Monthly market report
Portugal PT — May 2025
Day-ahead auction, 744 settlement periods, computed from the same data the API serves.
Average price
25.85 €/MWh
+0.1 vs previous month
Negative prices
4 hours
4 settlement periods below 0
Avg daily spread
59.17 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
23.07 €/MWh
Extremes
- Cheapest period
- -1 €/MWh May 18, 14:00 UTC
- Priciest period
- 134.99 €/MWh May 29, 19:00 UTC
Top spike days
- 2025-05-29max 134.99 €/MWh
- 2025-05-30max 130.19 €/MWh
- 2025-05-13max 128.07 €/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.