Monthly market report
Portugal PT — August 2025
Day-ahead auction, 744 settlement periods, computed from the same data the API serves.
Average price
68.49 €/MWh
-1.54 vs previous month
Negative prices
24 hours
24 settlement periods below 0
Avg daily spread
109.75 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
42.17 €/MWh
Extremes
- Cheapest period
- -2.1 €/MWh Aug 3, 09:00 UTC
- Priciest period
- 170 €/MWh Aug 6, 19:00 UTC
Top spike days
- 2025-08-06max 170 €/MWh
- 2025-08-04max 168.02 €/MWh
- 2025-08-13max 155.1 €/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.