CEG · 10-Q · 2026Q3 · Full report
Nuclear Decommissioning Obligations
Constellation Energy Corp · 2026-11-09 · Importance 69 · Surprise 50
The nuclear decommissioning asset retirement obligation decreased from $12,908 million at December 31, 2025 to $12,223 million at September 30, 2026. A $1,150 million net decrease from changes in estimated future cash flows included a $1,277 million decrease, primarily from revised assumed retirement dates for Calvert Cliffs, FitzPatrick, Limerick, and Nine Mile Point. The 2026 updates reduced operating and maintenance expense for the nine months ended September 30, 2026, although the amount of that expense reduction is not specified in the provided text. Nuclear decommissioning trust funds totaled $20,447 million at September 30, 2026, up from $19,396 million at year-end 2025.
Key facts
- As of September 30, 2026, the Crane NDT was fully funded under the SAFSTOR scenario, the planned decommissioning option.
- As of September 30, 2026, Constellation Energy had adequate NDT funds for remaining radiological decommissioning costs at Zion Nuclear Station related to its Independent Spent Fuel Storage Installation; other-than-radiological decommissioning costs may require company funding.
- Constellation’s nuclear decommissioning asset retirement obligation declined from $12,908 million at December 31, 2025 to $12,223 million at September 30, 2026.
- Constellation’s nuclear decommissioning ARO decreased by a net $1,150 million during the nine months ended September 30, 2026, driven in part by a $1,277 million decrease primarily due to changes in assumed retirement dates for Calvert Cliffs, FitzPatrick, Limerick, and Nine Mile Point.
- Constellation’s nuclear decommissioning trust funds totaled $20,447 million as of September 30, 2026, compared with $19,396 million as of December 31, 2025.
- Constellation filed its annual decommissioning funding status report with the NRC in March 2026; it demonstrated adequate funding assurance as of December 31, 2025 for all units included.