Some companies already offer promising 'low-tech' energy solutions that were not so attractive when energy was cheap and abundant:
#Heliostorage uses #BoreholeThermalEnergyStorage to make #SolarHeat available in winter. Similar to #DrakeLanding in π¨π¦
https://heliostorage.com/how-it-works
https://www.dlsc.ca/
#SavoSolar has built many large #PitThermalEnergyStorage systems in Central Europe, but not yet Finland.
https://savosolar.com/
We should quickly ramp up such technologies.