"We don't want to save the World and we don't claim that Marburg will revolutionize climate action. But we must chart new territory in order to ensure a future supply of energy independent of oil and gas.... No south-facing roof will be left unused." Fritz Kahl, the Mayor of Mahberg, Germany (80,000 people) on the change in the city's building code that requires solar collection (thermal or PV) whenever a roof is renovated, a heating system replaced, or an addition made.
How will a home or a community be valued by the marketplace in the future? By the amount of solar energy it captures (via heating, PV, or photosynthesis). Changing building codes is gradual way to make your community more competitive, reduce exposure to risks, and improve property values.
This is a good example of one of the things that needs to be done to solve the energy problem -- distributed energy production on individual buildings. The example of this city in Germany needs to be adopted around the world.
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