Monthly market report
Great Britain GB — May 2025
Day-ahead auction, 1,488 settlement periods, computed from the same data the API serves.
Average price
69.47 €/MWh
-7.26 vs previous month
Negative prices
36.5 hours
73 settlement periods below 0
Avg daily spread
64.61 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
30.07 €/MWh
Extremes
- Cheapest period
- -18.24 €/MWh May 29, 12:30 UTC
- Priciest period
- 133.64 €/MWh May 8, 18:30 UTC
Top spike days
- 2025-05-08max 133.64 €/MWh
- 2025-05-09max 133.31 €/MWh
- 2025-05-07max 126.04 €/MWh
Work with this data
- → Full 15-minute history via API (2015 onwards)
- → Battery arbitrage backtest against this month's prices
- → Live forecast accuracy for GB
- → Embed the live price chart on your site — free
Data source: ENTSO-E Transparency Platform (transparency.entsoe.eu). Data source: SMARD.de, Bundesnetzagentur | CC BY 4.0. Derived statistics are Voltcast own-IP output.