Greek Net Metering Policy Update 2025

What changed in January 2025

Greece updated its net metering regulation (Ministerial Decision YPEN/EFKFB/157074/2021) with two significant changes effective January 2025:

Settlement period extended to 3 years. Previously, excess credits expired annually. Under the new rules, uncompensated injection credits carry forward for up to three years, giving prosumers more flexibility to offset high-consumption months with low-production winter credits.

Virtual net metering expanded. The virtual net metering scheme — which allows a PV system at one site to offset consumption at a separate but co-owned meter — is now available to agricultural cooperatives and multi-site commercial operators with up to five metering points.

Capacity limits unchanged

The existing 10.8 kWp residential cap and the 500 kWp commercial cap remain in place. Applications are still processed through the HEDNO online portal.

What this means for installers

The 3-year credit rollover significantly improves the economics for customers with high summer yield and moderate annual consumption. Battery storage remains economically strong for self-consumption optimization, but some customers who were battery-hesitant may now re-evaluate given the improved net-metering terms.

Trientec’s Greek team can assist with application documentation for installers new to the HEDNO process.