German power prices spike during a December Dunkelflaute

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A prolonged period of very low wind and negligible solar output across north-western Europe during December 2024 drives German day-ahead electricity prices to extreme levels, with peak hours clearing above nine hundred euros per megawatt-hour — of the order of ten times a typical clearing price. Imports, gas, coal, hydro and demand response supply the shortfall; the battery fleet discharges and is then exhausted. The episode is included as an observation rather than an argument: it measures the residual, and it shows that the residual is defined by rare multi-day weather rather than by the average day. The exact peak figure and the precise dates are stated here as magnitudes and a month because no market data source was retrievable in this session.

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