The Greek electric system enters a new era with the installation of the first power storage units with batteries. In 2026 approximately 700 MW of storage power are expected to be put into service. In April the first stations of Energy Technique in Kozani and Komotini began testing, followed by Rener Energy projects. Large groups such as MORE, PPC, Helleniq Energy and Metlen develop important storage projects. The batteries will store energy from RES at low demand hours and re-discharge it when prices increase, balancing the system and reducing energy costs.

The Greek electric system successfully passed the Easter 2026 test, despite a low demand and high output coincidence from RES that created a surplus of up to 3-4 GW. There was the preparation with a meeting on Great Wednesday under the ministers of S. Papastavrou and N. Tsafos, as well as daily monitoring through teleconferences. IPTO used exports, RES teleregulation and pumping units, while storage systems were first used. The HEDNO achieved impressive progress, increasing remote-controlled stations from 1,638 (2.286 MW) in 2025 to 6,200 (5.4 GW) in 2026, reducing network interventions from 14 to 7 days.