If 30 years ago a mid-range car would run at ten litres of petrol per 100 kilometres, today, a hybrid model only needs a little over three. That’s an incredible evolution for the transport sector which nowadays boasts super efficient, electric and hybrid cars, built with reusable components (such as Renault’s transmissions and engines manufactured in the Choisy-le-Roi plant). Unfortunately, in the building sector, in the residential constructions where we live or work, things have taken a completely different turn. Even the most recent buildings mostly employ the same technologies and plants they were using 30 years ago: oil or gas boilers, mediocre insulation and no smart energy management system. Basically we are still building in the same way as we used to in the...