Negative-price tracker · PT

Negative electricity prices in Portugal

511.0

negative hours in 2026 (2,044 periods)

-10.00

all-time record €/MWh · Mar 29, 2026

10.5h

longest negative streak · from Mar 29, 2026

906

negative hours all-time (to 2015)

Monthly negative hours — last 18 months

2024-08: 3 negative hours (min -0.95 €/MWh) 08 2024 2024-10: 3 negative hours (min -0.01 €/MWh) 10 2025-03: 21 negative hours (min -4.00 €/MWh) 03 21 2025-04: 104 negative hours (min -5.00 €/MWh) 04 104 2025-05: 4 negative hours (min -1.00 €/MWh) 05 2025-06: 10 negative hours (min -1.21 €/MWh) 06 10 2025-07: 13 negative hours (min -1.01 €/MWh) 07 13 2025-08: 24 negative hours (min -2.10 €/MWh) 08 24 2025-09: 14 negative hours (min -0.99 €/MWh) 09 14 2025-10: 8.5 negative hours (min -2.64 €/MWh) 10 2026-01: 12.5 negative hours (min -0.50 €/MWh) 01 2026 13 2026-02: 84.8 negative hours (min -4.00 €/MWh) 02 85 2026-03: 115 negative hours (min -10.00 €/MWh) 03 115 2026-04: 110.3 negative hours (min -7.51 €/MWh) 04 110 2026-05: 65.3 negative hours (min -2.10 €/MWh) 05 65 2026-06: 56.5 negative hours (min -2.00 €/MWh) 06 57 2026-07: 48.5 negative hours (min -2.00 €/MWh) 07 49 2026-08: 18.3 negative hours (min -2.10 €/MWh) 08 18

Most negative days on record

2026-02-14

14.5 h

-4.00 €

2026-01-31

12.5 h

-0.50 €

2026-02-08

12.3 h

-0.40 €

2026-03-29

10.5 h

-10.00 €

2024-06-02

10.0 h

-1.05 €

Download the data

Monthly aggregates, ready for a chart. Free to publish with attribution ("Voltcast").

Download CSV →

Embed the live counter

Drop this iframe into any article or dashboard — it stays live.

<iframe src="https://voltcast.com/embed/negative-prices/pt"
        width="360" height="180" frameborder="0"></iframe>

Negative prices are an opportunity — if you see them coming.

Our negative-price risk API gives P(price<0) per 15-minute period up to 14 days ahead, Brier-scored publicly. The negative_prices webhook fires seconds after the auction.

Data: ENTSO-E Transparency Platform · SMARD.de, Bundesnetzagentur. Zone-local time (Europe/Lisbon). Updated 0 seconds ago.

The monthly European power roundup

Negative-price records, the biggest spreads, which zones were hardest to forecast — every number computed from our production data, on the 2nd of each month. No filler, unsubscribe anytime.