Monthly market report
Sweden Sundsvall SE2 — September 2025
Day-ahead auction, 726 settlement periods, computed from the same data the API serves.
Average price
14.78 €/MWh
-5.91 vs previous month
Negative prices
14 hours
14 settlement periods below 0
Avg daily spread
37.3 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
24.69 €/MWh
Extremes
- Cheapest period
- -1.31 €/MWh Sep 21, 10:00 UTC
- Priciest period
- 220.87 €/MWh Sep 8, 18:00 UTC
Top spike days
- 2025-09-08max 220.87 €/MWh
- 2025-09-09max 218.51 €/MWh
- 2025-09-26max 103.82 €/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 SE2
- → 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.