Siemens Energy and Göteborg Energi have successfully run a gas turbine in the Rya CHP plant using liquid biofuel instead of natural gas, thanks to breakthrough technology. This opens up new possibilities not just for the transformation of Rya KVV, but also for the production of sustainable power on a national and worldwide scale.
The renewable fuels project has been running since 2019 and has finally culminated in a successful biodiesel operational test. The facility was operated on hydrogenated vegetable oil (HVO), a diesel fuel made from renewable raw resources, for two days. This demonstrates that at a power plant like Rya KVV, both plant startup and stable operation using renewable fuel is possible.
Rya KVV is a district heating and power generator. The facility plays a vital part in Gothenburg’s electrical supply, among other things.
“By 2025, we want to be able to supply district heating that is fully renewable or recycled, and the transformation of Rya KVV is a big part of that. It is tremendously gratifying and crucial for the continued work that we have now been able to tangibly demonstrate the prospects with renewable fuels in gas turbines with Siemens Energy,” says Alf Engqvist, Chief Executive Officer of Göteborg Energi.
According to Hans Holmström, Chief Executive Officer of Siemens Energy, the company’s gas turbine technology may be utilized as both base power and balancing power, depending on the needs.
“We already can burn renewable fuels like biogas and large amounts of hydrogen in our gas turbines, and our goal is to be able to offer multiple options for operating 100 percent renewable, incorporating liquid fuels, shortly. Because many of our customers have gas turbines that supply balancing power now, and we expect this to grow in the coming years, liquid renewable fuels with limited storage capacity are a viable option.”
“Through our effective partnership in Rya KVV, we have demonstrated the viability of a sustainable fuel shift,” he says.
The project’s next phase will assess and apply the results of the experiments conducted as part of the ongoing development work on the liquid biofuels in gas turbines, with the goal of increasing fuel flexibility. The initiative examines, among other things, biofuels generated at Gothenburg refineries, which would cut Rya KVV’s transportation costs.
“Our aim is to operate the SGT-600, -700 as well as -800 gas turbine combustors 100% fossil-free, for instance with hydrogen, in the coming years,” stated Fors. “This is a unique collaboration between Siemens and a client that can demonstrate the diverse possibilities for ecological and cost-effective energies as our sector and societies aim to minimize carbon emissions across the world.”