Holtec International

AActiveFounded 1986🇺🇸Jupiter, Florida

CEO

Kris Singh

Overview

Holtec International is a vertically integrated nuclear technology and services company whose core businesses include used-fuel storage and transport systems, plant decommissioning, manufacturing, and nuclear project execution. Its flagship growth programs are the restart of the Palisades plant in Michigan, the first U.S. nuclear plant to return from decommissioning to operations status, and the SMR-300 small modular reactor platform, which Holtec is advancing at Palisades and in the UK with EDF.

Main Products

SMR-300

In Development

Holtec's Gen III+ pressurized water small modular reactor platform, intended for first deployment as the dual-unit Pioneer 1 & 2 project at Palisades and for follow-on projects such as Cottam in the UK.

Design is now centered on the SMR-300 architecture; Pioneer 1 & 2 at Palisades has DOE support, the NRC has accepted the first part of the construction permit application for review, and the design completed UK GDA Step 2 in March 2026.

Electrical Output>320 MWe per unit

Reactor TypePressurized light-water reactor (PWR)

Pioneer Configuration2 units / 680 MWe total

Site Footprint~15 acres per unit deployment

International PipelinePalisades (U.S.) and Cottam (UK/EDF)

Licensing StatusU.S. CPA accepted; UK GDA Step 2 complete

Target DeploymentEarly 2030s

HI-STORM

Operational

Industry-leading dry cask storage system for spent nuclear fuel — the most widely deployed system of its kind worldwide.

In commercial operation across Holtec's global dry storage business, which served 155 reactors worldwide by the end of 2025 and continues to expand with new projects in Asia and Europe.

Reactors Served155 worldwide

System TypeMPC-based dry storage and transport platform

U.S. Output Share90%+ of national dry storage and transport system output

Domestic Market Share74%

Global DeploymentU.S. and international nuclear plant sites

What's Next

Palisades nuclear plant restart

Complete final testing, maintenance closeout, fuel loading, and grid reconnection at Palisades following its 2025 return to operations status and 2026 passivation milestone work.

2026

Pioneer 1 & 2 construction permit review

Advance the SMR-300 from pre-application into full U.S. licensing by progressing the Pioneer 1 & 2 construction permit review, with NRC safety and environmental review expected to run into 2027.

2027

UK and international SMR-300 deployment pipeline

Convert UK GDA Step 2 progress and the EDF/Cottam partnership into site-specific licensing and follow-on international deployments that can reuse the UK and U.S. regulatory work.

Early 2030s

Operations & Revenue

StatusOperational (fuel-cycle services), Palisades restart in final preparations, SMR licensing underway

Holtec's dry storage, transport, manufacturing, and decommissioning businesses are fully operational. Palisades remains in late-stage testing, maintenance closeout, and fuel-loading preparation ahead of restart, while the SMR-300 program has moved into active U.S. licensing with NRC review underway.

Revenue Streams

Used Fuel Storage & Transport Systems

Holtec's dry storage and transport platforms remain the company's core revenue engine, with more than 90% of U.S. dry storage and transport system output and a global roster spanning 155 reactors.

Nuclear Decommissioning & Site Services

Holtec provides decommissioning, site services, engineering, and owner's engineer support across retired and transitioning nuclear assets, including workstreams tied to Palisades and legacy shutdown sites.

Palisades Restart & Future Plant Operations

Holtec is executing the Palisades restart with DOE-backed financing, positioning the plant to resume power sales from an 800+ MWe unit once final restart conditions are met.

SMR-300 Development & Project Delivery (future)

Holtec is monetizing the SMR-300 through licensing, EPC-style project development, and strategic partnerships, starting with Pioneer 1 & 2 at Palisades and the Cottam program with EDF in the UK.

Key Metrics

Employees

~3,000

Est. Annual Revenue

Not publicly disclosed

U.S. Dry Storage Output Share

90%+

SMR-300 Output

>320 MWe per unit

Reactors Served by Holtec Dry Storage

155 worldwide

Timeline

2026SMR-300 clears UK GDA Step 2

Holtec announces that SMR-300 completed Step 2 of the UK Generic Design Assessment while the Pioneer 1 & 2 construction permit application remains under NRC review in the U.S.

2025Palisades returns to operations status

After NRC approval in July, Palisades officially transitions from decommissioning back to operations status on August 25, 2025, authorizing fuel receipt and restart preparations.

2025DOE backs Pioneer 1 & 2 SMR-300 project

Holtec's dual-unit Pioneer 1 & 2 project at Palisades wins a $400M DOE First Mover award to support first-of-a-kind SMR-300 deployment in the U.S.

2023DOE loan for Palisades restart

Receives a $1.52B conditional loan guarantee from the DOE to support the restart of the Palisades plant.

2022Palisades nuclear plant acquired

Acquires the Palisades Nuclear Generating Station in Michigan with plans to restart it — the first attempted nuclear restart in U.S. history.

2018SMR-160 development launched

Formally launches development of the SMR-160, Holtec's initial light-water small modular reactor design.

2010Nuclear decommissioning expansion

Expands into nuclear plant decommissioning services, eventually acquiring multiple retired nuclear sites.

2000HI-STORM system deployed

HI-STORM dry cask storage system enters widespread commercial deployment, becoming the industry standard for spent fuel storage.

1986Founded

Kris Singh founds Holtec International to provide nuclear fuel storage and handling solutions.

Funding

Round	Date	Amount	Investors
Self-funded growth	1986–present	Undisclosed	Privately funded through operating cash flow and nuclear services revenue
DOE loan (Palisades restart)	2024–2025	$1.52B loan guarantee ($335.1M disbursed by Aug. 2025)	U.S. Department of Energy — Loan Programs Office
DOE First Mover award	2025	$400M	U.S. Department of Energy