Henri HornApr 4, 2024

Construction of the world's largest heat storage facility #Varanto to begin in June in Vantaa, Finland. Surplus heat from the adjacent Waste2Energy plant in summer can be stored for winter use. This #CavernThermalEnergyStorage also features two 60 MW electric boilers to use cheap #WindPower when available.

90 GWh, Tmax 140 °C, water volume 1.100.000 m2 cost 200 M€ incl. 19 M€ govt. grant, but no updates on schedule
#SeasonalStorage
#VECTES

https://www.vantaanenergia.fi/vantaan-energia-aloittaa-maailman-suurimman-lammon-kausivaraston-varannon-rakentamistyot-vantaalla/
https://afry.com/en/newsroom/news/planning-worlds-largest-seasonal-heat-storage-well-under-way

Vantaan Energia aloittaa maailman suurimman lämmön kausivaraston ”Varannon” rakentamistyöt Vantaalla | Vantaan Energia

Vantaan Energia aloittaa maailman suurimman lämmön kausivaraston ”Varannon” rakentamistyöt Vantaalla

Vantaan Energia
Show threadHenri HornJan 22, 2024
@nemobis I have also wondered why Fortum is unwilling to build large ground source heat pumps for #districtHeating. Perhaps they are still experimenting, and air-source HPs are both cheaper to procure and easier to relocate if necessary. #Lippulaiva shopping mall already has 4MW GSHP, so perhaps they consider it to be more potent competition to their district heat and generally oppose such development.
Also, Fortum is not building seasonal heat storage like Helen and Vantaan Energia #VECTES.