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Constellation Energy Corp

CEGNasdaqElectric ServicesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026Score 11/302% above fair value
$257.25−5.13 (-1.96%)

Close on Nov 2, 2026Market cap $91.15BP/E 25.1Yield 0.15%

Constellation Energy Operated Nuclear Fleet Total Outage Days (days) by Quarter

Operated Nuclear Fleet Total Outage Days (days) (days)

QuarterlyAnnual

Constellation Energy Operated Nuclear Fleet Total Outage Days (days): 106 days in Q2 2026, up 68.3% from a year earlier.

Latest, Q2 2026
106
Period ended Jun 30, 2026
Change on a year earlier
+68.3%
63 in Q2 2025
History
22 quarters
Since Q1 2021
Sources
18
Documents cited below

Where the Q2 2026 figure comes from

“|| Total Outage Days | 106 | 63 | 205 | 151”

Source: Constellation Energy 8-K 2Q26 Release (0001868275-26-000097) ↗

Reported in Form 10-K / 10-Q MD&A & Form 8-K Earnings Release Operational Statistics.

Quarterly history

Hover a value to see the sentence it was read from; calculated values show their formula

PeriodEndedOperated Nuclear Fleet Total Outage Days (days) (days)Year on yearSource
Q2 2026Jun 30, 2026106+68.3%Constellation Energy 8-K 2Q26 Release (0001868275-26-000097) ↗
Q1 2026Mar 31, 202699+12.5%Constellation Energy 8-K 1Q26 Release (0001868275-26-000063) ↗
Q4 2025Dec 31, 202593+34.8%Constellation Energy 8-K 4Q25 Release (0001868275-26-000029) ↗
Q3 2025Sep 30, 202528-50.9%Constellation Energy 8-K 3Q25 Release (0001868275-25-000089) ↗
Q2 2025Jun 30, 202563+21.2%Constellation Energy 8-K 2Q26 Release (0001868275-26-000097) ↗
Q1 2025Mar 31, 2025880.0%Constellation Energy 8-K 1Q26 Release (0001868275-26-000063) ↗
Q4 2024Dec 31, 202469+9.5%Constellation Energy 8-K 4Q25 Release (0001868275-26-000029) ↗
Q3 2024Sep 30, 202457+90.0%Constellation Energy 8-K 3Q25 Release (0001868275-25-000089) ↗
Q2 2024Jun 30, 202452-56.3%Constellation Energy 8-K 2Q25 Release (0001868275-25-000070) ↗
Q1 2024Mar 31, 202488-7.4%Constellation Energy 8-K 1Q25 Release (0001868275-25-000040) ↗
Q4 2023Dec 31, 202363-7.4%Constellation Energy 8-K 4Q24 Release (0001868275-25-000020) ↗
Q3 2023Sep 30, 202330-3.2%Constellation Energy 8-K 3Q24 Release (0001868275-24-000064) ↗
Q2 2023Jun 30, 2023119+46.9%Constellation Energy 8-K 2Q24 Release (0001868275-24-000047) ↗
Q1 2023Mar 31, 202395+10.5%Constellation Energy 8-K 1Q24 Release (0001868275-24-000031) ↗
Q4 2022Dec 31, 202268-40.4%Constellation Energy 8-K 4Q23 Release (0001868275-24-000014) ↗
Q3 2022Sep 30, 202231+40.9%Constellation Energy 8-K 3Q23 Release (0001868275-23-000076) ↗

Breakdown

What makes up operated Nuclear Fleet Total Outage Days (days)

Cite this data

StockData. (2026). Constellation Energy Operated Nuclear Fleet Total Outage Days (days) (days), quarterly Q1 2021–Q2 2026 [Data set]. Compiled from Constellation Energy SEC filings and investor materials. https://stockdatahq.com/stocks/ceg/kpis/nuc-total-outage-days

See every metric in the Constellation Energy KPI table. Data updated Oct 26, 2026.