Monthly market report
Ireland (SEM) IE-SEM — April 2026
Day-ahead auction, 386 settlement periods, computed from the same data the API serves.
Average price
118.73 €/MWh
-9.99 vs previous month
Negative prices
4 hours
4 settlement periods below 0
Avg daily spread
132.73 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
63.52 €/MWh
Extremes
- Cheapest period
- -10.04 €/MWh Apr 11, 12:00 UTC
- Priciest period
- 282.79 €/MWh Apr 8, 08:00 UTC
Top spike days
- 2026-04-08max 282.79 €/MWh
- 2026-04-05max 274.88 €/MWh
- 2026-04-07max 254.21 €/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.