It will be required to install photovoltaic panels on the roofs in the German town of Marburg, 80,000 souls north of Frankfurt. In addition to incentives, to push on renewable with effect from 1 October 2008 required owners to install just puts hand to the roof for any work: new buildings obviously will have to mount them mandatory.

He established the municipal coalition of Social Democrats and Green imposing fines of over 1,000 euros to those who will not later. According to calculations, enough for 15 years amortize investments of at least one solar panel every 20 square metres of roof.

There are discussions policies: there are those who argued that the measure will trend and soon will be copied in other cities while there is the Christian Democrats speak of dictatorship environmentalist. In Italy, the 2008 budget already speaks of “mandatory installations” but not specifically mentions the obligation to install them in every work of maintenance for buildings (both for individuals and for businesses). A system of incentives and financing facilitated banks in Germany as in the rest of Europe, is already active to help individuals more reluctant to digest these new charges.