Monthly market report
Ireland (SEM) IE-SEM — August 2025
Day-ahead auction, 744 settlement periods, computed from the same data the API serves.
Average price
96.31 €/MWh
-3.3 vs previous month
Negative prices
0 hours
0 settlement periods below 0
Avg daily spread
81.01 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
43.56 €/MWh
Extremes
- Cheapest period
- 0 €/MWh Aug 4, 12:00 UTC
- Priciest period
- 288.98 €/MWh Aug 22, 07:00 UTC
Top spike days
- 2025-08-22max 288.98 €/MWh
- 2025-08-21max 250 €/MWh
- 2025-08-23max 175 €/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 IE-SEM
- → 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.