Monthly market report
Great Britain GB — June 2025
Day-ahead auction, 1,430 settlement periods, computed from the same data the API serves.
Average price
67.58 €/MWh
-1.89 vs previous month
Negative prices
57 hours
114 settlement periods below 0
Avg daily spread
90.1 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
38.86 €/MWh
Extremes
- Cheapest period
- -55.96 €/MWh Jun 22, 11:00 UTC
- Priciest period
- 208.36 €/MWh Jun 30, 18:00 UTC
Top spike days
- 2025-06-30max 208.36 €/MWh
- 2025-06-25max 168.88 €/MWh
- 2025-06-18max 137.85 €/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.