Spain leads in negative price hours

Cumulative hours with mean wholesale price below 0 (h) and 7-day rolling minimum hourly price (€/MWh)

Source: ESIOS, ENTSO-E, Nord Pool, Modo Energy • Get the data behind this chart

Note: 15-min day-ahead rows (ES/DE from 2025-10-01, PL from mid-2025) are averaged to hourly before counting; Italy is the unweighted hourly average of its seven bidding zones. The rolling minimum is floored at 0 when no hour went negative.

MODOENERGY