The greenest town in Germany: Watch the solar panels, sell electricity, make money.

Solar panels on the roof of the WA community public building. Reporter Ao Jun in Europe into Germany's most "green" town of Freiburg WA community--this newspaper Freiburg December 4 (Ao Jun) Soap box-like row of house uniform, small courtyard flower wall green rattan winding, the entrance also has a hippie angry green simple hut.　　It is hard to believe that this is the most "green" town in Germany ——— the WA community in Freiburg, if not the solar panels on the roofs of every household. The WA community, which is home to only 5000 people, is one of the few European Communities with more bicycles than cars and the only family that balances electricity consumption and electricity generation.　　Originality of energy-saving design and advanced environmental protection concept, so that this is Europe's low-carbon economy, a model of habitat. Residents "sell electricity" to the government standing on the hilly slopes south of Freiburg, the dark blue solar panels have become the most conspicuous symbol of the WA community.　　Here, almost all public buildings, including office buildings, supermarkets, parking lots on the roof of the installation of large solar panels, residential roofs, mostly equipped with solar panels, they are known as "Sunflower House" or "Solar Boat house." However, the solar panels on the rooftop of the residents are not for their own home, but "return" to the city power supply system, and gain. Every year, with solar panels on the roofs, each household "sells electricity" earns 6000 euros. The installation of a battery panel and transmission equipment is costly and costs about € 540,000. But the city government promised 1 years 6000 euros to buy electricity for residents, 20 years unchanged.　　The electricity and heating of the WA district is a small, nearby thermal power station that burns not coal but sawdust to reduce carbon emissions.　　70% of residents without private cars into the WA, the Community road, 30 km speed limit signs everywhere, and artificial set of piles and broken ends clearly tell you that the car is not welcome here. In fact, in WA, 70% of the residents do not have private cars and travel mainly by bicycles and trams. There is a 7-storey solar car park on the edge of the neighborhood, which is the main parking lot in the community, but parking fees can be as high as 17500 euros a year. As a result, more than half of the community residents joined the carpool club, with a yearly contribution of € 600.　　They hit or rent a car when they come across large items or travel. Energy-saving housing province 90% Electricity in Europe, the general residents of the household consumption of about 220 degrees per square meter a year, and Freiburg residential buildings average electricity consumption per square metre of 50 kwh. Since 1992, Freiburg has stipulated that all new residential energy-saving standards are 30% below the standard set by the German government.　　And in WA, there are more than 100 sets of super energy-saving housing, the annual electricity consumption is only 15 degrees per square metre. How to save electricity? Community residents said that the first residential walls have 30 centimeters of foam mezzanine, playing a sound insulation, insulation and warm function, the window is sealed three-storey windows, the most importantIs the ventilation design, the wall board has a flue through the roof, indoor and outdoor air through the flue circulation, keep the indoor winter warm summer cool.　　Although the cost of this energy-saving house is 10% higher than that of ordinary residences, energy efficiency is more than 90%.　　"A piece of white paper" was built WA from 1992 to 2007, despite a 10% increase in the population, Freiburg's carbon emissions fell 14%, with emissions expected to fall by 40% per cent by 2030, far exceeding the 20% per cent target set by EU leaders in December last year. The formation of WA Ecological District has its unique historical reasons. This was a German Nazi barracks, after the end of World War II, was taken over by the French Army until 1992 to return to Freiburg.　　In the 70 's, the German government planned to build a nuclear power plant 30 kilometers outside Freiburg, but was strongly opposed, the people of Freiburg launched a large-scale anti-nuclear protest demonstrations, the concept of environmental protection began to be deeply rooted. In the middle of the 90 's, it was a paradise of anarchists and hippies, crumbling.　　Freiburg decided to reclaim part of the land and housing, in "a piece of white paper", with a new concept of environmental protection, and from the city budget allocated funds, the old barracks energy-saving reform and residents of environmental protection measures to provide financial subsidies, only 2008 years to 500,000 euros. Education and tourism are the pillar industries of Freiburg, and there are no heavily polluting industries. In WA, the social level is more unitary, the residents of the community is mainly the University of Freiburg teachers and staff, belong to the income stability of the knowledge middle class, so in the concept of environmental protection is more consistent, many environmental protection measures, and no law enforcement, mainly by the residents of the community to maintain consciously.