Power Sustainable Completes Sale of Minority Stake in Big Sky Wind to Institutional Partners

Power Sustainable completed the sale of a 49.9% interest in Big Sky Wind (240 MW) to funds managed by Hamilton Lane and GCM Grosvenor on April 29, 2026.

Rhea-AI Summary

Power Sustainable completed the sale of a 49.9% interest in Big Sky Wind (240 MW) to funds managed by Hamilton Lane and GCM Grosvenor on April 29, 2026. PSEI retains a majority stake and will continue to operate the fully repowered (2022) PJM-market asset while recycling capital for new investments.

This partnership with institutional investors supports PSEI's capital-recycling strategy and aims to scale its renewable infrastructure platform.

Positive

• 49.9% stake sold to Hamilton Lane and GCM Grosvenor
• 240 MW operating wind facility with strong operating track record
• Asset fully repowered in 2022, supporting performance and availability
• PSEI retains majority interest and continues operational control
• Capital recycling to fund new investments across PSEI's portfolio

Negative

• None.

Argus Apr 29 session

-1.65% close to close Open Argus

Details

News Market Reaction – GCMG

On Apr 29, the day this news came out, GCMG closed 1.65% below the previous close.

Data tracked by StockTitan Argus for the Apr 29 session.

Market Context

This announcement highlights GCM Grosvenor’s role as an institutional partner in large-scale renewab...

Analysis

This announcement highlights GCM Grosvenor’s role as an institutional partner in large-scale renewable infrastructure, adding exposure to a 240 MW repowered wind asset in the PJM market. It complements the firm’s broader infrastructure build-out alongside flexible financing tools such as a $350 million shelf and an ATM program. Investors may monitor future disclosures on fee economics, capital deployment, and any additional securities offerings under the shelf.

Key Figures

Stake sold: 49.9% interest Project capacity: 240 MW Repower year: 2022

Stake sold

49.9% interest

Minority interest in Big Sky Wind sold to institutional partners

Project capacity

240 MW

Operating wind facility capacity at Big Sky Wind in Illinois

Repower year

2022

Big Sky Wind was fully repowered in 2022

Historical Context

5 past events · Latest: Apr 23

5 events

1. Apr 23

   Earnings call schedule

   24h Move

   -0.4%

   Set date and webcast details for Q1 2026 financial results call.

2. Apr 13

   Senior hire infrastructure

   24h Move

   +3.3%

   Hired co-head of direct infrastructure, supporting $19B infrastructure platform growth.

3. Apr 09

   Senior hire MENA

   24h Move

   -1.8%

   Added MD to expand business development and client reach across MENA region.

4. Mar 12

   Senior hire Europe

   24h Move

   -8.5%

   Appointed MD in London to deepen European relationships, including $10.4B Nordic AUM.

5. Mar 04

   Backs new PE firm

   24h Move

   +1.5%

   Backed Torch Key Asset Management launch via Elevate Fund anchor capital.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

pjm market

1 terms

pjm market technical

"The asset, which was fully repowered in 2022, is located in the PJM market"

The PJM market is the organized wholesale electricity marketplace run by PJM Interconnection, where power producers sell electricity and utilities buy it to serve customers across a large U.S. region. Think of it as a giant online marketplace for electricity that sets prices and schedules supply to keep the lights on; changes in those prices, capacity rules or reliability signals directly affect utility and generator revenues, operating costs and investment decisions, so investors watch it closely.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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MONTREAL, April 29, 2026 /PRNewswire/ - Power Sustainable Energy Infrastructure ("PSEI"), the renewable energy infrastructure platform of Power Sustainable, today announced it completed the sale of a 49.9% interest in Big Sky Wind, a 240 MW operating wind facility located in Illinois, to funds managed by Hamilton Lane (Nasdaq: HLNE) and GCM Grosvenor, two leading global private markets investment firms. PSEI will retain a majority interest in the asset and continue to oversee its operations.

The transaction reflects PSEI's strategy of partnering with long-term institutional investors while actively recycling capital to fund new investments across its portfolio.

"We are pleased to partner with Hamilton Lane and GCM Grosvenor on Big Sky Wind," said Pierre-Olivier Perras, Managing Partner at PSEI. "This transaction highlights the quality of the asset and reflects our disciplined approach to active portfolio management and capital recycling, enabling us to reinvest in new opportunities and continue to scale our platform."

Taylor McManus, Principal, Infrastructure Investment Team at Hamilton Lane, said: "We are happy to be partnering with Power Sustainable, a proven investor and operator of renewable power generation across North America. This was a unique opportunity to invest in an operating wind asset with a strong contractual framework, an attractive risk return profile and favorable transaction dynamics."

"Big Sky Wind is a high-quality, repowered asset with a strong operating profile and exposure to a constructive U.S. power market," said Kevin Pellecchia, Executive Director, Infrastructure Investments at GCM Grosvenor. "Our investment reflects a focus on accessing established infrastructure assets alongside experienced sponsors, where we see the potential for durable cash flows and long-term value creation."

Big Sky Wind is an operating wind project with a strong performance track record, supported by high availability and stable cash flows. The asset, which was fully repowered in 2022, is located in the PJM market and is positioned to benefit from supportive market fundamentals.

This transaction underscores PSEI's ability to originate, scale, and optimize high-quality infrastructure assets, while maintaining a strong pipeline of investment opportunities across its core markets.

About Power Sustainable

Power Sustainable is a multi-platform alternative asset manager investing across the core sectors of the real economy as they undergo structural change. The firm allocates capital across energy, food, mobility, connectivity, and the built environment, investing selectively along their value chains through equity and credit strategies. Power Sustainable focuses on opportunities where transition, resilience, and resource efficiency are drivers of performance and risk. Power Sustainable is a subsidiary of Power Corporation of Canada (TSX: POW), an international management and holding company focused on financial services in North America, Europe, and Asia. Learn more on Power Sustainable's LinkedIn and Website.

About Hamilton Lane

Hamilton Lane (Nasdaq: HLNE) is one of the largest private markets investment firms globally, providing innovative solutions to institutional and private wealth investors around the world. Dedicated exclusively to private markets investing for more than 30 years, the firm currently employs approximately 780 professionals operating in offices throughout North America, Europe, Asia Pacific and the Middle East. Hamilton Lane has $1.0 trillion in assets under management and supervision, composed of $146.1 billion in discretionary assets and $871.5 billion in non-discretionary assets, as of December 31, 2025. Hamilton Lane specializes in building flexible investment programs that provide clients access to the full spectrum of private markets strategies, sectors and geographies. For more information, please visit our website or follow us on LinkedIn.

About GCM Grosvenor

GCM Grosvenor (Nasdaq: GCMG) is a global alternative asset management solutions provider with approximately $91 billion in assets under management across private equity, infrastructure, real estate, credit, and absolute return investment strategies. The firm has specialized in alternatives for more than 50 years and is dedicated to delivering value for clients by leveraging its cross-asset class and flexible investment platform.

GCM Grosvenor's experienced team of approximately 550 professionals serves a global client base of institutional and individual investors. The firm is headquartered in Chicago, with offices in New York, Toronto, London, Frankfurt, Tokyo, Hong Kong, Seoul and Sydney. For more information, visit: gcmgrosvenor.com.

View original content:https://www.prnewswire.com/news-releases/power-sustainable-completes-sale-of-minority-stake-in-big-sky-wind-to-institutional-partners-302757198.html

SOURCE Power Sustainable

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake did Power Sustainable sell in Big Sky Wind (GCMG) on April 29, 2026?

Power Sustainable sold a 49.9% interest in Big Sky Wind. According to the company, funds managed by Hamilton Lane and GCM Grosvenor acquired the minority stake while PSEI retains majority ownership and operational control.

How large is the Big Sky Wind project that Power Sustainable partially sold (GCMG)?

Big Sky Wind is a 240 MW operating wind facility. According to the company, the project was fully repowered in 2022 and operates in the PJM market with high availability and stable cash flows.

Who are the institutional partners that bought into Big Sky Wind alongside Power Sustainable (GCMG)?

Funds managed by Hamilton Lane and GCM Grosvenor acquired the 49.9% interest. According to the company, both are global private markets investment firms partnering as long-term institutional investors.

Will Power Sustainable continue to manage Big Sky Wind after the sale (GCMG)?

Yes. Power Sustainable will retain a majority interest and continue to oversee operations. According to the company, PSEI remains the operating sponsor and will manage the asset while redeploying capital across its platform.

What strategic purpose did Power Sustainable cite for the Big Sky Wind minority sale (GCMG)?

The company said the sale supports capital recycling and partnership with long-term institutional investors. According to the company, proceeds will be used to fund new investments and scale the renewable infrastructure platform.