The winter timetable for Greece's dual-zone electricity tariff begins on Sunday 1 November 2026.
Consumers with the service activated can use six hours each day during which electricity is charged at their contract's reduced rate.
According to distribution-network operator HEDNO, the winter schedule remains in force until 31 March 2027, with one period at midday and another overnight.
Reduced-rate hours
From 1 November 2026 until the end of March 2027, the periods apply every day, including weekends and public holidays.
The midday period runs from noon to 3pm.
The overnight period runs from 2am to 5am.
Compared with the summer schedule, the midday period starts one hour later and the overnight period ends one hour later. The total remains six hours daily.
Using appliances during reduced-rate periods
The tariff allows households to lower electricity costs by moving some consumption into the reduced-rate hours.
Consumers on an appropriate plan can schedule washing machines, dishwashers and other high-consumption appliances during the midday period.
Electric water heating can also use the lower tariff where operation can be programmed appropriately and safely.
Savings vary, however, because the reduced price depends on the electricity supplier and each consumer's contract.
HEDNO determines the dual-zone operating hours. Suppliers set the price per kilowatt-hour.
Who receives the lower rate
The dual-zone system began on 1 February 2025, replacing the previous night-electricity arrangement.
Consumers who already had an activated reduced-rate tariff have been transferred to the new system. The change from summer to winter hours happens automatically, without a new application.
Anyone unsure whether their supply has active dual-zone billing can check through HEDNO's dedicated online service using the supply number shown on their electricity bill.
Applying for the service
Consumers not already enrolled can apply electronically through myHEDNO Services.
According to HEDNO, activation costs €47.26 plus VAT.
Before applying, consumers should examine their tariff's charges to establish whether shifting consumption into those periods could provide a meaningful financial benefit.
Return of summer hours
The winter timetable ends on 31 March 2027.
From 1 April 2027, summer hours return, with reduced-rate periods from 11am to 3pm and from 2am to 4am.
