Monthly market report
Greece GR — September 2025
Day-ahead auction, 726 settlement periods, computed from the same data the API serves.
Average price
92.78 €/MWh
+19.67 vs previous month
Negative prices
32 hours
32 settlement periods below 0
Avg daily spread
223.99 €/MWh
the arbitrage opportunity, day by day
Volatility (σ)
64.28 €/MWh
Extremes
- Cheapest period
- -14.79 €/MWh Sep 21, 11:00 UTC
- Priciest period
- 425.83 €/MWh Sep 29, 17:00 UTC
Top spike days
- 2025-09-29max 425.83 €/MWh
- 2025-09-09max 392.05 €/MWh
- 2025-09-30max 367.91 €/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 GR
- → 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.