Monthly market report
Switzerland CH — September 2025
Day-ahead auction, 720 settlement periods, computed from the same data the API serves.
Average price
96.33 €/MWh
+17.33 vs previous month
Negative prices
15 hours
15 settlement periods below 0
Avg daily spread
70.85 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
26.81 €/MWh
Extremes
- Cheapest period
- -46.35 €/MWh Sep 7, 11:00 UTC
- Priciest period
- 189.26 €/MWh Sep 19, 17:00 UTC
Top spike days
- 2025-09-19max 189.26 €/MWh
- 2025-09-30max 161 €/MWh
- 2025-09-04max 156.91 €/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 CH
- → 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.