CEG · 10-Q · 2026Q2 · Full report

Nuclear Decommissioning Obligations

Constellation Energy Corp · 2026-08-06 · Importance 45 · Surprise 50 · From source text

Nuclear decommissioning asset retirement obligations declined to $11,942 million at June 30, 2026 from $12,908 million at December 31, 2025. The $1,277 million decrease primarily reflected revised retirement dates for Calvert Cliffs, Fitzpatrick, Limerick and Nine Mile Point. The ARO update reduced operating and maintenance expense during the six months ended June 30, 2026. Nuclear decommissioning trust funds increased to $20,583 million from $19,396 million over the same period.

Key facts

• Balance of nuclear decommissioning ARO as of December 31, 2025: $12,908 million; net decrease due to changes in, and timing of, estimated future cash flows: $(1,277) million; Balance as of June 30, 2026: $11,942 million. source
• NDT funds totaled $20,583 million as of June 30, 2026 and $19,396 million as of December 31, 2025. source
• Payables related to Regulatory Agreement Units total $5,914 million as of June 30, 2026 and $5,334 million as of December 31, 2025; ComEd payable was $4,638 million as of June 30, 2026. source
• As of June 30, 2026, the Crane NDT is fully funded under the SAFSTOR scenario that is the planned decommissioning option. source
• As of June 30, 2026, Constellation has adequate NDT funds for the remaining radiological decommissioning costs at Zion Station related to the Independent Spent Fuel Storage Installation. source
• The $1,277 million net decrease in the ARO for the six months ended June 30, 2026 was driven primarily by changes in assumed retirement dates for Calvert Cliffs, Fitzpatrick, Limerick, and Nine Mile Point. source
• SNF Obligation carrying amount $1,454 and fair value $1,342 as of June 30, 2026. source

Impact estimates