Nuclear Battery Global Market Report 2025

The nuclear battery market size has grown strongly in recent years. It will grow from $67.71 billion in 2024 to $73.28 billion in 2025 at a compound annual growth rate (CAGR) of 8.2%. The growth in the historic period is driven by rising demand for long-lasting power sources, increasing adoption of nuclear batteries in space missions, growing interest in low-maintenance energy solutions, heightened awareness of alternative energy options, and a stronger focus on reducing dependence on fossil fuels.

The nuclear battery market size is expected to see strong growth in the next few years. It will grow to $101.72 billion in 2029 at a compound annual growth rate (CAGR) of 8.5%. The growth in the forecast period results from rising interest in miniature and micro power sources, growing expansion in deep sea exploration equipment, increasing adoption in space satellites, growing use in emergency and backup power systems, and rising focus on environmental sustainability. Major trends in the forecast period include integration with internet of things devices, innovation in modular battery systems, development of high efficiency beta voltaic cells, integration of hybrid energy systems, and innovation in diamond based nuclear batteries.

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 players operating in the nuclear battery market are NDB Inc., Zeno Power, Infinity Power, Korea Atomic Energy Research Institute (KAERI), City Labs Inc., BetaBatt Inc., Widetronix Inc., Nusano Inc., Qynergy Corporation, Direct Kinetic Solutions (DKS), NANO Nuclear Energy Inc., Atomiq Inc., Betavolt Technology, Beijing Betavolt New Energy Technology.

North America was the largest region in the nuclear battery market in 2024. 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, Western Europe, Eastern Europe, North America, South America, Middle East, Africa.

Note that the outlook for this market is being affected by rapid changes in trade relations and tariffs globally. The report will be updated prior to delivery to reflect the latest status, including revised forecasts and quantified impact analysis. The report’s Recommendations and Conclusions sections will be updated to give strategies for entities dealing with the fast-moving international environment.

The rapid escalation of U.S. tariffs and the resulting trade tensions in spring 2025 are significantly impacting the utilities sector, particularly in power generation, grid infrastructure, and renewable energy projects. Higher duties on imported equipment such as turbines, transformers, solar panels, and battery storage systems have increased capital and operational costs for utility providers, forcing them to reconsider project timelines or pass on expenses to consumers through higher energy rates. The water and waste management segments are also affected, with tariffs driving up the cost of essential machinery, piping, and treatment technologies. Additionally, retaliatory tariffs have disrupted global supply chains for critical raw materials like rare earth metals used in clean energy technologies, further complicating the transition to sustainable energy sources. The sector must now prioritize domestic sourcing, digitalization, and efficiency-driven innovations to manage escalating costs while ensuring energy security and regulatory compliance.

The nuclear battery market research report is one of a series of new reports that provides nuclear battery market statistics, including nuclear battery industry global market size, regional shares, competitors with a nuclear battery market share, detailed nuclear battery market segments, market trends and opportunities, and any further data you may need to thrive in the nuclear battery industry. This nuclear battery market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.

A nuclear battery is a device that generates electricity by converting the energy released from radioactive decay. It serves as a long-lasting and dependable power source, particularly useful in remote or extreme environments where traditional batteries or fuel sources are not feasible.

The key types of nuclear batteries include radioisotope thermoelectric generators (RTGs), betavoltaic batteries, thermophotovoltaic cells, and diamond nuclear batteries. Radioisotope thermoelectric generators are devices that convert heat produced by the natural decay of radioactive isotopes into electricity, delivering sustained power for remote or space-based applications. They function through both thermal and non-thermal conversion methods and are available in low, medium, and high-power output ranges. These batteries are utilized across various applications, including aerospace and defense, medical devices, consumer electronics, industrial operations, and remote power systems, serving industries such as automotive, telecommunications, healthcare, military and defense, and the energy sector.

The countries covered in the nuclear battery market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, 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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