By 2030, the ambition is that all district heating in Gothenburg, Sweden, will be produced by renewable or recovered energy sources. With this in mind Göteborg Energi and Siemens have come together in a cooperation agreement with the aim of testing state-of-the-art gas turbine technology that enables the operation of renewable fuels in the Rya combined heat and power (CHP) plant, which is today powered by natural gas.