Of all the modelled solutions, rooftop solar delivers the largest annual reduction potential in Gelderland: 1,632 kton CO₂-eq toward 2030. This places the measure at the top of the list of fifteen climate opportunities, ahead of both onshore wind and zero-emission vehicles.
The leading position of rooftop solar reflects the large unused roof area in the province and the relatively short realisation time per project. The energy sector as a whole already shows roughly 31% realisation, suggesting this potential is partly in motion. Even so, a substantial share remains, partly because grid congestion and rising electricity demand slow the rollout. Source: Klimaatkansenkaart Gelderland 2025, New Economy (March 2025).