First Greek batteries to claim up to EUR 157.000 per MW in 2026

The first standalone batteries to enter the system in Greece will get significant income, according to the Operator of Renewable Energy Sources & Guarantees of Origin (DAPEEP).

In its latest study, the company examined various scenarios. The main case is a 75% income exceedance from the baseline. Specifically, batteries with a two-hour storage duration may attract EUR 157,057 per MW annually, as long as they operate for the entire year of 2026. This, of course, is hypothetical, as the first batteries are expected to enter commercial operation from late spring onwards.

In the case of units with four hours of storage, income is seen at EUR 100,885 per MW per year, though they would operate in the second half of 2026.

The first standalone batteries have already been installed and currently await a green light from the authorities to start operations. In fact, investors have already complained because of the delay. They also warned that idle time damages batteries and reduces their capacity.

In total, 700 MW from the country’s three auctions is set to become the first batch late in the first half of 2026, followed in later years by 4.7 GW by units with no government support.

Double revenue stream

DAPEEP noted that operating income for batteries would be provided in part from the wholesale market and in part from the balancing market. The difference between the minimum and maximum hourly price is the primary driver for profits, while batteries may also provide services to balance the system.

In the beginning, the day-ahead and intraday markets will supply about 65% of income, but later on in the year, this will be reduced to 40%. DAPEEP expects that wholesale profits will not be affected by the initial flood of projects. On the other hand, the balancing market will be more sensitive to the added capacity of standalone storage.