In 2006 the Technical Building Code (CTE) has come into force in Spain. The Code provides for a reduction of energy demand of buildings from architectural design and a reduction of conventional energy consumption through the use of solar thermal water to produce heating and photovoltaic panels to generate electricity.

90% of the world’s population lives less than 2,700 km from a desert. If less than 1% of the world’s deserts were used to concentrate solar power, enough electricity could be produced to supply the entire planet.

Reducing the energy requirements of buildings is an absolute priority in Europe. The energy demonstration project SARA has developed several public-access eco-buildings in France, Italy, Slovenia, Spain, UK and Uzbekistan.