Reactor Atlas
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Monitoring · Outages

Outage calendar

Planned and extended outages with a known window — start and expected return —, for the next 12 months plus the last 3.

Forward windows come today from Elexon REMIT (Great Britain) and the announced start of the other real-time sources. Other countries appear as their sources publish windows.

in progress now

17

announced · next 90 days

0

MW affected now

13,556
All countriesFinland FinlandFrance FranceSlovakia SlovakiaSweden SwedenUnited Kingdom United Kingdom
All monthsJune 2026July 2026August 2026September 2026

FI Finland

August 2026

PlantStartExpected returnDaysSourceStatus
Loviisa2Aug 01, 2026Sep 27, 202657 daysentsoe-unavailability In progress

FR France

June 2026

PlantStartExpected returnDaysSourceStatus
Gravelines5Jun 19, 2026Jan 25, 2027220 daysentsoe-unavailability In progress

July 2026

PlantStartExpected returnDaysSourceStatus
ChoozB-2Jul 10, 2026Sep 17, 202669 daysentsoe-unavailability In progress

August 2026

PlantStartExpected returnDaysSourceStatus
ChoozB-1Aug 01, 2026Sep 17, 202647 daysentsoe-unavailability In progress
Cattenom1Aug 12, 2026Sep 16, 202635 daysentsoe-unavailability In progress
Gravelines4Aug 19, 2026Aug 30, 202612 daysentsoe-unavailability In progress
Cattenom1Aug 24, 2026Sep 16, 202623 daysentsoe-unavailability In progress

SK Slovakia

August 2026

PlantStartExpected returnDaysSourceStatus
Bohunice3Aug 28, 2026Sep 02, 20265 daysentsoe-unavailability In progress

September 2026

PlantStartExpected returnDaysSourceStatus
Bohunice3Sep 04, 2026Sep 08, 20263 daysentsoe-unavailability In progress

SE Sweden

September 2026

PlantStartExpected returnDaysSourceStatus
Forsmark1Sep 04, 2026Nov 17, 202674 daysentsoe-unavailability In progress

GB United Kingdom

July 2026

PlantStartExpected returnDaysSourceStatus
Torness2Jul 31, 2026Aug 18, 2026Returned to service: Aug 18, 202618 daysNuclear · Reino Unido Finished

August 2026

PlantStartExpected returnDaysSourceStatus
SizewellBAug 12, 2026Aug 13, 2026Returned to service: Aug 13, 20260 daysNuclear · Reino Unido Finished
Torness1Aug 21, 2026Sep 27, 202637 daysNuclear · Reino Unido In progress
Torness1Aug 21, 2026Sep 27, 202637 daysNuclear · Reino Unido Extended
HeyshamA1Aug 25, 2026Sep 27, 2026Returned to service: Sep 02, 202633 daysNuclear · Reino Unido Finished

September 2026

PlantStartExpected returnDaysSourceStatus
HartlepoolA2Sep 01, 2026Sep 13, 202612 daysNuclear · Reino Unido Extended
HeyshamA1Sep 02, 2026Sep 02, 2026Returned to service: Sep 02, 20260 daysNuclear · Reino Unido Finished
HartlepoolA2Sep 02, 2026Oct 04, 202632 daysNuclear · Reino Unido Extended
HartlepoolA2Sep 02, 2026Oct 04, 202632 daysNuclear · Reino Unido In progress
HeyshamA1Sep 02, 2026Sep 27, 2026Returned to service: Sep 02, 202626 daysNuclear · Reino Unido Finished
HeyshamB2Sep 03, 2026Nov 24, 202683 daysNuclear · Reino Unido In progress
HartlepoolA1Sep 03, 2026Sep 11, 20268 daysNuclear · Reino Unido Extended