
PEB Cover 75% of World’s Energy Demand 763
floors? Adaptations of roofs and fac¸ades with an integration of PV
installations allow an optimum use of solar energy. If 25 years
ago, solar-powered light vehicles were able to drive across whole
continents, and projects of CO
2
-free hotels and business buildings
were realised (see Figs. 44.1 and 44.50), these environmental-
friendly technologies should finally be implemented on a large scale,
especially in the building sector. Not only new buildings should be
PEB, but also refurbishments should result in PEB by preserving the
appearance of the townscape.
12th PEB conclusion: “domestic investments for jobs”
“