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Data as of 2026-10-29
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Built 2026-10-28 (28 October 2026)

Slovenia Negative Electricity Prices and Spikes, 2026

Day-ahead electricity prices in Slovenia were below zero for 236.75 hours (3.3% of hours) on 56 days in 2026 up to 2026-10-29 (29 October 2026). The lowest interval price was EUR -485.77/MWh on 2026-05-01 (1 May 2026) and the highest EUR 1,096.86/MWh on 2026-06-30 (30 June 2026). Prices are day-ahead, in EUR per MWh as published, and are not converted.

Key Facts

  • Day-ahead electricity prices in Slovenia were below zero for 236.75 hours (3.3% of hours) on 56 days in 2026 up to 2026-10-29 (29 October 2026). The lowest interval price was EUR -485.77/MWh on 2026-05-01 (1 May 2026) and the highest EUR 1,096.86/MWh on 2026-06-30 (30 June 2026).
  • The longest streak of consecutive days with a price below zero in Slovenia in 2026 was 6 days, from 2026-04-04 (4 April 2026) to 2026-04-09 (9 April 2026).
  • In October 2026 up to 2026-10-29 (29 October 2026), Slovenia had 0 hours below zero on 0 days.
  • Since 2025-09-25 (25 September 2025), the lowest price in Slovenia was EUR -485.77/MWh on 2026-05-01 (1 May 2026) and the highest EUR 1,096.86/MWh on 2026-06-30 (30 June 2026).

Hours Below Zero

Delivery days to 2026-10-29, local time
October 2026 to date0 hours
2026 to date236.75 hours
Share of hours, 20263.3%
Days below zero, 202656 days
Slovenia negative prices and price extremes by period
PeriodDays with dataHours below zeroShare of hoursDays below zeroLongest streak of days
October 2026 to date 29 0 hours 0.0% 0 0 days
2026 to date 302 236.75 hours 3.3% 56 6 days (2026-04-04 to 2026-04-09)
Since 2025-09-25 400 237 hours 2.5% 57 6 days (2026-04-04 to 2026-04-09)

Hours are time weighted, so 15 minute and 60 minute intervals count alike. Share of hours divides by 24 times the days with data, so it is approximate on clock change days. A streak is consecutive local days each with at least one interval below zero, not a continuous run of hours.

Source: ENTSO-E Transparency Platform (transparency.entsoe.eu), CC BY 4.0. Aggregated and converted by World Power Monitor; ENTSO-E does not endorse this site. (ENTSO-E Terms of Use plus CC BY 4.0 for listed data items) Data as of 2026-10-29. Computed by World Power Monitor from the day-ahead price statistics of each local delivery day.

Lowest and Highest Prices

EUR/MWh, single market interval
Slovenia lowest and highest day-ahead price by period, with delivery day
PeriodLowest priceDelivery dayHighest priceDelivery day
October 2026 to date EUR 10.87/MWh 2026-10-03 (3 October 2026) EUR 529.23/MWh 2026-10-29 (29 October 2026)
2026 to date EUR -485.77/MWh 2026-05-01 (1 May 2026) EUR 1,096.86/MWh 2026-06-30 (30 June 2026)
Since 2025-09-25 EUR -485.77/MWh 2026-05-01 (1 May 2026) EUR 1,096.86/MWh 2026-06-30 (30 June 2026)

The lowest and highest prices are single market intervals of 15 or 60 minutes, not daily averages. The delivery day is the local day the interval belongs to.

Source: ENTSO-E Transparency Platform (transparency.entsoe.eu), CC BY 4.0. Aggregated and converted by World Power Monitor; ENTSO-E does not endorse this site. (ENTSO-E Terms of Use plus CC BY 4.0 for listed data items) Data as of 2026-10-29.

Hours Below Zero Each Day

Local delivery days, 2025-09-25 to 2026-10-29
Slovenia hours below zero per delivery day, 2025-09-25 to 2026-10-29 Hours per local delivery day in Slovenia with a day-ahead price below zero, from 2025-09-25 (25 September 2025) to 2026-10-29 (29 October 2026). The zone had 237 hours below zero over 400 days with data. 0 3 5 8 10 Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026
Hours per local delivery day in Slovenia with a day-ahead price below zero, from 2025-09-25 (25 September 2025) to 2026-10-29 (29 October 2026). The zone had 237 hours below zero over 400 days with data.
Daily hours through 2026-10-29
Show the data table (400 rows)
Delivery day (local)Hours below zero
2025-09-250 hours
2025-09-260 hours
2025-09-270 hours
2025-09-280 hours
2025-09-290 hours
2025-09-300 hours
2025-10-010 hours
2025-10-020 hours
2025-10-030 hours
2025-10-040 hours
2025-10-050.25 hours
2025-10-060 hours
2025-10-070 hours
2025-10-080 hours
2025-10-090 hours
2025-10-100 hours
2025-10-110 hours
2025-10-120 hours
2025-10-130 hours
2025-10-140 hours
2025-10-150 hours
2025-10-160 hours
2025-10-170 hours
2025-10-180 hours
2025-10-190 hours
2025-10-200 hours
2025-10-210 hours
2025-10-220 hours
2025-10-230 hours
2025-10-240 hours
2025-10-250 hours
2025-10-260 hours
2025-10-270 hours
2025-10-280 hours
2025-10-290 hours
2025-10-300 hours
2025-10-310 hours
2025-11-010 hours
2025-11-020 hours
2025-11-030 hours
2025-11-040 hours
2025-11-050 hours
2025-11-060 hours
2025-11-070 hours
2025-11-080 hours
2025-11-090 hours
2025-11-100 hours
2025-11-110 hours
2025-11-120 hours
2025-11-130 hours
2025-11-140 hours
2025-11-150 hours
2025-11-160 hours
2025-11-170 hours
2025-11-180 hours
2025-11-190 hours
2025-11-200 hours
2025-11-210 hours
2025-11-220 hours
2025-11-230 hours
2025-11-240 hours
2025-11-250 hours
2025-11-260 hours
2025-11-270 hours
2025-11-280 hours
2025-11-290 hours
2025-11-300 hours
2025-12-010 hours
2025-12-020 hours
2025-12-030 hours
2025-12-040 hours
2025-12-050 hours
2025-12-060 hours
2025-12-070 hours
2025-12-080 hours
2025-12-090 hours
2025-12-100 hours
2025-12-110 hours
2025-12-120 hours
2025-12-130 hours
2025-12-140 hours
2025-12-150 hours
2025-12-160 hours
2025-12-170 hours
2025-12-180 hours
2025-12-190 hours
2025-12-200 hours
2025-12-210 hours
2025-12-220 hours
2025-12-230 hours
2025-12-240 hours
2025-12-250 hours
2025-12-260 hours
2025-12-270 hours
2025-12-280 hours
2025-12-290 hours
2025-12-300 hours
2025-12-310 hours
2026-01-010 hours
2026-01-020 hours
2026-01-030 hours
2026-01-040 hours
2026-01-050 hours
2026-01-060 hours
2026-01-070 hours
2026-01-080 hours
2026-01-090 hours
2026-01-100 hours
2026-01-110 hours
2026-01-120 hours
2026-01-130 hours
2026-01-140 hours
2026-01-150 hours
2026-01-160 hours
2026-01-170 hours
2026-01-180 hours
2026-01-190 hours
2026-01-200 hours
2026-01-210 hours
2026-01-220 hours
2026-01-230 hours
2026-01-240 hours
2026-01-250 hours
2026-01-260 hours
2026-01-270 hours
2026-01-280 hours
2026-01-290 hours
2026-01-300 hours
2026-01-310 hours
2026-02-010 hours
2026-02-020 hours
2026-02-030 hours
2026-02-040 hours
2026-02-050 hours
2026-02-060 hours
2026-02-070 hours
2026-02-080 hours
2026-02-090 hours
2026-02-100 hours
2026-02-110 hours
2026-02-120 hours
2026-02-130 hours
2026-02-140 hours
2026-02-150 hours
2026-02-160 hours
2026-02-170 hours
2026-02-180 hours
2026-02-190 hours
2026-02-200 hours
2026-02-210 hours
2026-02-220 hours
2026-02-230 hours
2026-02-240 hours
2026-02-250 hours
2026-02-260 hours
2026-02-270 hours
2026-02-283.5 hours
2026-03-013.5 hours
2026-03-020 hours
2026-03-030 hours
2026-03-040 hours
2026-03-050 hours
2026-03-065 hours
2026-03-074.75 hours
2026-03-082 hours
2026-03-090.25 hours
2026-03-101.75 hours
2026-03-110 hours
2026-03-120 hours
2026-03-130 hours
2026-03-145 hours
2026-03-150 hours
2026-03-160 hours
2026-03-170 hours
2026-03-180 hours
2026-03-190 hours
2026-03-200 hours
2026-03-210 hours
2026-03-220.25 hours
2026-03-230 hours
2026-03-240 hours
2026-03-250 hours
2026-03-260 hours
2026-03-270 hours
2026-03-280 hours
2026-03-290 hours
2026-03-300 hours
2026-03-310 hours
2026-04-010 hours
2026-04-020 hours
2026-04-030 hours
2026-04-041 hour
2026-04-0510 hours
2026-04-068 hours
2026-04-074.75 hours
2026-04-085 hours
2026-04-094 hours
2026-04-100 hours
2026-04-116 hours
2026-04-122.75 hours
2026-04-136.5 hours
2026-04-140 hours
2026-04-150 hours
2026-04-160 hours
2026-04-170 hours
2026-04-184.75 hours
2026-04-193 hours
2026-04-200 hours
2026-04-210 hours
2026-04-221.25 hours
2026-04-235.5 hours
2026-04-245.25 hours
2026-04-257.75 hours
2026-04-269.75 hours
2026-04-273.5 hours
2026-04-280 hours
2026-04-290 hours
2026-04-302.75 hours
2026-05-017.75 hours
2026-05-026.75 hours
2026-05-035 hours
2026-05-041.5 hours
2026-05-050 hours
2026-05-060 hours
2026-05-070 hours
2026-05-080 hours
2026-05-092 hours
2026-05-105.75 hours
2026-05-110 hours
2026-05-120 hours
2026-05-130 hours
2026-05-140 hours
2026-05-150 hours
2026-05-160 hours
2026-05-170 hours
2026-05-180 hours
2026-05-190 hours
2026-05-202 hours
2026-05-212 hours
2026-05-220 hours
2026-05-236.5 hours
2026-05-247.75 hours
2026-05-250 hours
2026-05-260.25 hours
2026-05-270 hours
2026-05-280 hours
2026-05-290 hours
2026-05-304.25 hours
2026-05-312.75 hours
2026-06-010 hours
2026-06-020 hours
2026-06-030 hours
2026-06-040 hours
2026-06-050 hours
2026-06-063.25 hours
2026-06-079.75 hours
2026-06-080 hours
2026-06-090 hours
2026-06-100 hours
2026-06-110 hours
2026-06-120 hours
2026-06-139 hours
2026-06-148.75 hours
2026-06-150 hours
2026-06-160 hours
2026-06-170 hours
2026-06-180 hours
2026-06-190 hours
2026-06-203.25 hours
2026-06-211.75 hours
2026-06-220 hours
2026-06-230 hours
2026-06-240 hours
2026-06-250 hours
2026-06-260 hours
2026-06-270 hours
2026-06-280 hours
2026-06-290 hours
2026-06-300 hours
2026-07-010 hours
2026-07-020 hours
2026-07-030 hours
2026-07-040.25 hours
2026-07-056.25 hours
2026-07-060 hours
2026-07-070 hours
2026-07-080 hours
2026-07-090 hours
2026-07-100 hours
2026-07-110 hours
2026-07-121 hour
2026-07-130 hours
2026-07-140 hours
2026-07-150 hours
2026-07-160 hours
2026-07-170 hours
2026-07-180 hours
2026-07-190 hours
2026-07-200 hours
2026-07-210 hours
2026-07-220 hours
2026-07-230 hours
2026-07-240 hours
2026-07-255 hours
2026-07-261.5 hours
2026-07-270 hours
2026-07-280 hours
2026-07-290 hours
2026-07-300 hours
2026-07-310 hours
2026-08-010 hours
2026-08-020 hours
2026-08-030 hours
2026-08-040 hours
2026-08-050 hours
2026-08-060 hours
2026-08-070 hours
2026-08-080 hours
2026-08-090 hours
2026-08-100 hours
2026-08-110 hours
2026-08-120 hours
2026-08-130 hours
2026-08-140 hours
2026-08-150 hours
2026-08-160 hours
2026-08-170 hours
2026-08-180 hours
2026-08-190 hours
2026-08-200 hours
2026-08-210 hours
2026-08-220 hours
2026-08-230.25 hours
2026-08-240 hours
2026-08-250 hours
2026-08-260 hours
2026-08-270 hours
2026-08-280 hours
2026-08-290 hours
2026-08-304.75 hours
2026-08-310 hours
2026-09-010 hours
2026-09-020 hours
2026-09-030 hours
2026-09-040 hours
2026-09-050 hours
2026-09-063.5 hours
2026-09-070 hours
2026-09-080 hours
2026-09-090 hours
2026-09-100 hours
2026-09-110 hours
2026-09-120 hours
2026-09-130 hours
2026-09-140 hours
2026-09-150 hours
2026-09-160 hours
2026-09-170 hours
2026-09-180 hours
2026-09-190 hours
2026-09-202.25 hours
2026-09-210 hours
2026-09-220 hours
2026-09-230 hours
2026-09-240 hours
2026-09-250 hours
2026-09-260 hours
2026-09-274.5 hours
2026-09-280 hours
2026-09-290 hours
2026-09-300 hours
2026-10-010 hours
2026-10-020 hours
2026-10-030 hours
2026-10-040 hours
2026-10-050 hours
2026-10-060 hours
2026-10-070 hours
2026-10-080 hours
2026-10-090 hours
2026-10-100 hours
2026-10-110 hours
2026-10-120 hours
2026-10-130 hours
2026-10-140 hours
2026-10-150 hours
2026-10-160 hours
2026-10-170 hours
2026-10-180 hours
2026-10-190 hours
2026-10-200 hours
2026-10-210 hours
2026-10-220 hours
2026-10-230 hours
2026-10-240 hours
2026-10-250 hours
2026-10-260 hours
2026-10-270 hours
2026-10-280 hours
2026-10-290 hours

Source: ENTSO-E Transparency Platform (transparency.entsoe.eu), CC BY 4.0. Aggregated and converted by World Power Monitor; ENTSO-E does not endorse this site. (ENTSO-E Terms of Use plus CC BY 4.0 for listed data items) Data as of 2026-10-29.

Month by Month

First and latest months may be partial
Slovenia hours below zero, lowest and highest price by month
MonthDays with dataHours below zeroDays below zeroLowest priceHighest price
September 2025 6 0 hours 0 EUR 8.53/MWh EUR 380.62/MWh
October 2025 31 0.25 hours 1 EUR -0.02/MWh EUR 508.38/MWh
November 2025 30 0 hours 0 EUR 14.40/MWh EUR 361.01/MWh
December 2025 31 0 hours 0 EUR 47.66/MWh EUR 339.01/MWh
January 2026 31 0 hours 0 EUR 10.86/MWh EUR 400.76/MWh
February 2026 28 3.5 hours 1 EUR -0.44/MWh EUR 233.59/MWh
March 2026 31 22.5 hours 8 EUR -69.92/MWh EUR 355.32/MWh
April 2026 30 91.5 hours 18 EUR -465.05/MWh EUR 278.87/MWh
May 2026 31 54.25 hours 13 EUR -485.77/MWh EUR 376.33/MWh
June 2026 30 35.75 hours 6 EUR -52.99/MWh EUR 1,096.86/MWh
July 2026 31 14 hours 5 EUR -10.93/MWh EUR 451.45/MWh
August 2026 31 5 hours 2 EUR -0.81/MWh EUR 717.75/MWh
September 2026 30 10.25 hours 3 EUR -2.81/MWh EUR 633.56/MWh
October 2026 29 0 hours 0 EUR 10.87/MWh EUR 529.23/MWh

Prices are day-ahead, in EUR per MWh. A negative price means sellers pay to deliver electricity in that interval, usually when wind and solar output is high and demand is low; the explanation and the ranking of all zones are on the main page.

Source: ENTSO-E Transparency Platform (transparency.entsoe.eu), CC BY 4.0. Aggregated and converted by World Power Monitor; ENTSO-E does not endorse this site. (ENTSO-E Terms of Use plus CC BY 4.0 for listed data items) Data as of 2026-10-29.

Cite this page
APA 7

World Power Monitor. (2026). Slovenia Negative Electricity Prices and Spikes, 2026. https://worldpowermonitor.com/prices/negative/si/

Plain text

World Power Monitor. Slovenia Negative Electricity Prices and Spikes, 2026. Data as of 2026-10-29. Data from ENTSO-E Transparency Platform. https://worldpowermonitor.com/prices/negative/si/

BibTeX 
@misc{wpm_prices_negative_si_2026,
  title = {{Slovenia Negative Electricity Prices and Spikes, 2026}},
  author = {{World Power Monitor}},
  year = {2026},
  note = {Data as of 2026-10-29. Data from ENTSO-E Transparency Platform.},
  url = {https://worldpowermonitor.com/prices/negative/si/}
}

Permalink: https://worldpowermonitor.com/prices/negative/si/

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