In their joint “VR4PV” project, the Fraunhofer CSP, the Fraunhofer IFF, DENKweit GmbH and Dexor Technology GmbH conducted research on how to reduce the operating costs of solar parks and thus generate solar energy more cost-effectively in the future. Using a digital twin, novel measurement methods and machine learning, the research partners succeeded in optimising the operational management of photovoltaic parks.