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Local sustainability initiatives
Please see our local or city pages via the Germany category, where of course you can share any more information you may have about local sustainability initiatives.
Initiatives by topic
Wikipedia: Germany, Biodiversity
In September 2010, the German government announced a new aggressive energy policy including the target of reducing CO2 emissions 40% below 1990 levels by 2020 and 80% below 1990 levels by 2050 
Community currencies activism
wikipedia:Chiemgauer, regional local currency started in 2003 in Prien am Chiemsee, Bavaria, Germany. It is named after the Chiemgau, a region around the Chiemsee. The Chiemgauer program is intended to promote local commerce and non-profits.
Sustainable community energy system
In 1997, people of Wildpoldsried, in some cases acting as individuals, began a series of projects that produce renewable energy. The first efforts were wind turbines and biomass digesters for cogeneration of heat and power. In the time since, new work has included a number of energy conservation projects, more wind and biomass use, small hydro plants, photovoltaic panels on private houses, and district heating. Tied to this are ecological flood control and wastewater systems.
Today, the effects of this are an unforeseen level of prosperity resulting in construction of nine new community buildings, including a school, gymnasium, and community hall, complete with solar panels. There are three companies operating four biogas digesters with a fifth under construction. There are seven windmills with two more on the way. One hundred and ninety private households are equipped with solar, which pays them dividends. The district heating network has 42 connections. There are three small hydro power plants. Wildpoldsried now produces 321 percent more energy than it needs and is generating 4.0 million Euro in annual revenue. At the same time, there has been a 65% reduction in the town’s carbon footprint. W
Münster in North Rhine-Westphalia claims to be the bicycle capital of Germany. It states that in 2007, vehicle traffic (36.4%) fell below traffic by bicycle (37.6%), even though it is unclear how such a figure is defined. The city maintains an extensive network for bicycles including the popular "Promenade" which encircles Münster's city centre. While motorised vehicles are banned, there are paths for pedestrians. Additional bicycle paths link all city districts with the inner city and special traffic lights provide signals for bicyclists. Bicycle stations in Münster offer bicycle rentals. 
Urban Foraging in Germany
In 2009, Kai Gidhorn was regularly picking apples while cruising on his bike through the backcountry of Berlin, Germany. Because he wanted to remember the good spots, he plotted them on a map. And because he also wanted to share that with friends, he made it a collaborative map online. Slowly, the map grew as people added more fruit trees in public spaces to it. One thing lead to another, and Mundraub ("theft of food") was born. Now the Berlin-based initiative has more than 40,000 registered users in Germany and Austria.
The practice in itself — foraging and gleaning — is not new. Still, it was forgotten, particularly in cities. Thanks to Mundraub's collaborative mapping (or so it seems), the practice is now re-emerging in Germany. People have become used to maps to relate to their environment and find their way. This is not limited to the German-speaking world. Falling Fruit, a similar platform in the U.S. has a global reach and has collected probably the largest data repository of fruit trees globally, tapping on the crowd as well as open data. To sum it up, the idea of urban foraging is to crowdsource a map of growing edibles, reconnect ourselves to our edible urban landscape, and, if possible, get free food. But this isn't just about taking.
Mundraub staff work with children and adults to share literacy about edibles and plant growth. They also offer tours to uncover new edibles, organize collective harvests, and make apple juice and cider, giving people a taste of DIY projects. In December of 2016, in Pankow, a borough of Berlin, urban foragers struck a deal with the local government to plant and take care of fruit trees in a public park.
Fruit trees are usually not favored by municipalities because they require intensive care. While the number is humble — twelve trees — this is quite a ground-breaking achievement when one considers the tradition of top-down management of German city administrations. Consider that in most German cities, in order to pick up fruits from public trees you are supposed to ask permission to the municipality. In Berlin-Pankow, not only have urban foragers received a bulk authorization to pick fruits from any public tree, but also the right to take care of the planted trees, which includes pruning.
"We are currently in an experimentation phase: If it's successful, if citizens take good care of the trees, then we are ready to open more land for such direct involvement of citizens," says Andreas Johnke, director of the municipal service in charge of streets and green spaces of the Berlin-Pankow borough. This is just a start, one borough, twelve trees planted, but Mundraub plans to do the same everywhere in Germany, and many cities already have shown interest. The goal is to get 200 cities by the end of 2017 to open up their tree cadasters and grant bulk authorization to citizens to pick up edibles without needing to ask. And in March, Mundraub also collaborated with a supermarket to let citizens plant five fruit trees in the parking lot, blurring the line between private and public space. 
Münster: Urban Ecology Educational Walk (Werkstatt-Stadt)
News and comment
How Essen has thrown off its heavy industrial past to become a model of sustainability, Jun 26 
How Residents of Hamburg Reclaimed the Power Grid, Jun 21 
German Nonprofit Creates New Open-Source License for Seeds, May 22 
From coal city to European Green Capital - Essen's extreme makeover, Jan 2 
The village that just wants to share, Dec 11 
Germany wakes up to the issue of waste with reusable coffee cups, Nov 22 
German coalition agrees to cut carbon emissions up to 95% by 2050, Nov 11 
Germany has unveiled plans for a 0 emmisions, hydrogen train, Nov 2 
The People's Forest, Oct 5 
Hamburg Creates a Vibrant Neighborhood by Creating Spaces for People, Jul 14 
German government agrees to ban fracking after years of dispute, Jun 24 
The 4th Largest Economy In The World Just Generated 90 Percent Of The Power It Needs From Renewables, May 9 
Germany’s New Bike Highways, February 18 
Germany Launches Its Ambitious National 'Bike Autobahn' Cycle Network, January 4 
Hannover: City of Possibilities, October 5 
Essen wins European Green Capital 2017, June 18 
How big can a community wind farm be? May 11 
Germany to ban fracking for seven years, July 5 
Germany Sets New Record, Generating 74 Percent Of Energy Needs From Renewable Energy, May 14 
Aluminium recycling in Germany hits 89%, February 26 
Hamburg’s Plan to Eliminate Cars in 20 Years, January 7 
Germany’s stunning environmental movement, November 12 
Hamburg's answer to climate change, The German city is planning a green network that will cover 40% of the city area, contributing to resilience and allowing biking, swimming and nature watching in the city,  October 31
Hamburg Votes in Favour of Remunicipalisation of Electricity, Gas and District Heating Distribution Grids, September 24 
German Autobahn to be Covered with Giant Public Park,  November 30
Bonn Center for Local Climate Action and Reporting - carbonn - aims at facilitating the access of local governments to climate benchmarking instruments on a global scale.  December 14
German village (Juhnde) goes off-grid ready,  Oct 17
Mapped: How Germany generates its electricity carbonbrief.org
Local communities in Germany