Monthly market report
Norway Tromsø NO4 — October 2025
Day-ahead auction, 2,976 settlement periods, computed from the same data the API serves.
Average price
4.52 €/MWh
+0.26 vs previous month
Negative prices
32.3 hours
129 settlement periods below 0
Avg daily spread
12.46 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
6.3 €/MWh
Extremes
- Cheapest period
- -26.4 €/MWh Oct 2, 16:45 UTC
- Priciest period
- 65.4 €/MWh Oct 23, 10:00 UTC
Top spike days
- 2025-10-23max 65.4 €/MWh
- 2025-10-30max 62.93 €/MWh
- 2025-10-29max 31.28 €/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 NO4
- → 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.