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

Innebygget i takstein. Source: Nå kan du få solceller på taket – uten at det synes – 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