Origis Energy has reached financial close on approximately USD 545 million in senior secured financing for the Rockhound solar portfolio, a group of three utility-scale photovoltaic projects totaling about 413 MW in West Texas. The projects are currently under construction in Ector County, and form part of a broader solar complex being developed by Origis that will exceed 700 MW of installed capacity once additional projects in the cluster are included. Commercial operations for the Rockhound facilities are expected to begin in summer 2026. This is also expected to be a significant expansion of solar generation capacity in Texas alongside other developments taking shape in the region like Ferrovial’s $355 million solar facility in Milam County.

The financing package supports the construction and early operational phases of the portfolio, which includes Greyhound A with 240 MW capacity, Rockhound C with 61 MW, and Rockhound D with 28 MW. These projects are also important in Origis Energy’s multi-phase West Texas solar program, complementing earlier Swift Air solar developments that reached financial close in 2025.

Project Factsheet for Origis Energy’s Rockhound Solar Projects Portfolio

Location: Ector County, Texas

Developer, Owner and Operator: Origis Energy

Total Capacity: 413 MW

Individual Projects:

• Greyhound A Solar – 240 MW
• Rockhound C Solar – 61 MW
• Rockhound D Solar – 28 MW

Current Status: Under construction

Expected Commercial Operation: Summer 2026

Importance: Part of a 700+ MW West Texas solar complex under development by Origis Energy

Who is Building Origis Energy’s Rockhound Solar Projects in Texas?

• Origis Energy as developer, owner, and operator of the Rockhound solar portfolio.
• Natixis Corporate & Investment Banking as lead arranger and joint underwriter of the project financing.
• Santander Corporate & Investment Banking – also joint underwriter and coordinating lead arranger for the financing package.
• Crux as tax equity capital provider supporting the broader solar development program.
• Latham & Watkins LLP as legal adviser to Origis Energy on project financing.
• Milbank LLP as legal counsel representing lenders in the transaction.

Financing Structure for Origis Energy’s Rockhound Solar Projects

The USD 545 million financing consists of a structured project-finance package arranged by Natixis CIB and Santander CIB. The funding includes:

• Construction loans
• Term loans
• Tax credit bridge financing
• Letter-of-credit facilities supporting construction and operations

These facilities provide the capital required to complete construction of the three solar plants and also transition them into operational assets once they reach commercial operation in 2026.

The recent financing also builds on a separate USD 340 million tax-equity investment structured through the clean-energy capital platform Crux. This financing also supports the same West Texas solar development program and helps unlock federal clean-energy tax incentives under the U.S. renewable energy framework.

Outlook on the Texas Solar Project

With construction underway and financing secured, the Rockhound solar portfolio is moving toward commissioning in mid-2026. Thereafter, it will contribute more than 400 MW of additional solar capacity to Texas’ electricity system. Additionally, once the broader West Texas complex is fully completed, the combined capacity is expected to exceed 700 MW – a capacity that continues to reinforce the region’s growing role as a hub for large-scale renewable power generation.