Pattern Energy

Overview

Pattern Energy is a renewable energy and transmission developer reporting roughly 12 gigawatts of operating capacity across about 46 wind, solar, storage, and transmission facilities in the United States and Canada. It is best known for SunZia, described as the largest wind energy and transmission project in U.S. history, which reached full commercial operation in New Mexico and Arizona in June 2026. Hunter Armistead has been chief executive since January 2023, succeeding co-founder Mike Garland, and the company keeps its corporate headquarters in San Francisco with a growing operations base in Houston.

Pattern was founded in 2009 and went public on NASDAQ in 2013. In March 2020, the Canada Pension Plan Investment Board completed a take-private acquisition for approximately $6.1 billion including debt. In June 2025, a consortium led by APG, investing for the Dutch pension fund ABP, and Australian Retirement Trust acquired the stake formerly held by Riverstone, so Pattern is now owned by CPP Investments alongside those pension investors and management. Since going private it has expanded its development pipeline and taken on SunZia at a scale that would have been difficult to execute as a public company.

SunZia: the flagship project

SunZia is the defining project of Pattern's current strategy and one of the largest clean energy infrastructure investments in U.S. history. It has two components developed in tandem: SunZia Wind, an onshore farm of roughly 3,650 megawatts in central New Mexico, and SunZia Transmission, a 550-mile, 3 GW high-voltage direct current line running from New Mexico to a hub near Phoenix, using converter technology from Hitachi Energy.

The transmission line is one of the longest HVDC lines ever built in the Western Hemisphere, carrying clean energy from the wind-rich Southwest into the load centers of Arizona and California. Wind output sells under long-term contracts to about a dozen purchasers, most of them California community choice aggregators led by Clean Power Alliance, alongside Silicon Valley Clean Energy, Peninsula Clean Energy, Central Coast Community Energy, Ava Community Energy, and CleanPowerSF, plus the University of California and Shell Energy North America. Salt River Project added a 600 MW contract in July 2026. Roughly two-thirds of the output serves California.

SunZia faced nearly two decades of permitting and environmental review before construction began in 2023, backed by an approximately $11 billion financing that closed that December, the largest clean-energy project financing in U.S. history. The wind farm began generating during testing and the full project reached commercial operation in June 2026, demonstrating the feasibility of large-scale merchant transmission development.

Operating portfolio

Beyond SunZia, Pattern operates a diversified portfolio of wind, solar, and storage across the U.S. and Canada. Its U.S. wind fleet spans Texas, California, Pennsylvania, New Mexico, and the Pacific Northwest. Pattern sold its Japanese business, Green Power Investment, in 2023 to concentrate on North America, and in April 2026 acquired Cordelio Power, adding roughly 1,550 megawatts of operating and in-construction assets across 16 wind, solar, and battery storage projects, its first meaningful step into standalone storage.

The Canadian portfolio includes wind projects in Ontario, Quebec, and Alberta, often developed under provincial renewable procurement programs. The long-term contracted revenue model, with most generation sold under multi-decade PPAs, provides the cash flow predictability that suits a pension infrastructure mandate.

Transmission strategy

Pattern is one of the few renewable developers to pursue merchant transmission at scale. The SunZia line is privately and independently financed, distinct from utility-built rate-base transmission, and demonstrates a willingness to take on the complexity of new grid infrastructure where regulated utilities have been slow to act.

The company treats transmission as a strategic complement to generation: new lines free stranded renewable resources, expand the addressable market for its own wind and solar, and create a class of long-duration infrastructure assets with contracted revenue. Pattern reports more than 1,100 miles of transmission in operation and development, and continues evaluating corridors across the Western U.S.

Strategy & outlook

Under CPP Investments ownership, with the APG and Australian Retirement Trust consortium alongside, Pattern has the long-term capital and patient horizon to pursue projects of SunZia's scale and complexity. A pension infrastructure mandate aligns well with large, long-duration renewable and transmission assets, which gives Pattern a structural advantage competing for capital-intensive projects that need decade-long development timelines.

The roughly 40 GW development pipeline positions it as a potential beneficiary of the expected surge in U.S. electricity demand from data centers, manufacturing, and electrification. Having delivered SunZia, Pattern has shown it can execute gigawatt-scale complex infrastructure, which strengthens its credibility with project financiers and PPA counterparties.

Key considerations

Private ownership means limited financial transparency and no public market liquidity. Financial performance, debt, and project-level economics are not disclosed, and capacity and pipeline figures are self-reported. The pension owners' long-term mandate reduces pressure for near-term monetization, and it also means value creation is opaque to outside observers.

With SunZia complete, the flagship execution risk that dominated Pattern's outlook is largely retired. The forward questions are whether it can repeat gigawatt-scale delivery and how a tighter federal environment affects the rest of the pipeline. The 2025 tax law shortened the runway for wind and solar credits, and 2026 litigation over construction safe-harbor rules added uncertainty for projects that have not locked in eligibility. SunZia, largely permitted and financed before those changes, was insulated, and future projects face a less favorable backdrop.

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