Top Nuclear Energy Companies Shaping the Future of Clean Power

Key Takeaways:

• Nuclear energy offers stable, carbon-free power critical for global electrification and AI-driven demand.
• Innovation across mining, reactors, and utilities is reshaping the nuclear energy value chain.
• Government support and new technologies are creating long-term opportunities in the nuclear sector.

As the demand for clean, reliable energy surges, nuclear power is stepping into the spotlight as a critical player in the global shift away from fossil fuels. With the ability to generate massive amounts of electricity without harmful emissions, nuclear energy offers a sustainable solution to the world's energy needs. Unlike solar and wind, which depend on weather conditions, nuclear power provides a steady, around-the-clock energy supply that is ideal for supporting the increasingly power-hungry infrastructure of modern society and new technologies like artificial intelligence.

But nuclear energy isn’t just about the reactors we’ve seen in the past; today’s leading companies are reimagining the potential of nuclear power with new technologies like small modular reactors (SMRs), advances in nuclear fuels, and even portable microreactors. These innovations promise to make nuclear safer, more efficient, and accessible for a wider range of applications, from powering cities to remote industrial sites.

But who are the key players driving innovation in this industry? From industry stalwarts with decades of expertise to ambitious newcomers revolutionizing technology, the top nuclear energy companies are shaping a cleaner, more resilient energy landscape. Let’s dive into the leading companies at the forefront of this exciting transformation.

The Top Nuclear Energy Companies Leading the Industry

When most people think about the nuclear energy industry, uranium and the companies mining the element often come to mind first. After all, uranium is the essential fuel that powers nuclear reactors, and these miners sit at the very beginning of the nuclear supply chain. From exploration to extraction, uranium mining companies are crucial players, and they have, until recently, attracted most of the attention in the space, especially from investors eager to capitalize on the rising demand for nuclear energy.

However, the nuclear industry extends well beyond uranium miners. In fact, some of the most groundbreaking innovations are happening further down the line in the Industrials and Utilities segments. Industrial companies are leading the charge in developing next-generation reactors, modular technologies, and advanced safety solutions that make nuclear power more efficient and versatile than ever. Meanwhile, Utilities play a key role in generating and distributing nuclear power to cities and industries, supporting everything from household electricity to the ever-growing needs of data centers and AI. Let’s take a closer look at the leading companies across these three segments—Uranium Miners, Industrials, and Utilities—that are shaping the future of nuclear energy.

Uranium Miners

Cameco Corp. (CCJ) (7.56% of NLR assets)
One of the world’s largest uranium producers, Cameco operates high-grade mines in Canada, the United States and Kazakhstan. As global demand for nuclear energy rises, Cameco is positioned to play a key role, supplying uranium to fuel reactors around the world. The company’s commitment to sustainability and operational efficiency also sets it apart in the mining industry.

Denison Mines Corp. (DNN) (4.53% of NLR assets)
A Canadian uranium company developing high-grade projects in the Athabasca Basin of northern Saskatchewan. Its main asset, the Wheeler River Project, includes some of the world’s richest uranium deposits and aims for low-cost, efficient production. With a stake in the McClean Lake mill and growing global demand for nuclear energy, Denison offers strong potential for investors seeking exposure to the expanding uranium market.

NexGen Energy (NXE) (4.52% of NLR assets)
NexGen Energy is advancing one of the largest development-stage uranium projects at the moment, the high-grade Rook I project in Canada. With plans for innovative mining and processing techniques, NexGen aims to set new standards for efficiency and environmental responsibility in uranium production.

Nuclear Industrials

Oklo Inc. (OKLO) (6.78% of NLR assets)
Oklo is working on ultra-compact, micro-reactors designed to power remote locations, industrial sites, and data centers. Its advanced reactor technology uses recycled nuclear fuel, making it a sustainable solution for the future of nuclear energy, especially in areas where conventional power grids are impractical.

BWX Technologies (BWXT) (5.97% of NLR assets)
BWX traces its history to the 1800s and was involved in the Manhattan Project of the 1940s. Today, it specializes in nuclear components and services, with a strong focus on advanced nuclear reactors for both commercial and military applications. The company is a leader in small modular reactor technology and is also at the forefront of nuclear fuel innovation.

Centrus Energy Corp. (LEU) (5.70% of NLR assets)
Centrus Energy, a U.S.-based nuclear-fuel supplier, provides low-enriched uranium (LEU) and is developing high-assay, low-enriched uranium (HALEU) for advanced reactors. Headquartered in Bethesda, Maryland, it operates enrichment and technical-services facilities, including a key plant in Piketon, Ohio. With global demand for clean, reliable nuclear power rising and new reactor designs in development, Centrus stands out as an investment opportunity thanks to its role in the fuel-supply chain, domestic manufacturing capability, and positioning in a strategic growth market.

Nuclear Utilities

Constellation Energy Corp. (CEG) (7.37% of NLR assets)
As the largest producer of carbon-free energy in the United States, Constellation Energy operates a fleet of nuclear plants that supply reliable, emissions-free electricity. Constellation is actively exploring partnerships to support next-generation nuclear technologies, as well as agreements to power datacenters for large technology companies like Microsoft.

Public Service Enterprise Group (PEG) (4.58% of NLR assets)
PEG owns and operates nuclear plants in the U.S. as part of its commitment to a low-carbon future. By investing in nuclear as a core part of its energy mix, PEG is helping meet regional power demands while supporting state and federal decarbonization goals.

PG&E Corp (PCG) (4.11% of NLR assets)
Pacific Gas and Electric (PG&E) operates the Diablo Canyon Power Plant, California’s last remaining nuclear power plant, which provides vital baseload power for the state’s energy grid. With plans to extend the plant's lifespan, PG&E aims to ensure a stable, low-emission power supply for millions of customers in California as the state transitions to renewable energy sources.

What to Consider When Investing in Nuclear Energy Companies

As the world shifts toward clean energy and decarbonization, nuclear energy companies are increasingly becoming an area of the market that investors are looking at. However, nuclear power comes with unique risks and factors that investors should weigh carefully.

Regulatory risks in the space are notable, as nuclear power is one of the most heavily regulated industries. Regulatory changes or heightened safety requirements can impact companies in numerous ways, making it essential to stay informed about the regulatory landscape. Geopolitical factors also play a role, especially in uranium mining, where operations in politically unstable regions can disrupt supply and influence pricing.

On the positive side, government support for nuclear power is growing as countries aim to meet decarbonization targets. Many governments offer incentives for advanced nuclear technologies, particularly small modular reactors, which could spur growth across the sector. Additionally, rising demand for clean, reliable energy, driven by sectors like data centers and AI, underscores nuclear’s role as a stable, round-the-clock energy source.

Finally, nuclear is a long-term investment, with new power facilities and technology often requiring years to construct and bring online. A diversified and global approach can help mitigate the risks tied to the nuclear industry, allowing investors to benefit from the sector’s robust potential while managing volatility for a more balanced return over the long term.

Invest in the Top Nuclear Companies Powering the Future

Investing in nuclear energy offers exciting potential as the world moves toward cleaner, more reliable power sources. From understanding the role of key industry players across uranium mining, advanced reactor technology, and power generation to carefully considering the unique risks and opportunities, investors can make informed decisions in this evolving sector.

^* NLR holdings above are as of 9/30/2025.