01—Abstract
Summary
Summary of the 8-K filed November 12, 2025. Cited figures are marked; the original filing is the authoritative source.
Duke Energy Carolinas (DEC), a subsidiary of Duke Energy Corporation (DUK), reached a partial settlement on November 11, 2025 with the South Carolina Office of Regulatory Staff and other intervenors in its base rate case before the Public Service Commission of South Carolina (PSCSC).
The rate case was originally filed July 1, 2025, requesting roughly $151 milliona in annual retail revenue increases (about 7.7%) at a 10.85% return on equity. The Stipulation resolves all revenue requirement issues and reduces the base revenue increase to approximately $74 million, with a net increase of about $19 million (roughly 1.0% average retail increase) after a $55 million credit from the nuclear and production tax credit (PTC) rider. Key settlement terms include a 9.99% return on equity, a 53% equity / 47% debt capital structure, an overall rate of return of 7.41%, and a South Carolina retail rate base of $7.9 billion (versus the $8.1 billion requested).
The settlement also supports an increase in the annual storm reserve funding from $5 million to $10 millionb and a proposed pension cost rider intended to reduce future volatility in pension expense. Additionally, DEC agreed to flow back $100 million of IRA nuclear and other PTCs to South Carolina retail customers over 22 months. The company states the Stipulation has no material immediate accounting impact.
The Stipulation remains subject to PSCSC approval, with an evidentiary hearing scheduled to begin November 13, 2025. DEC has requested new rates take effect no later than March 1, 2026. For investors, the outcome is a meaningful reduction from the original request, primarily driven by the lower ROE, but it still provides a constructive regulatory outcome with a modest customer impact and continued recovery of prudently incurred costs.
02—Key points
Key Highlights
- Partial settlement reached November 11, 2025 with South Carolina ORS and intervenors, resolving all revenue requirement issues in DEC's July 2025 base rate case
- Base annual revenue increase cut from $151 million requested to $74 million under the Stipulation; net increase after PTC flow-back is about $19 million (approx. 1.0% average retail increase)
- Return on equity reduced from 10.85% requested to 9.99%, on a 53% equity capital structure, with an overall rate of return of 7.41%
- South Carolina retail rate base set at $7.9 billion versus $8.1 billion in the original filing
- Storm reserve annual funding increase to $10 million (from $5 million) and support for a pension cost rider to reduce future earnings volatility
- DEC to flow back $100 million of nuclear and other production tax credits to South Carolina retail customers over 22 months, shifting to four-year amortization in 2028
- Stipulation subject to PSCSC approval; evidentiary hearing scheduled November 13, 2025; DEC requests new rates effective no later than March 1, 2026, with no material immediate accounting impact
03—Questions
Frequently Asked Questions
How much of DEC's original rate request was approved under the settlement?
The original request was about $151 million in annual revenue increases. The Stipulation reduces the base increase to about $74 million, and after a $55 million PTC rider credit, the net increase is about $19 million, or roughly 1.0% of average retail revenues.
What drove the reduction in the requested revenue increase?
The largest driver was the reduced return on equity, from 10.85% to 9.99%, which accounts for about $50 million of the reduction. Other revenue reductions account for about $27 million.
When will the settlement take effect and what is still pending?
The Stipulation requires PSCSC review and approval. An evidentiary hearing is scheduled to begin November 13, 2025, and DEC has requested new rates effective no later than March 1, 2026.
Does the settlement have an immediate financial statement impact?
According to the company, the Stipulation does not result in any material immediate accounting impacts.
What does the settlement mean for customers?
The net average retail increase is about 1.0%, offset in part by the $100 million flow-back of nuclear and other production tax credits over 22 months, with the storm reserve and pension cost rider adjustments also included.
04—Continue