Negative electricity prices in Bulgaria
138.3
negative hours in 2026 (553 periods)
-100.63
all-time record €/MWh · May 1, 2025
9.8h
longest negative streak · from Jun 14, 2026
374
negative hours all-time (history to 2015)
Monthly negative hours — last 16 months
Most negative days on record
| Date | Negative hours | Deepest price (€/MWh) |
|---|---|---|
| 2026-06-14 | 9.8 | -10.00 |
| 2026-06-07 | 9.0 | -5.00 |
| 2026-04-26 | 8.8 | -99.75 |
| 2026-06-13 | 8.8 | -34.00 |
| 2026-04-05 | 8.3 | -50.00 |
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/bg"
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/Sofia). Updated 28 minutes ago.