RATE MATTERS - PSO Rate Matters (Details) - 2026 Oklahoma Base Rate Case - PUBLIC SERVICE COMPANY OF OKLAHOMA - USD ($) $ in Millions |
1 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
May 31, 2026 |
Jan. 31, 2026 |
|
| Public Utilities, General Disclosures [Line Items] | |||
| Requested annual base rate increase (decrease) | $ 73 | $ 299 | |
| Requested debt capital structure | 50.10% | 50.10% | |
| Requested equity capital structure | 49.90% | 49.90% | |
| Requested return on equity | 9.375% | 10.50% | |
| Public utilities, deferred tax liability, credit period | 2 years | ||
| Requested deferred costs, maximum, year one | $ 13 | ||
| Requested deferred costs, maximum, year two | $ 4 | ||
| Minimum | |||
| Public Utilities, General Disclosures [Line Items] | |||
| Requested annual base rate increase (decrease) | $ 10 | ||
| Requested return on equity | 8.30% | ||
| Maximum | |||
| Public Utilities, General Disclosures [Line Items] | |||
| Requested annual base rate increase (decrease) | $ 109 | ||
| Requested return on equity | 9.38% | ||