China’s Nuclear ‘Power Bank’ Poised to Revolutionize Clean Energy

In a quiet corner of tropical Hainan Island, a technological energy innovation is taking shape that could transform how we harness nuclear energy in the future. Linglong One (ACP100), which Chinese media have dubbed a nuclear ‘power bank,’ represents China’s first venture into compact nuclear reactor technology. As the world’s first land-based commercial small modular reactor (SMR) this 125-megawatt powerhouse has the potential to redefine nuclear energy’s role in the world.

Miniature Marvel: Engineering Breakthroughs 

Linglong One is not a downsized copy of traditional reactors. Its revolutionary design integrates the reactor core, steam generator, coolant pumps, and piping into a single compact module—just 10 meters long, 10 meters wide, and 14 meters high—small enough to fit on a cargo ship or even be transported by truck. As chief designer Song Danrong analogizes: “If mega-reactors like Hualong One are desktop computers, Linglong One is a laptop—with the all-critical components condensed into one portable unit.”

This compact, integrated design makes the system much safer than conventional large-scale reactors by effectively making catastrophic coolant loss—the most common reason for nuclear accidents—impossible. With this design, combined with passive safety systems and a radiation containment zone of just 300 meters (compared to 10km for traditional plants), Linglong One sets unprecedented safety benchmarks.

Unlike traditional reactors that must shut down for weeks during refueling, Linglong One’s compact design allows for:

– Offline Refueling: The reactor must be shut down, but the process is faster due to its smaller core size.

– Modular Fuel Replacement: The fuel assemblies can be removed and replaced in batches, reducing downtime.

– Flexible Fuel Options: Initially, it uses standard low-enriched uranium (LEU) fuel, but future models may support higher-assay LEU (up to 19.75%), extending refueling intervals to 5+ years.

Beyond Electricity: A Versatile Energy Solution 

Unlike conventional reactors built solely for grid power, Linglong One targets versatile clean energy applications:

– Heating & Industry: Providing steam for district heating or manufacturing plants

– Water & Remote Ops: Desalinating seawater for arid regions and powering offshore oil rigs

– Island & Mining Ops: Delivering stable electricity to remote islands or mines without grid access

When operational in 2026, this single unit will generate 10bn kWh annually—enough for 526,000 homes while slashing CO₂ emissions by 880,000 tons.

Global Race & China’s Strategic Edge

SMRs represent nuclear energy’s fastest-growing frontier. While Russia deploys RITM-200 reactors on icebreakers and floating plants, and U.S. firms like NuScale pursue modular designs, China’s Linglong One has an important commercial advantage: in 2016, it became the world’s first SMR to pass the IAEA’s safety review.

China is leveraging this head start internationally. Linglong One is a centrepiece of the Belt and Road Initiative; targeting energy-hungry countries with limited grid infrastructure—for example, Southeast Asian islands, deserts, and remote communities in Africa. Analysts project Chinese SMRs could capture 15 percent of the global market by 2050.

From Hainan to the High Seas 

Construction milestones reveal steady progress:

• July 2021: Official groundbreaking at Changjiang Nuclear Base
• August 2023: Core module successfully hoisted into place
• February 2024: Outer containment dome installed, sealing the reactor building

The project’s modular approach—manufacturing sections in factories before on-site assembly—adds to its cost and efficiency edge. This ‘building block’ strategy makes SMRs significantly quicker to construct compared to conventional reactors.

The Compact Energy Future

Linglong One is more than just a technical achievement—it signals a paradigm shift toward adaptive, decentralized nuclear power. For developing nations lacking adequate grid infrastructure, industries seeking carbon-free steam, or islands battling diesel dependency, this reactor offers a scalable alternative.

As William D. Magwood, Director of the OECD Nuclear Energy Agency, notes: “SMRs require less physical space, have a smaller environmental footprint, and consume less water—essential for countries facing water crises.” With China poised to export this model globally, Linglong One may soon let communities worldwide to plug into a clean, resilient energy future—one ‘power bank’ at a time.