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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of committed to supply the following long-term delivered energy and capacity (Details) MWh in Millions	Dec. 31, 2024 MWh
Delivered Energy | 2025
Supply Commitment [Line Items]
Annual plant energy generation (in MWh) (in millions)	6.0
Delivered Energy | 2026
Supply Commitment [Line Items]
Annual plant energy generation (in MWh) (in millions)	6.0
Delivered Energy | 2027
Supply Commitment [Line Items]
Annual plant energy generation (in MWh) (in millions)	6.0
Delivered Energy | 2028
Supply Commitment [Line Items]
Annual plant energy generation (in MWh) (in millions)	6.0
Delivered Energy | 2029
Supply Commitment [Line Items]
Annual plant energy generation (in MWh) (in millions)	6.0
Delivered Energy | Hoosier | 2025
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	1.7
Percentage of annual plant energy generation	28.00%
Delivered Energy | Hoosier | 2026
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	1.6
Percentage of annual plant energy generation	27.00%
Delivered Energy | Hoosier | 2027
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	1.3
Percentage of annual plant energy generation	22.00%
Delivered Energy | Hoosier | 2028
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	0.4
Percentage of annual plant energy generation	7.00%
Delivered Energy | Hoosier | 2029
Supply Commitment [Line Items]
Percentage of annual plant energy generation	0.00%
Delivered Energy | Other Third Party Customers | 2025
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	0.6
Percentage of annual plant energy generation	10.00%
Delivered Energy | Other Third Party Customers | 2026
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	1.8
Percentage of annual plant energy generation	30.00%
Delivered Energy | Other Third Party Customers | 2027
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	0.5
Percentage of annual plant energy generation	8.00%
Delivered Energy | Other Third Party Customers | 2028
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	0.7
Percentage of annual plant energy generation	12.00%
Delivered Energy | Other Third Party Customers | 2029
Supply Commitment [Line Items]
Delivered energy (in MWh) (in millions)	0.3
Percentage of annual plant energy generation	5.00%
Energy Capacity | 2025
Supply Commitment [Line Items]
Capacity (in MW)	775
Energy Capacity | 2026
Supply Commitment [Line Items]
Capacity (in MW)	800
Energy Capacity | 2027
Supply Commitment [Line Items]
Capacity (in MW)	800
Energy Capacity | 2028
Supply Commitment [Line Items]
Capacity (in MW)	800
Energy Capacity | 2029
Supply Commitment [Line Items]
Capacity (in MW)	800
Energy Capacity | Hoosier | 2025
Supply Commitment [Line Items]
Capacity (in MW)	97
Percentage of annual plant capacity	13.00%
Energy Capacity | Hoosier | 2026
Supply Commitment [Line Items]
Capacity (in MW)	105
Percentage of annual plant capacity	13.00%
Energy Capacity | Hoosier | 2027
Supply Commitment [Line Items]
Capacity (in MW)	110
Percentage of annual plant capacity	14.00%
Energy Capacity | Hoosier | 2028
Supply Commitment [Line Items]
Capacity (in MW)	46
Percentage of annual plant capacity	6.00%
Energy Capacity | Hoosier | 2029
Supply Commitment [Line Items]
Percentage of annual plant capacity	0.00%
Energy Capacity | Other Third Party Customers | 2025
Supply Commitment [Line Items]
Capacity (in MW)	68
Percentage of annual plant capacity	9.00%
Energy Capacity | Other Third Party Customers | 2026
Supply Commitment [Line Items]
Capacity (in MW)	89
Percentage of annual plant capacity	11.00%
Energy Capacity | Other Third Party Customers | 2027
Supply Commitment [Line Items]
Capacity (in MW)	118
Percentage of annual plant capacity	15.00%
Energy Capacity | Other Third Party Customers | 2028
Supply Commitment [Line Items]
Capacity (in MW)	120
Percentage of annual plant capacity	15.00%
Energy Capacity | Other Third Party Customers | 2029
Supply Commitment [Line Items]
Capacity (in MW)	15
Percentage of annual plant capacity	2.00%

X

- Definition

The percentage of annual plant capacity as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

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+ References

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- Definition

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+ References

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- Definition

The total annual plant energy delivered by the entity for long-term supply commitments as of the reporting date.

+ References

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- Definition

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+ References

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