v3.25.2
Regulatory Matters (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
MW
Mar. 31, 2025
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Jun. 30, 2025
USD ($)
MW
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Regulatory Matters [Line Items]              
Approved increase to basic rates and charges         $ 71,000    
Total current regulatory assets $ 146,665       146,665   $ 134,328
Total long-term regulatory assets 614,043       614,043   619,029
Total current regulatory liabilities 10,616       10,616   11,915
Total long-term regulatory liabilities 389,539       $ 389,539   $ 404,021
Public Utilities, Approved Return on Equity, Percentage         9.90%    
Public Utilities, Approved Debt Capital Structure, Percentage         4.90%    
Hoosier Wind Project MW         106    
Public Utilities, Rate Bases $ 3,500,000       $ 3,500,000    
Pike Co BESS Project MW         200    
Pike Co BESS Project MwH         800    
Crossvine Project | MW 85       85    
Crossvine Project Storage Capacity | MW 85       85    
Crossvine Project MwH | MW         340    
Net Income (Loss) Attributable to Noncontrolling Interest $ (12,986) $ (82,595) $ (20,747) $ (2,552) $ (95,581) $ (23,299)  
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 63,500       63,500    
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill $ 77,600       77,600    
2026 Rate Increase              
Regulatory Matters [Line Items]              
Public Utilities, Requested Rate Increase (Decrease), Amount         $ 85,400    
Public Utilities, Requested Rate Increase (Decrease), Percentage         4.50%    
Public Utilities, Requested Rate Increase (Decrease), Amount         $ 85,400    
Public Utilities, Requested Rate Increase (Decrease), Percentage         4.50%    
2027 Rate Increase              
Regulatory Matters [Line Items]              
Public Utilities, Requested Rate Increase (Decrease), Amount         $ 107,500    
Public Utilities, Requested Rate Increase (Decrease), Percentage         5.60%    
Public Utilities, Requested Rate Increase (Decrease), Amount         $ 107,500    
Public Utilities, Requested Rate Increase (Decrease), Percentage         5.60%    
HLBV Method              
Regulatory Matters [Line Items]              
Net Income (Loss) Attributable to Noncontrolling Interest         $ 80,700