ONE Gas, Inc. 2025 Annual Report (10-K) Summary
Business Context and Reporting Period
Company: ONE Gas, Inc. (NYSE: OGS)
Reporting Period: Fiscal year ended December 31, 2025
Business Overview: ONE Gas is a 100-percent regulated natural gas distribution utility headquartered in Tulsa, Oklahoma. It serves approximately 2.3 million residential, commercial, and transportation customers across Oklahoma, Kansas, and Texas. The company operates three divisions: Oklahoma Natural Gas, Kansas Gas Service, and Texas Gas Service. It is a large accelerated filer and maintains investment-grade credit ratings (A3/Prime-2 from Moody's; A-/A-2 from S&P).
Key Financial Metrics
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Revenues | $2,427.4 million | $2,083.6 million | $2,372.0 million |
| Operating Income | $457.4 million | $399.0 million | $377.6 million |
| Net Income (GAAP) | $264.2 million | $222.9 million | $231.2 million |
| Diluted EPS (GAAP) | $4.37 | $3.91 | $4.14 |
| Adjusted Net Income (Non-GAAP) | $271.0 million | $224.8 million | $233.0 million |
| Adjusted Diluted EPS | $4.48 | $3.94 | $4.17 |
| Operating Cash Flow | $578.8 million | $368.4 million | $939.5 million |
| Capital Expenditures | $759.5 million | $762.1 million | $728.7 million |
| Long-Term Debt (Excl. KGSS-I) | $2.15 billion (Senior Notes) | $2.15 billion | N/A |
| Debt-to-Capital Ratio | 47.6% | N/A | N/A |
| Dividends Declared (Annualized) | $2.72 per share | $2.64 per share | $2.60 per share |
Material Changes vs. Prior Period
- Revenue Growth: Total revenues increased 17% ($343.8 million) compared to 2024, driven primarily by a $332.2 million increase in natural gas sales due to higher commodity costs passed through to customers and new rate implementations.
- Profitability: Operating income rose 15% ($58.4 million) and Net Income increased 19% ($41.3 million). Key drivers included a $116.0 million increase from new rates and $6.6 million from residential customer growth.
- Cost Increases: Operating costs increased by $44.2 million, primarily due to higher depreciation ($20.6 million), employee-related costs ($17.0 million), and ad-valorem taxes ($14.7 million).
- Customer Base: Average customer count grew to 2.295 million in 2025, an increase of 14,000 customers from 2024, driven by system extensions and new connections.
- Weather Impact: Actual Heating Degree Days (HDDs) were below normal in all three states (Oklahoma: 92%, Kansas: 94%, Texas: 88% of normal), though Weather Normalization Adjustments (WNA) mitigated the revenue impact.
Guidance, Outlook, and Risks
- Capital Expenditure Outlook: The company expects capital expenditures and asset removal costs to be approximately $800 million for 2026.
- Regulatory Developments:
- Oklahoma: PBRC settlement approved a $41.1 million base rate revenue increase effective June 2025.
- Kansas: KCC approved a $7.2 million GSRS increase effective August 2025.
- Texas: RRC approved a $14.5 million revenue increase and consolidation of service areas effective January 2026. Texas House Bill 4384 allows deferral and recovery of specific infrastructure costs.
- Infrastructure Initiative: Announced a $120 million project to build a 43-mile pipeline in southeast Oklahoma, expected to be completed in Q3 2028.
- Liquidity: Amended credit facility increased to $1.5 billion; commercial paper capacity increased to $1.5 billion. Settled forward sale agreements for 2.63 million shares, generating $205.0 million in net proceeds.
- Risks: Key risks include regulatory lag in cost recovery, extreme weather events impacting demand and infrastructure, cybersecurity threats, and the potential for increased compliance costs related to pipeline safety and environmental regulations (e.g., MGP site remediation).
Investor Verification Checklist
- Regulatory Recovery: Verify the timeline and certainty of recovering the $120 million infrastructure investment and other capital expenditures through future rate cases in Oklahoma, Kansas, and Texas.
- Weather Sensitivity: Assess the effectiveness of Weather Normalization Adjustments (WNA) in mitigating revenue volatility given the 2025 variance from normal HDDs.
- Debt Structure: Review the terms of the $250 million unsecured term loan (maturing Sept 2026) and the $2.2 billion Senior Notes portfolio to understand refinancing needs and interest rate exposure.
- Environmental Liabilities: Monitor the status of the 12 former Manufactured Gas Plant (MGP) sites in Kansas and the Texas site, specifically the $32.0 million cap on recoverable remediation costs and potential for future write-offs.
- Non-GAAP Reconciliation: Scrutinize the $6.7 million adjustment for deferred carrying costs to understand the gap between GAAP and Adjusted Net Income.