Monthly market report
Czechia CZ — September 2025
Day-ahead auction, 726 settlement periods, computed from the same data the API serves.
Average price
92.14 €/MWh
+15.14 vs previous month
Negative prices
23 hours
23 settlement periods below 0
Avg daily spread
190.25 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
56.06 €/MWh
Extremes
- Cheapest period
- -53.4 €/MWh Sep 7, 11:00 UTC
- Priciest period
- 413.66 €/MWh Sep 8, 17:00 UTC
Top spike days
- 2025-09-08max 413.66 €/MWh
- 2025-09-19max 409.24 €/MWh
- 2025-09-29max 402.21 €/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 CZ
- → 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.