United Kingdom

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

Today's market · 2026-07-21

138

Average price £/MWh

115

Minimum £/MWh

168

Maximum £/MWh

Negative hours

🌡️

London: 18°C now (today 17–27°C)
cooling demand lifts evening peaks

What a battery could have earned with perfect foresight — a neutral benchmark.

50 £

2 h battery · 2026-07-21

74 £

4 h battery · 2026-07-21

105

Average price £/MWh

Hours with negative price

-36

Minimum £/MWh

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