01—Abstract
Summary
Summary of the 8-K filed April 1, 2026. Cited figures are marked; the original filing is the authoritative source.
Duke Energy (NYSE: DUK) and its subsidiary Piedmont Natural Gas completed the sale of Piedmont's Tennessee natural gas distribution business to Spire Inc. on March 31, 2026, for $2.48 billiona in cash, subject to customary purchase price adjustments.
The sale was first announced in July 2025. The business includes roughly 3,800 miles of distribution and transmission pipeline and more than 200,000 customers, primarily in the Greater Nashville area. Operating employees have transitioned to Spire.
Per the company, about $800 millionb of proceeds will repay debt at Piedmont to maintain its capital structure, and the remaining $1.5 billion, net of tax, is intended to help fund Duke's five-year regulated capital plan of $103 billion. The unaudited pro forma financials in Exhibit 99.1 show that the sale generated an estimated pre-tax gain of about $693 million, which lifts pro forma 2025 Piedmont net income to $887 million from $440 million historically. This gain is non-recurring, and the exhibit notes that the actual gain will be based on net book value at closing and may differ from the estimate.
Investors should also note that the sale removes about $326 millionc of 2025 revenue and about $149 million of pre-gain operating loss-equivalent contribution from the Tennessee business, so the ongoing earnings base of Piedmont is smaller going forward. From a credit and capital allocation standpoint, the transaction is modestly positive: it reduces Piedmont's debt by roughly $800 million and provides a sizable cash inflow to support Duke's large regulated investment program. The filing is largely a completion notice, with the purchase agreement incorporated by reference and no new guidance beyond the pro forma data.
02—Key points
Key Highlights
- Completed sale of Piedmont's Tennessee natural gas LDC to Spire Inc. on March 31, 2026, for $2.48 billion in cash, subject to customary purchase price adjustments
- Approximately $800 million of proceeds will repay Piedmont debt; the remaining ~$1.5 billion net of tax is earmarked to help fund Duke's $103 billion five-year capital plan
- Pro forma 2025 Piedmont net income rises to $887 million from $440 million historically, driven by an estimated pre-tax gain of about $693 million (non-recurring)
- Divested business contributed about $326 million of 2025 operating revenue and roughly 3,800 miles of pipeline serving more than 200,000 customers
- Estimated gain uses $1.74 billion of net assets sold and $50 million of transaction costs; final gain will depend on net book value at closing
- Pro forma balance sheet shows Piedmont cash of about $1.33 billion and estimated tax payments of about $347 million related to the taxable gain
- Transaction did not qualify as discontinued operations, so results remain within continuing operations
03—Questions
Frequently Asked Questions
How much cash did Duke Energy receive from the sale, and how will it be used?
Piedmont received $2.48 billion in cash, subject to customary purchase price adjustments. About $800 million will repay Piedmont debt to maintain its capital structure, and the remaining roughly $1.5 billion, net of tax, is intended to help fund Duke's $103 billion five-year regulated capital plan.
Will the sale have a lasting impact on Piedmont's earnings?
Partly. The pro forma statements show a one-time estimated pre-tax gain of about $693 million that inflates 2025 net income to $887 million. Excluding that gain, the business's removal reduces revenue by about $326 million and operating income by about $149 million (pre-gain), and lower interest expense from the debt paydown of $22 million partly offsets this. The ongoing earnings base is therefore smaller.
What is the size and scope of the business that was sold?
The Tennessee business included about 3,800 miles of distribution and transmission pipelines and more than 200,000 customers, with operations primarily in the Greater Nashville area. Piedmont employees who supported the business transitioned to Spire.
Is the reported gain final?
No. The pro forma gain is an estimate calculated using December 31, 2025 balances, and the actual gain will be based on net book value as of closing, which occurred March 31, 2026. The company notes it could differ from the estimate, and the purchase price remains subject to post-closing adjustments.
Does this change Duke Energy's overall business profile?
Only modestly. The Tennessee gas business was a small part of Duke's portfolio, and the company continues to emphasize its electric utilities and its large regulated capital program. The filing does not provide updated guidance or new strategic commitments.
04—Continue