Vantage Energies · European power statistics
Portugal negative power price hours, August 2026
The number of hours with a negative day-ahead power price in the Portugal bidding zone (PT) in August 2026 was 38 hours, down 14 hours from July 2026 (52 hours).
38 hours · August 2026 · ENTSO-E Transparency Platform day-ahead prices (Nord Pool public data for the Nordic and Baltic zones), processed by Vantage Energies.
Published · Period to
Restated 26 October 2026: until then this page counted hours at or below 0 EUR/MWh.
Hours below 0 EUR/MWh, Portugal, August 2026
38 hours
Key facts
- Bidding zone
- Portugal (PT)
- Period
- 2026-08-01 to 2026-08-31
- Hours below 0 EUR/MWh
- 38
- Minimum hourly index price
- -2.10 EUR/MWh
What was the number of negative-price hours in Portugal in August 2026?
The number of hours with a negative day-ahead power price in the Portugal bidding zone (PT) in August 2026 was 38 hours, down 14 hours from July 2026 (52 hours). 38 hours · August 2026 · ENTSO-E Transparency Platform day-ahead prices (Nord Pool public data for the Nordic and Baltic zones), processed by Vantage Energies.
How does August 2026 compare with July 2026?
In Portugal, August 2026 was down 14 hours from July 2026 (52 hours). Both figures are computed the same way on the same source, so the comparison is like for like.
How does Portugal compare with other zones in August 2026?
Portugal ranked 21st lowest of 25 published zones for the number of negative-price hours in August 2026. The lowest value, 0 hours, was shared by 11 zones; the highest was Germany at 55 hours.
| Zone | Negative price hours |
|---|---|
| Estonia | 0 hours |
| Finland | 0 hours |
| Italy Calabria | 0 hours |
| Italy Centre-North | 0 hours |
| Italy Centre-South | 0 hours |
| Italy North | 0 hours |
| Italy Sardinia | 0 hours |
| Italy Sicily | 0 hours |
| Italy South | 0 hours |
| Latvia | 0 hours |
| Lithuania | 0 hours |
| Denmark West | 3 hours |
| Norway NO2 | 3 hours |
| Romania | 4 hours |
| Austria | 6 hours |
| Hungary | 8 hours |
| Switzerland | 13 hours |
| Czechia | 14 hours |
| Belgium | 24 hours |
| Poland | 29 hours |
| Portugal | 38 hours |
| Spain | 40 hours |
| France | 48 hours |
| Netherlands | 53 hours |
| Germany | 55 hours |
How is this statistic computed?
Vantage Energies counts every hour from 2026-08-01 to 2026-08-31 in which the Portugal (PT) day-ahead price, from auction prices published on the ENTSO-E Transparency Platform (Nord Pool public data for the Nordic and Baltic zones), was below 0 EUR/MWh, on CET/CEST wall-clock days. An hour at exactly 0 EUR/MWh does not count. From 1 October 2025, the count prices each hour at the mean of its four quarter-hour prices, or at the published hourly price for an hour without all four. The minimum is the lowest price on the hourly index, the figure the Vantage API reports. The hourly index is the zone's published hourly price, or the mean of the hour's four quarter-hour prices for an hour without one. A single quarter-hour can clear lower. A month with no such hour is a true zero, not missing data.
How should this figure be cited?
Cite it as "Vantage Energies, Portugal negative power price hours, August 2026, https://vantage-energies.com/stats/pt-negative-hours-2026-08". The permalink is permanent: it always covers August 2026, and this page states how its figure is computed. Restated 26 October 2026: until then this page counted hours at or below 0 EUR/MWh.
Vantage Energies, Portugal negative power price hours, August 2026, https://vantage-energies.com/stats/pt-negative-hours-2026-08