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

Spain Negative Electricity Prices and Spikes, 2026

Day-ahead electricity prices in Spain were below zero for 693 hours (9.6% of hours) on 118 days in 2026 up to 2026-10-29 (29 October 2026). The lowest interval price was EUR -10.00/MWh on 2026-03-29 (29 March 2026) and the highest EUR 322.78/MWh on 2026-10-29 (29 October 2026). Prices are day-ahead, in EUR per MWh as published, and are not converted.

Key Facts

  • Day-ahead electricity prices in Spain were below zero for 693 hours (9.6% of hours) on 118 days in 2026 up to 2026-10-29 (29 October 2026). The lowest interval price was EUR -10.00/MWh on 2026-03-29 (29 March 2026) and the highest EUR 322.78/MWh on 2026-10-29 (29 October 2026).
  • The longest streak of consecutive days with a price below zero in Spain in 2026 was 16 days, from 2026-03-22 (22 March 2026) to 2026-04-06 (6 April 2026).
  • In October 2026 up to 2026-10-29 (29 October 2026), Spain had 8.75 hours below zero on 3 days.
  • Since 2025-09-25 (25 September 2025), the lowest price in Spain was EUR -10.00/MWh on 2026-03-29 (29 March 2026) and the highest EUR 322.78/MWh on 2026-10-29 (29 October 2026).

Hours Below Zero

Delivery days to 2026-10-29, local time
October 2026 to date8.75 hours
2026 to date693 hours
Share of hours, 20269.6%
Days below zero, 2026118 days
Spain negative prices and price extremes by period
PeriodDays with dataHours below zeroShare of hoursDays below zeroLongest streak of days
October 2026 to date 29 8.75 hours 1.3% 3 2 days (2026-10-24 to 2026-10-25)
2026 to date 302 693 hours 9.6% 118 16 days (2026-03-22 to 2026-04-06)
Since 2025-09-25 400 709.5 hours 7.4% 122 16 days (2026-03-22 to 2026-04-06)

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
Spain lowest and highest day-ahead price by period, with delivery day
PeriodLowest priceDelivery dayHighest priceDelivery day
October 2026 to date EUR -1.46/MWh 2026-10-25 (25 October 2026) EUR 322.78/MWh 2026-10-29 (29 October 2026)
2026 to date EUR -10.00/MWh 2026-03-29 (29 March 2026) EUR 322.78/MWh 2026-10-29 (29 October 2026)
Since 2025-09-25 EUR -10.00/MWh 2026-03-29 (29 March 2026) EUR 322.78/MWh 2026-10-29 (29 October 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.

Longest Run Below Zero, Last 7 Days

Unbroken market intervals

In the last 7 days of intervals held, the longest unbroken run of prices below zero in Spain lasted 6.25 hours, from 25 Oct 2026, 09:45 CET (UTC+01:00) to 25 Oct 2026, 16:00 CET (UTC+01:00), with a lowest price of EUR -1.46/MWh.

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 2026-10-29T22:45:00Z.

Hours Below Zero Each Day

Local delivery days, 2025-09-25 to 2026-10-29
Spain hours below zero per delivery day, 2025-09-25 to 2026-10-29 Hours per local delivery day in Spain with a day-ahead price below zero, from 2025-09-25 (25 September 2025) to 2026-10-29 (29 October 2026). The zone had 709.5 hours below zero over 400 days with data. 0 4 8 11 15 Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026
Hours per local delivery day in Spain with a day-ahead price below zero, from 2025-09-25 (25 September 2025) to 2026-10-29 (29 October 2026). The zone had 709.5 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
2025-10-043.5 hours
2025-10-057 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
2025-10-231.75 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
2025-11-084.25 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
2026-01-3112.5 hours
2026-02-010 hours
2026-02-020 hours
2026-02-030 hours
2026-02-040 hours
2026-02-052.75 hours
2026-02-066.75 hours
2026-02-078.5 hours
2026-02-0812.25 hours
2026-02-092 hours
2026-02-100 hours
2026-02-114.25 hours
2026-02-1211.5 hours
2026-02-132 hours
2026-02-1414.25 hours
2026-02-159 hours
2026-02-164 hours
2026-02-171 hour
2026-02-180 hours
2026-02-197 hours
2026-02-206.75 hours
2026-02-212.75 hours
2026-02-227 hours
2026-02-235.75 hours
2026-02-245.75 hours
2026-02-255.25 hours
2026-02-266.5 hours
2026-02-271.5 hours
2026-02-283.5 hours
2026-03-017.25 hours
2026-03-020 hours
2026-03-030 hours
2026-03-040 hours
2026-03-050 hours
2026-03-060 hours
2026-03-070 hours
2026-03-080 hours
2026-03-090 hours
2026-03-100 hours
2026-03-110 hours
2026-03-124 hours
2026-03-135.25 hours
2026-03-140.25 hours
2026-03-159.5 hours
2026-03-167 hours
2026-03-176.75 hours
2026-03-182 hours
2026-03-192.75 hours
2026-03-200 hours
2026-03-210 hours
2026-03-227.25 hours
2026-03-233.25 hours
2026-03-243.25 hours
2026-03-257 hours
2026-03-269.25 hours
2026-03-279.25 hours
2026-03-2810 hours
2026-03-2910.5 hours
2026-03-308 hours
2026-03-319 hours
2026-04-019.25 hours
2026-04-029.5 hours
2026-04-039 hours
2026-04-048.25 hours
2026-04-059.25 hours
2026-04-068.5 hours
2026-04-070 hours
2026-04-080 hours
2026-04-095 hours
2026-04-100 hours
2026-04-114.25 hours
2026-04-124 hours
2026-04-135.75 hours
2026-04-146 hours
2026-04-155.75 hours
2026-04-160.5 hours
2026-04-170 hours
2026-04-186.5 hours
2026-04-198.5 hours
2026-04-200 hours
2026-04-214.25 hours
2026-04-225.5 hours
2026-04-235 hours
2026-04-240 hours
2026-04-253 hours
2026-04-268.25 hours
2026-04-275.25 hours
2026-04-280 hours
2026-04-290 hours
2026-04-300 hours
2026-05-016.75 hours
2026-05-021 hour
2026-05-033.5 hours
2026-05-040 hours
2026-05-050 hours
2026-05-060 hours
2026-05-070 hours
2026-05-080 hours
2026-05-090 hours
2026-05-107.5 hours
2026-05-110 hours
2026-05-120 hours
2026-05-132.5 hours
2026-05-141 hour
2026-05-151.75 hours
2026-05-168 hours
2026-05-170.5 hours
2026-05-180 hours
2026-05-190 hours
2026-05-205.5 hours
2026-05-216.5 hours
2026-05-224 hours
2026-05-237.75 hours
2026-05-248 hours
2026-05-257.25 hours
2026-05-264.5 hours
2026-05-271.25 hours
2026-05-280 hours
2026-05-290 hours
2026-05-304.25 hours
2026-05-315.75 hours
2026-06-010 hours
2026-06-025 hours
2026-06-037 hours
2026-06-045.75 hours
2026-06-050 hours
2026-06-065.75 hours
2026-06-078.25 hours
2026-06-080 hours
2026-06-096.5 hours
2026-06-107.25 hours
2026-06-116 hours
2026-06-127.25 hours
2026-06-138.75 hours
2026-06-148.25 hours
2026-06-150 hours
2026-06-160 hours
2026-06-170 hours
2026-06-180 hours
2026-06-190 hours
2026-06-204.75 hours
2026-06-216.5 hours
2026-06-220 hours
2026-06-230 hours
2026-06-240 hours
2026-06-250 hours
2026-06-260 hours
2026-06-271.75 hours
2026-06-280 hours
2026-06-290 hours
2026-06-300 hours
2026-07-010 hours
2026-07-025.75 hours
2026-07-034.75 hours
2026-07-048.25 hours
2026-07-056 hours
2026-07-060 hours
2026-07-070 hours
2026-07-080 hours
2026-07-090 hours
2026-07-100 hours
2026-07-112 hours
2026-07-127 hours
2026-07-130 hours
2026-07-140 hours
2026-07-150 hours
2026-07-160 hours
2026-07-170 hours
2026-07-180 hours
2026-07-193.5 hours
2026-07-200 hours
2026-07-210 hours
2026-07-220 hours
2026-07-230 hours
2026-07-240 hours
2026-07-257.25 hours
2026-07-269.25 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
2026-08-024.75 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
2026-08-094.5 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
2026-08-224.75 hours
2026-08-238 hours
2026-08-240 hours
2026-08-250 hours
2026-08-260 hours
2026-08-270 hours
2026-08-280 hours
2026-08-297.5 hours
2026-08-307.75 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
2026-09-060 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
2026-09-135.25 hours
2026-09-140 hours
2026-09-150 hours
2026-09-160 hours
2026-09-170 hours
2026-09-180 hours
2026-09-196.25 hours
2026-09-207 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
2026-09-273.5 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
2026-10-101.5 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
2026-10-241 hour
2026-10-256.25 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
Spain 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 6.00/MWh EUR 199.34/MWh
October 2025 31 12.25 hours 3 EUR -2.64/MWh EUR 230.00/MWh
November 2025 30 4.25 hours 1 EUR -0.45/MWh EUR 170.01/MWh
December 2025 31 0 hours 0 EUR 0.50/MWh EUR 165.50/MWh
January 2026 31 12.5 hours 1 EUR -0.50/MWh EUR 200.00/MWh
February 2026 28 130 hours 22 EUR -4.00/MWh EUR 187.10/MWh
March 2026 31 121.5 hours 19 EUR -10.00/MWh EUR 250.00/MWh
April 2026 30 131.25 hours 21 EUR -7.51/MWh EUR 157.47/MWh
May 2026 31 87.25 hours 19 EUR -3.00/MWh EUR 210.00/MWh
June 2026 30 88.75 hours 14 EUR -2.10/MWh EUR 185.90/MWh
July 2026 31 53.75 hours 9 EUR -2.00/MWh EUR 290.00/MWh
August 2026 31 37.25 hours 6 EUR -2.10/MWh EUR 268.97/MWh
September 2026 30 22 hours 4 EUR -1.14/MWh EUR 300.00/MWh
October 2026 29 8.75 hours 3 EUR -1.46/MWh EUR 322.78/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). Spain Negative Electricity Prices and Spikes, 2026. https://worldpowermonitor.com/prices/negative/es/

Plain text

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

BibTeX 
@misc{wpm_prices_negative_es_2026,
  title = {{Spain 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/es/}
}

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

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