Services Built for the Energy Demands of the Future.

Kyuden Energy Partners is a leading energy asset operator, backed by 40+ years of proven performance and the institutional strength of the Kyuden Group.

Years of Industry Experience
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Message from the CEO

“The name we take into this next era was chosen with great care — and one word in particular was intentional: Partners, because it captures who we have always been. We approach every engagement as a deeply committed partner to the owners who entrust their assets to us, operating each day with our “like we own it” mindset. To us, partnership means treating your goals as our own, your challenges as ours to solve, and your success as ours to ensure. It is more than a word — it is our promise to you, today and every day forward.”

Where Performance Meets Partnership

A Foundation Built Over Four Decades.

For more than four decades, the team behind Kyuden Energy Partners has operated some of America’s most complex energy assets. Now, backed by the global resources of the Kyuden Group, that foundation has never been stronger.

The relationship looks different at every site, but the mindset never changes, because Kyuden Energy Partners knows firsthand what’s at stake. As an operator, we bring an owner’s mentality to every decision and do what’s in the facility’s best interest.

U.C. Operating Services (UCOS)
1985- 2002

U.C. Operating Services (UCOS)

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Constellation
2002-2012

Constellation Operating Services, Inc. (COSI)

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IHI
2012

COSI Acquired by IHI Corp.

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08/18/2012

IHI Power Services (IPSC) Founded

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2013-2023

United States Expansion

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2024-2026

IPSC 2.0 Strategy

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Kyuden
07/13/2026

Kyuden Energy Partners Founded

70 MW
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“We manage your plant like we own it.”
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23,000 MW
What sets us apart

The Depth to Deliver. The Scale to Grow.

The U.S. energy landscape is undergoing its most significant transformation in a generation, with grid modernization, portfolio diversification, surging demand and an aging asset base converging. Kyuden Energy Partners sits at that intersection, ready to tackle what comes next.

Partners You Can Count On

Safety Always

Operational Excellence

Technological Breadth

Trusted Expertise

industry Recognition

A Reputation Earned Through Results.

Kyuden Energy Partners’ commitment to excellence has earned recognition from Combined Cycle Journal, NAEM Leadership in Action, OC Business Journal and more.

Subject matter experts are also regularly tapped by top industry publications for insights, trend analysis and thought leadership:

OC Business Journal
S&P Global
Energy Central
Energy Storage
Turbo Machinery

2025 · CCJ Award Recognition

Eight facilities managed by the company received CCJ Award recognitions.

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2025 · NAEM Leadership in Action

Anthony Miles, Director of Health & Safety, named a 2025 recipient.

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2025 · OC Business Journal — CFO of the Year

CEO Tony Dabbene received the CFO of the Year / Lifetime Achievement Award.

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2023 · ACG Orange County

Named Green / Sustainability Company of the Year.

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Latest News

What's New.

IHI Power Services Corp. Rebrands as Kyuden Energy Partners Following Acquisition by Japan’s Kyuden Group

ALISO VIEJO, Calif.–(BUSINESS WIRE)–IHI Power Services Corp. (IPSC), a leading operator of power plants across the U.S., has a new name as it enters a new chapter. Effective today, IPSC officially becomes Kyuden Energy Partners Corporation, following the completion of its acquisition by Kyuden International Corporation (Kyuden International), a wholly owned subsidiary of Kyushu Electric Power Company—one of Japan’s […]

IHI Power Services Corp. Selected by Strategic Biofuels for Louisiana Green Fuels Project

ALISO VIEJO, Calif.–(BUSINESS WIRE)–IHI Power Services Corp. (IPSC)—a leading provider of operations and maintenance (O&M), asset management, technical and compliance services for the power generation industry—has been selected by Strategic Biofuels to provide pre‑mobilization, mobilization and plant operations and maintenance services for its Louisiana Green Fuels (LGF) project. The project is a 100 MW, renewable, wood‑fired power […]

IHI Power Services Corp. Joins Kyuden Group, Strengthening U.S. Power Generation Services

ALISO VIEJO, Calif.–(BUSINESS WIRE)–IHI Power Services Corp. (IPSC), a leading provider of operations and maintenance (O&M), asset management, technical and compliance services for the power generation industry, today announced that it has entered into an agreement to be acquired by Kyuden International Corporation, a part of the Kyuden Group, a Japan-based global energy leader with extensive experience […]

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