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| | | | | December 31, | |
| | | | | 2021 | | | 2021 | |
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6.33% Senior Notes, Due May 1, 2022 | | | | | | $ | 9.0 | | | $ | 0 | |
3.70% Senior Notes, Due August 1, 2026 | | | | | | | 30.0 | | | | 30.0 | |
3.43% Senior Notes, Due December 18, 2029 | | | | | | | 30.0 | | | | 30.0 | |
Unitil Energy First Mortgage Bonds: | | | | | | | | | | | | |
8.49% Senior Secured Notes, Due October 14, 2024 | | | | | | | 3.0 | | | | 1.5 | |
6.96% Senior Secured Notes, Due September 1, 2028 | | | | | | | 16.0 | | | | 14.0 | |
8.00% Senior Secured Notes, Due May 1, 2031 | | | | | | | 15.0 | | | | 15.0 | |
6.32% Senior Secured Notes, Due September 15, 2036 | | | | | | | 15.0 | | | | 15.0 | |
3.58% Senior Secured Notes, Due September 15, 2040 | | | | | | | 27.5 | | | | 27.5 | |
4.18% Senior Secured Notes, Due November 30, 2048 | | | | | | | 30.0 | | | | 30.0 | |
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6.75% Senior Notes, Due November 30, 2023 | | | | | | | 1.9 | | | | 0 | |
6.79% Senior Notes, Due October 15, 2025 | | | | | | | 10.0 | | | | 6.0 | |
3.52% Senior Notes, Due November 1, 2027 | | | | | | | 10.0 | | | | 10.0 | |
7.37% Senior Notes, Due January 15, 2029 | | | | | | | 9.6 | | | | 9.6 | |
5.90% Senior Notes, Due December 15, 2030 | | | | | | | 15.0 | | | | 15.0 | |
7.98% Senior Notes, Due June 1, 2031 | | | | | | | 14.0 | | | | 14.0 | |
3.78% Senior Notes, Due September 15, 2040 | | | | | | | 27.5 | | | | 27.5 | |
4.32% Senior Notes, Due November 1, 2047 | | | | | | | 15.0 | | | | 15.0 | |
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3.52% Senior Notes, Due November 1, 2027 | | | | | | | 20.0 | | | | 20.0 | |
7.72% Senior Notes, Due December 3, 2038 | | | | | | | 50.0 | | | | 50.0 | |
3.78% Senior Notes, Due September 15, 2040 | | | | | | | 40.0 | | | | 40.0 | |
4.42% Senior Notes, Due October 15, 2044 | | | | | | | 50.0 | | | | 50.0 | |
4.32% Senior Notes, Due November 1, 2047 | | | | | | | 30.0 | | | | 30.0 | |
4.04% Senior Notes, Due September 12, 2049 | | | | | | | 40.0 | | | | 40.0 | |
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3.72% Senior Notes, Due November 1, 2027 | | | | | | | 15.0 | | | | 15.0 | |
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2.64% Senior Secured Notes, Due December 18, 2030 | | | | | | | 4.7 | | | | 4.5 | |
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| | | | | | | 528.2 | | | | 509.6 | |
Less: Unamortized Debt Issuance Costs | | | | | | | 3.9 | | | | 3.6 | |
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Total Long-Term Debt, net of Unamortized Debt Issuance Costs | | | | | | | 524.3 | | | | 506.0 | |
| | | | | | | 8.5 | | | | 8.2 | |
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Total Long-term Debt, Less Current Portion | | | | | | $ | 515.8 | | | $ | 497.8 | |
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