Energy from Waste

Pyrolysis Plant

At Green Solution House we produce energy from food leftovers. All food scraps and organic materials from the main building are fed into our own stationary pyrolysis plant, which likes all carbon based waste. The material is first dried and ground, then all oxygen is removed. The pyrolysis process heats the waste, breaking it down to produce natural gas and char. A cyclone separates off the gas leaving biochar, which sequesters carbon in a stable state. Biochar is valuable as an additive for the gardens as it improves soil health and water retention. The gas is combusted in a combined heat and power engine, generating heat and electricity to be used in the building. The system is self-supporting, and only requires a small amount of energy to start up. Excess heat is stored onsite as hot water in a swimming pool, repurposed as a thermal energy storage system.

Who’s behind it: 
Frichs A/S, GXN Innovation

Where you’ll find It:
In the Green Footprints Park, north of the main building.

The facts:
Green Solution House will release approximately 12.4 tons of dry material to the pyrolysis plant yearly. The plant has the capacity to process 1 ton of dry material over 6 hours which produces an output of 180 m³ of gas, 360 kWh of electricity, and 100 kg of biochar.