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RATE REDUCTION BONDS AND VARIABLE INTEREST ENTITIES- Rate Reduction Bonds, Principal and Interest Payments (Details) - PSNH $ in Millions | Dec. 31, 2022 USD ($)
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Debt Instrument [Line Items] |
2023 | $ 43.2
2024 | 43.2
2025 | 43.2
2026 | 43.2
2027 | 43.2
Thereafter | 237.7
Total | $ 453.7

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