A pilot project in Thuringia has successfully installed a compact medium-voltage series regulator to increase the capacity of existing power lines and accommodate more electricity from photovoltaic systems, allowing for around 260% more PV capacity without immediate grid expansion. Thüga plans to offer this technology to distribution system operators across Germany and Europe, with Hitachi Energy manufacturing the devices in Poland. This regulator is viewed as a cost-effective complement to existing grid technologies, potentially saving operators hundreds of millions of euros in expansion costs by 2035. Thüga highlights the importance of system interaction for efficiently integrating renewable energy sources.