Monthly market report
Portugal PT — October 2025
Day-ahead auction, 2,976 settlement periods, computed from the same data the API serves.
Average price
76.35 €/MWh
+14.59 vs previous month
Negative prices
8.5 hours
34 settlement periods below 0
Avg daily spread
113.9 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
43.9 €/MWh
Extremes
- Cheapest period
- -2.64 €/MWh Oct 5, 12:00 UTC
- Priciest period
- 230 €/MWh Oct 1, 18:30 UTC
Top spike days
- 2025-10-01max 230 €/MWh
- 2025-10-02max 225 €/MWh
- 2025-10-06max 182.59 €/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 PT
- → 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.