GOODWILL AND OTHER INTANGIBLE ASSETS
The carrying value of goodwill as of December 31, 2025 and 2024 was as follows:
(in millions)Regulated EnergyUnregulated EnergyTotal Goodwill
Balance at December 31, 2024$468.3 $39.4 $507.7 
Reductions (1)
— (0.2)(0.2)
Balance at December 31, 2025$468.3 $39.2 $507.5 
(1) Adjustments in the Unregulated Energy segment relate to the sale of certain assets in our propane distribution business during 2025.

There were no goodwill impairments recognized during the three-year period ended December 31, 2025.
The carrying value and accumulated amortization of intangible assets subject to amortization as of December 31, 2025 and 2024 were as follows:
As of December 31,
 20252024
(in millions)Gross
Carrying
Amount
Accumulated
Amortization
Gross
Carrying
Amount
Accumulated
Amortization
Customer relationships$17.0 $9.2 $17.0 $8.2 
Non-Compete agreements
3.1 2.7 3.1 2.3 
Patents (1)
6.6 1.6 6.6 1.2 
Other0.3 0.3 0.3 0.3 
Total$27.0 $13.8 $27.0 $12.0 
(1) Includes amounts related to patented technology developed by Marlin Gas Services and the acquisition of Planet Found.
The customer relationships, non-compete agreements, patents and other intangible assets acquired in the purchases of the operating assets of several companies are being amortized over a weighted average of 15 years. Amortization expense of intangible assets for the years ended December 31, 2025, 2024 and 2023 was $1.8 million, $1.9 million and $1.8 million, respectively. Amortization expense of intangible assets is expected to be $1.6 million for 2026, $1.5 million for 2027, $1.3 million for 2028

Historical Timeline

Fiscal YearFiled
2025Feb 25, 2026Showing above
2024Feb 26, 2025
2023Feb 21, 2024
2022Feb 22, 2023
2021Feb 23, 2022
2019Feb 26, 2020
2018Feb 27, 2019
2017Mar 1, 2018
2016Feb 28, 2017
2015Feb 29, 2016

About Goodwill & Intangibles Disclosures

Goodwill and intangible asset disclosures reveal the premium paid in acquisitions and how management assesses whether that premium retains its value. Since goodwill is no longer amortized under US GAAP, the annual impairment test is the only mechanism that adjusts carrying values downward — making the assumptions behind that test critically important for investors.

Key signals: a history of goodwill impairments suggests management consistently overpays for acquisitions. Watch the gap between reporting unit fair value and carrying amount — when fair value exceeds carrying amount by less than 10-20%, a small decline in business performance could trigger a write-down. For finite-lived intangibles, examine useful life assumptions across customer relationships, technology, and trade names; aggressive estimates inflate near-term earnings. Compare total intangibles-to-total-assets ratios against peers to assess acquisition dependency. Rising goodwill as a percentage of equity can signal balance sheet fragility.