Limeco Power to Gas, Dietikon, CH

Switzerland’s first industrial Power-to-Gas (PtG) facility based on biological methanation has been in operation in Dietikon near Zurich since 2022. Owned and operated by Limeco and built by Kanadevia Inova Schmack the plant has been producing renewable gas from wastewater and waste since March 2022.

Located at Limeco’s existing waste and wastewater treatment site, the facility uses renewable electricity from the WtE plant to produce hydrogen via electrolysis. This hydrogen is then combined with CO₂ from sewage gas in Kanadevia Inova Schmack’s bioreactor, where microorganisms convert the mixture into methane. After purification, the resulting green gas is fed into the local grid, providing a CO₂-neutral substitute for natural gas. The plant’s output enables annual CO₂ savings equivalent to the emissions of approximately 2,000 households.

Developed in partnership with eight Swiss energy suppliers and the Swisspower utility alliance, the project serves as a landmark for Switzerland’s Energy Strategy 2050. By converting fluctuating renewable electricity into storable and transportable gas, the Dietikon PtG plant demonstrates how Power-to-Gas technology can strengthen energy security, support decarbonization, and set a precedent for future renewable gas projects across the country.