Farms generate vast quantities of manure, which, as it ferments, releases methane – a greenhouse gas 28 times more potent than carbon dioxide. With an on-farm biogas plant of the type installed in this project, the fermentation process is carefully controlled. The resulting methane is collected and piped to a cogeneration plant to produce both heat and electricity. The 6.8 million kilowatt-hours (kWh) of electricity generated annually by this Vaud-based project – enough to power 1,700 households for a year – is fed into the grid. Around 4,400,000 kWh of residual heat per year is used in nearby factories and to sanitize food waste.
This project, which is ISO 14064-2 certified, saves around 3,500 metric tons of CO2 equivalent emissions per year. Because on-farm biogas plants provide a year-round source of renewable energy, they help reduce the dependency of Swiss farmers on imported fossil fuels while actively supporting sustainable development in the region.