日本

Day-ahead prices, negative hours and the battery ceiling — daily, from real market data.

Average price: 108 €/MWh · Negative hours (2026-09-13): 0 · 2 h battery: 224 €

The negative-price, curtailment and grid-fee rules that drive Japan's battery economics.

Do you know your battery's ceiling?

We compute it for every ≥1 MW battery — independent, from public data.