The first industrial power-to-gas plant is built in Dietikon
The groundbreaking ceremony for the first industrial-scale power-to-gas plant in Switzerland has taken place on the Limmattal Limeco regional works in Dietikon. Starting in December, it will feed renewable gas into the grid.
The showcase project for the use of renewable energies is being developed in collaboration between eight energy suppliers and the Swisspower public utility alliance. The project aims to show how power-to-gas systems can complement renewable electricity production and operate economically, according to a media release . The largest power-to-gas plant in Switzerland to date will have an electrolysis capacity of 2.5 megawatts and will feed synthetic renewable gas into the grid from winter 2021 to 2022.
The operating principle of the new plant is described in the communication as follows: “The power-to-gas plant uses renewable electricity from the waste incineration plant to produce hydrogen. This is mixed with the CO2 in the sewage gas, creating renewable methane gas. Limeco thus gains a CO2-neutral energy source from waste and wastewater. ”In the existing gas network, the renewable gas replaces fossil energy sources. According to the information, this can save 4,000 to 5,000 tons of CO2 annually.
At the groundbreaking ceremony for the construction project, Stefano Kunz, Chairman of the Board of Directors of Limeco and City Councilor of Schlieren: "With waste recycling and wastewater treatment at the same location, we have the perfect conditions to produce green gas." Ronny Kaufmann, CEO of the Swisspower public utility alliance, which who co-initiated the project, says: "The project shows: We have to work together for a renewable and climate-neutral energy system, across company boundaries." The Federal Office of Energy ( SFOE ) is supporting the project as part of its pilot and demonstration program.
Systems like the one being built in Dietikon are important for the implementation of the Energy Strategy 2050. The plan is to replace the electricity from nuclear power with solar, water and wind power. This means that much more electricity will be produced in the summer than consumed. In winter, on the other hand, when the energy demand is greater, Switzerland has to import electricity. Power-to-gas is a key technology for storing excess renewable electricity seasonally.