Kalundborg Eco-industrial Park, Industrial symbiosis network in Kalundborg, Denmark.
Kalundborg Eco-Industrial Park is an industrial area where multiple factories and power plants share their waste products and energy surpluses with one another. Heat left over from the power station warms homes and fish farms, while byproducts move to other businesses for reuse.
The first facility here, a power station, began operating in 1959, and starting in 1972 companies began swapping their materials with one another. These partnerships grew gradually and naturally from the close location of the businesses.
The companies here work together in everyday operations, passing materials between each other rather than letting them go to waste. This approach has become a model that other industrial parks around the world study and try to copy.
You can drive through the area and see the different factories and pipes from outside, but there are no regular public tours inside the facilities. It works best to observe from the perimeter or arrange a visit in advance if you want to see operations up close.
None of these partnerships were planned or ordered by the government, but rather grew naturally because the businesses realized cooperation made financial sense. This makes this place an unexpected example of how practical innovation can start without any central direction.
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