Poland's effective CM payment dropped 61% despite the headline auction price doubling

Effective capacity market payment per kW of installed capacity for a 4-hour battery (€/kW/yr)
Source: NESO, Terna, PSE, RTE, Modo Energy
Note: Effective payment = auction clearing price × derating factor, converted to EUR. GB uses £1 = €1.18. Poland uses PLN 1 = €0.23. France's current certificate mechanism has near-zero value; new centralised auction starts winter 2026/27.
MODOENERGY