date=14 April 2019}}</ref> The afforestation plans were realised as a local project in collaboration with private landowners, under a larger national agenda.<ref name="NyeSkove">{{cite web |url=http://www.aarhus.dk/sitecore/content/Subsites/gogreenwithaarhus/Home/Maal/Attraktiv-by/Nye-skove-sikrer-drikkevand-natur-og-friluftsliv.aspx?sc_lang=da |title=Nye skove sikrer drikkevand, natur og friluftsliv |publisher=[[Aarhus Municipality]] |language=da |access-date=22 January 2017 |archive-url=https://web.archive.org/web/20160207153418/http://www.aarhus.dk/sitecore/content/Subsites/gogreenwithaarhus/Home/Maal/Attraktiv-by/Nye-skove-sikrer-drikkevand-natur-og-friluftsliv.aspx?sc_lang=da |archive-date=7 February 2016 |url-status=live}}</ref> Other projects to expand natural habitats include a [[rewilding (conservation biology)|rewilding]] effort in [[Geding-Kasted Mose|Geding-Kasted Bog]] and continuous monitoring of [[List of protected areas of Aarhus Municipality|the four Natura 2000]] areas in the municipality.<ref>{{cite web|url=https://www.aarhus.dk/~/media/Dokumenter/Teknik-og-Miljoe/Natur-og-Miljoe/Natur-og-landskab/Naturkvalitetsplan/Naturkvalitetsplan-2013-2030.pdf|title=Naturkvalitetsplan 2013 - 2030|publisher=Aarhus Kommune|access-date=25 January 2023|language=da|archive-date=16 January 2017|archive-url=https://web.archive.org/web/20170116174519/https://www.aarhus.dk/~/media/Dokumenter/Teknik-og-Miljoe/Natur-og-Miljoe/Natur-og-landskab/Naturkvalitetsplan/Naturkvalitetsplan-2013-2030.pdf|url-status=dead}}</ref>