Greek electricity market shifts from green to fixed-price tariffs, DEI retains dominance

In 2025, Greek household electricity customers continued moving away from green‑price contracts toward fixed‑price plans. The share of households on green tariffs fell from 72.67% at the end of 2024 to 58% by December 2025, while fixed‑price contracts rose from 13.3% to 28.7% of the market. The Public Power Corporation (DEI) remains the leading supplier across all tariff types, holding 89.62% of green contracts, 44.19% of fixed‑price contracts, and 43.70% of variable (yellow) contracts. Competitors such as Protergia, ZeniΘ, Enerwawe (Helleniq Energy) and NRG gained ground, especially in the fixed‑price segment, where Protergia’s share grew to 17.93% and ZeniΘ to 13.43%. DEI added over 326,000 new meters but its market‑share fell by 7.43 percentage points in the fixed‑price category. The overall trend reflects consumers’ preference for price predictability and increasing competition among Greek electricity providers.