Non-recourse Long-term Debt
Indirect subsidiaries of the Company have incurred long-term non-recourse debt obligations with respect to the renewable energy facilities that those subsidiaries own directly or indirectly. The indebtedness of these subsidiaries is typically secured by the renewable energy facility's assets (mainly the renewable energy facility) or equity interests in subsidiaries that directly or indirectly hold renewable energy facilities with no recourse to TerraForm Power, Terra LLC or Terra Operating LLC other than limited or capped contingent support obligations, which in aggregate are not considered to be material to the Company's business and financial condition. In connection with these financings and in the ordinary course of its business, the Company and its subsidiaries observe formalities and operating procedures to maintain each of their separate existence and can readily identify each of their separate assets and liabilities as separate and distinct from each other. As a result, these subsidiaries are legal entities that are separate and distinct from TerraForm Power, Terra LLC, Terra Operating LLC and the guarantors under the Senior Notes due 2023, the Senior Notes due 2025, the Senior Notes due 2028, the Revolver, the Sponsor Line and the Term Loan.
Non-recourse Portfolio Term Loan
A wholly owned subsidiary of the Company entered into a $500.0 million non-recourse portfolio term loan commitment that was funded on December 15, 2015 (the “Midco Portfolio Term Loan”) and a majority of the proceeds were used to acquire wind power plants from Invenergy Wind. Interest under the term loan accrued at a rate equal to an adjusted Eurodollar rate plus 5.5%, subject to a 1.0% LIBOR floor (or base rate plus 4.5%). The term loan was secured by indirect equity interests in approximately 1,104.3 MW of the Company's renewable energy facilities, consisting of assets acquired from Invenergy Wind and certain other renewable energy facilities acquired from SunEdison, and was to mature on January 15, 2019, to the extent the Company exercised its extension options. The Company exercised the first two extension options in January and July of 2017, respectively.
In June of 2017, the Company agreed to make a $100.0 million prepayment for this loan in connection with obtaining (i) a waiver to extend the 2016 audited project financial statement deadline under the loan agreement and (ii) a waiver of the change of control default that would arise under this loan agreement as a result of the Merger until, in the case of the change of control waiver, the date that is the earlier of three months following the closing of the Merger and March 31, 2018. This prepayment was made using a portion of the proceeds the Company received from the sale of the U.K. Portfolio as discussed in Note 4. Acquisitions and Dispositions. The Company made approximately $68 million of additional prepayments in the second half of 2017 and repaid the remaining principal balance of $300.0 million on November 8, 2017 using borrowings from the Term Loan that was entered into on that date as discussed above. The Company recognized a $3.2 million loss on extinguishment of debt during the year ended December 31, 2017 as a result of these prepayments and final repayment.
United States Project-level Financing
On June 6, 2018, one of the Company’s subsidiaries entered into a new non-recourse debt financing agreement, whereby it issued $83.0 million of 4.59% senior notes, secured by approximately 73 MW of utility-scale solar power plants located in Utah, Florida, Nevada and California that are owned by the Company's subsidiary. The proceeds of this financing were used to pay down the Revolver, which was drawn to fund a portion of the purchase price for the acquisition of Saeta. The non-recourse senior notes mature on August 31, 2040 and amortize on a 22-year sculpted amortization schedule.
On September 28, 2018, one of the Company’s subsidiaries entered into a new non-recourse debt financing agreement whereby it issued $78.8 million of 4.64% senior notes, secured by approximately 51 MW of utility-scale and distributed-generation solar power plants located in New York, New Jersey, Massachusetts, North Carolina, Colorado and California that are owned by the Company’s subsidiaries. The majority of the proceeds of this financing were used to repay a portion of the Revolver in October of 2018. The non-recourse senior notes mature on December 31, 2032 and amortize on a 14-year sculpted amortization schedule.
Spain Project-level Financing
On September 28, 2018, one of the Company’s subsidiaries entered into a new non-recourse debt refinancing arrangement whereby it issued approximately €50.0 million of notes secured by 48 MW of utility-scale wind power plants located in Spain. The new notes consist of €30.0 million Tranche A (the equivalent of approximately $35.0 million on the closing date) maturing in 9.5 years and €20.0 million Euro Tranche B (the equivalent of approximately $23.0 million on the