14. Long-Term Debt

In March 2019, the Company entered into a loan and security agreement, as amended, with Generate Lending, LLC, providing for a secured term loan facility in the amount of $100 million (the “Term Loan Facility”). In December 2022, the Company fully repaid the outstanding balance of the Term Loan Facility, which resulted in a recording of a loss on the extinguishment of debt of $1.0 million on the consolidated statement of operations.

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In June 2020, the Company acquired debt as part of the acquisition of United Hydrogen Group Inc. The outstanding carrying value of the debt was $3.9 million as of December 31, 2023. The outstanding principal on the debt is $5.5 million and the unamortized debt discount is $1.6 million, bearing varying interest rates ranging from 5.6% to 8.3%, and is scheduled to mature in 2026. As of December 31, 2023, the principal balance is due at each of the following dates is the following (in thousands):

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