Nuclear Battery Market Report 2026

The nuclear battery market size has grown strongly in recent years. It will grow from $73.28 billion in 2025 to $79.37 billion in 2026 at a compound annual growth rate (CAGR) of 8.3%. The growth in the historic period can be attributed to advancements in radioisotope energy conversion, use of nuclear batteries in space missions, demand for long-duration remote power, early adoption in medical implants, availability of specialized radioactive materials.

The nuclear battery market size is expected to see strong growth in the next few years. It will grow to $110.53 billion in 2030 at a compound annual growth rate (CAGR) of 8.6%. The growth in the forecast period can be attributed to increasing investments in space exploration programs, rising demand for ultra-long-life power sources, expansion of autonomous remote monitoring systems, growing applications in defense and aerospace, advancements in safe nuclear material handling. Major trends in the forecast period include increasing development of long-life nuclear power sources, rising use of betavoltaic energy conversion, growing demand for maintenance-free power systems, expansion of micro-power applications, enhanced focus on radiation safety.

The increasing expansion of defense and military applications is expected to accelerate the growth of the nuclear battery market going forward. Defense and military applications refer to the use of technologies, equipment, and systems designed to support national security, combat operations, surveillance, intelligence gathering, and strategic defense missions. The expansion of defense and military applications is increasing due to the growing need for enhanced national security, as advanced technologies improve surveillance, intelligence, and operational effectiveness in complex environments. Nuclear batteries contribute to this expansion by providing compact, reliable, and long lasting power sources that sustain critical operations in remote, high risk, and mission essential settings. For instance, in April 2024, according to the Cabinet Office, a UK based government department, defense spending is projected to rise to 87 billion pounds in 2030 to 2031, representing an increase of 23 billion pounds (28.65 billion dollars) compared to the 64 billion pounds (79.68 billion dollars) planned for 2024 to 2025, with investment reaching 2.5 percent of GDP by 2030, marking one of the largest defense expansions in a generation. Therefore, the increasing expansion of defense and military applications is accelerating the growth of the nuclear battery market.

Key companies operating in the nuclear battery market are emphasizing the development of advanced technologies such as radioisotope-based electrochemical systems to provide reliable, long-lasting, and high-density energy for specialized applications. A radioisotope-based electrochemical system is a power generation device that converts the energy released from radioactive decay into electricity through an electrochemical process. For instance, in June 2024, Infinity Power Solutions Inc., a US-based electrical contracting company, introduced a high-efficiency nuclear battery that employs a novel electrochemical energy conversion technique utilizing radioisotopes. This advanced battery is designed to deliver compact, durable, and maintenance-free power for remote sensors, medical implants, and aerospace systems, ensuring stable energy output for decades without the need for replacement or recharging. The innovation enhances energy density and safety while minimizing maintenance demands, making it ideal for critical applications operating in extreme or inaccessible environments.

In January 2025, Nano Nuclear Energy Inc., a US-based advanced technology company, acquired key assets of Ultra Safe Nuclear Corporation (USNC) for $8 million. Through this acquisition, Nano Nuclear Energy aims to advance its position as a leading developer of micro modular reactor technologies and expedite the deployment of efficient, small-scale nuclear power solutions. Ultra Safe Nuclear Corporation is a US-based company that develops radioisotope nuclear batteries designed to provide reliable and long-term power generation.

Major companies operating in the nuclear battery market are City Labs Inc., BetaBatt Inc., Widetronix Inc., Nusano Inc., Qynergy Corporation, Atomiq Inc., Betavolt New Energy Technology, NDB Inc (Nano Diamond Batteries), Infinity Power, Zeno Power, Arkenlight, Thermo PV, II‑VI Incorporated, Gem Systems Inc., Front Edge Technology Inc., Alpha Omega Power Technologies LLC, Nuclear Battery Corporation, Tritium Pty Ltd, StarCore Nuclear, Advanced Diamond Technologies, TRIUMF Isotopes, L3Harris Technologies, Lockheed Martin Space, Northrop Grumman, Radioisotope Power Systems (NASA)

North America was the largest region in the nuclear battery market in 2025. Asia-Pacific is expected to be the fastest-growing region in the forecast period. The regions covered in the nuclear battery market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the nuclear battery market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The nuclear battery market consists of sales of radioisotope micro power sources, alpha voltaic cells, nuclear fuel cells, thin-film batteries, and micro batteries. Values in this market are ‘factory gate’ values, that is, the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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