Mens strømprisene er vinter-høye: Frysperiode for å bytte strømleverandør – Nå er det sjokkpris på strøm – og du nektes å bytte strømleverandør – Dagbladet

Svenske Energimyndigheten har testet solcellemoduler og vekselrettere på vinterforhold Source: Stor test: Disse solcellene er best for norske forhold – Tu.no

You would think that the more sunlight that hits a solar panel, the better. When it comes to efficiency though, that’s not the case – as photovoltaic cells heat up their efficiency decreases. To capture that heat and put it to good use, a team of scientists from Brunel University London has created a hybrid…

energibrønn Source: Jordvarme: Hvordan fungerer jordvarme? | Thermia

Source: Bulgaria Guide: Heating & Air-conditioning, Heathing systems and costs: As a mountainous country Bulgaria has