This new 11 MW(th) Air-Water #HeatPump in Vermo, Espoo is the largest of it's kind in #Finland and a first step to 100MW Air-Source HPs on the #Fortum#DistrictHeating network in Espoo, Kauniainen and Kirkkonummi.
It was built last year next to a 160 MW oil-fired peak boiler. This week temperatures plunge below the design temperature -15°C of the #ASHP, so the peak boiler takes over. Luckily only for few days annually, and using bio-oil. #SectorCoupling#Wärmewende
@nemobis On the other hand, Fortum does have some bad experience with the failed 6km #DeepHeat borehole in Otaniemi. And they do recover heat from wastewater in Blominmäki and Suomenoja treatment plants, so that source seems exhausted.