Pattern Energy closes $11 billion SunZia wind, transmission financing

Pattern Energy closed $11 billion in financing for SunZia Wind and Transmission, the largest clean energy infrastructure project in US history, pairing a 3,515 MW wind project with a 550-mile HVDC line. The structured green-loan financing offers a benchmark for large-scale renewable and transmission project finance relevant to Indian developers.

Pattern Energy closed $11 billion in non-recourse financing for SunZia Transmission, a 550-mile ±525 kV HVDC line carrying 3,000 MW from central New Mexico to south-central Arizona, and SunZia Wind, a 3,515 MW project across three New Mexico counties, the largest wind project in the Western Hemisphere. The financing includes roughly $8.8 billion in construction and term facilities structured as green loans under the Green Loan Principles, a $2.25 billion tax equity term loan, and a holding company facility. The project will provide clean power to over 3 million Americans.

The financing involved over a dozen institutions as Initial Coordinating Lead Arrangers, including BNP Paribas, Crédit Agricole CIB, CoBank, Export Development Canada, ING Capital, KfW IPEX-Bank, MUFG, Natixis, Societe Generale, SMBC and Wells Fargo Securities, with Banco Santander leading the tax equity facility. The project most directly affects the US Western grid, suppliers and the regional workforce, employing more than 2,000 on-site workers, with Quanta as transmission EPC, Hitachi Energy as HVDC supplier, Blattner Energy as wind EPC, and turbines from GE Vernova and Vestas.

Renewable developers and project financiers should study the financing architecture, combining green construction and term loans, tax equity and holding company facilities, to fund integrated generation-plus-transmission at scale. Indian developers planning large wind and inter-state transmission projects can benchmark the Green Loan Principles structuring and multi-bank syndication. Stakeholders should monitor construction execution, given the project's anticipated economic impact exceeding $20 billion and its role as the largest US clean energy infrastructure undertaking, for lessons on coordinating generation and transmission buildout.

Key figure — Total financing: $11 billion non-recourse for SunZia