Japan settled, with rules over said, 90% of building patrimony leaving from ‘50s. Practically half century of work. The same thing should happen in Europe, particularly in Italy.
But, at the problems of building, of town-planning, and of communications it is necessary to add that of alternate energy.
Algerian State covered with solar panels a zone of Sahara producing electric energy. It invited Europe to make the same thing. Anybody wishes produce electric energy in the Sahara can have concession by Algerian State. Italy could make so through ENI and ENEL.
Energy must be transported and the transport is another work to add to production.
Consequently petrol’s production would be reduced with advantage for surroundings.
These new energy should bring benefit to entire planet.