Aircraft Auxiliary Power Unit Market Report 2026

The aircraft auxiliary power unit market size has grown steadily in recent years. It will grow from $3.5 billion in 2025 to $3.62 billion in 2026 at a compound annual growth rate (CAGR) of 3.4%. The growth in the historic period can be attributed to early adoption of auxiliary power units to enable independent aircraft operation without ground support, increasing demand for reliable electric power supply for onboard aviation systems, development of combustion engine-based APUs using diesel, gas, or propane fuels, rising use of batteries and hydraulic accumulators to support engine starting functions, expansion of commercial aircraft fleets driving standardized installation of APUs.

The aircraft auxiliary power unit market size is expected to see steady growth in the next few years. It will grow to $4.11 billion in 2030 at a compound annual growth rate (CAGR) of 3.3%. The growth in the forecast period can be attributed to growing demand for fuel-efficient and low-emission apu technologies, increasing adoption of hybrid and electric APUs to reduce operational costs, rising aircraft production and modernization programs requiring advanced auxiliary power systems, technological advancements enhancing apu reliability, noise reduction, and thermal efficiency, expansion of regulatory emphasis on reducing ground emissions and improving energy efficiency in aviation. Major trends in the forecast period include demand for efficient auxiliary power units, lightweight and compact apu designs, integration of hybrid and fuel-efficient engines, increased focus on safety and redundancy systems, expansion in unmanned aerial vehicle apus.

The rising number of aircraft deliveries is expected to drive the growth of the aircraft auxiliary power unit (APU) market in the coming years. Aircraft deliveries involve the manufacturing, assembly, and transfer of aircraft to customers, including airlines, private owners, and military organizations. APUs supply energy to the aircraft’s electrical and pneumatic systems, enabling operation independently on the ground or during maintenance, thereby reducing reliance on external power sources and providing greater operational flexibility. For example, in January 2024, Airbus SE, a France-based aerospace and defense company, reported that in 2023, it delivered 735 commercial aircraft, marking an 11% increase compared to 2022. The company recorded 2,319 gross orders (2,094 net), including 1,835 A320 Family aircraft and 300 A350 Family aircraft. Consequently, the increasing number of aircraft deliveries is fueling the aircraft auxiliary power unit market.

Leading companies in the aircraft auxiliary power unit market are focusing on developing innovative solutions such as energy-efficient units to reduce fuel consumption, lower emissions, and enhance aircraft performance. Energy-efficient units are designed to use less fuel or power while delivering the same output, helping reduce operating costs, minimize environmental impact, and improve overall aircraft reliability, making them essential for modern commercial and military aviation. For instance, in September 2025, Pratt & Whitney, a US-based aerospace manufacturer, partnered with PBS Group, a Czech Republic-based technology company, to develop a next-generation APU designed to provide higher power density, reduced weight, and improved efficiency for both commercial and military aircraft. Leveraging the expertise of both companies, these APUs can start rapidly, operate at high altitudes, and support advanced aircraft systems, contributing to lower fuel consumption, reduced emissions, and enhanced overall performance. The new APU is also expected to offer greater flexibility in aircraft design by minimizing space and weight requirements while providing additional electrical power, improved thermal management, and support for electronic warfare systems in defense applications.

In October 2024, Snow Peak Capital LLC, a US-based private equity firm, acquired TurbineAero Inc. for an undisclosed sum. Through this acquisition, Snow Peak Capital aims to invest in TurbineAero’s next phase of growth, strengthen its market leadership, enhance operational capabilities, and support the company in delivering expanded world-class APU MRO services and aeroengine component solutions to a global customer base across commercial and military aerospace sectors. TurbineAero Inc., based in the US, specializes in manufacturing aircraft auxiliary power units (APUs).

Major companies operating in the aircraft auxiliary power unit market are Honeywell International Inc., Hamilton Sundstrand Corporation, Technodinamika, Kinetics Ltd., Rolls-Royce PLC, AEGIS Power Systems Inc., Pratt & Whitney Canada Corp., Safran Power Units SAS, United Technologies Corporation, The Dewey Electronics Corporation, Liebherr-Aerospace Lindenberg GmbH, General Electric Company, BAE Systems plc., Raytheon Technologies Corporation, BOSA S.A., JSC NPP Aerosila, PBS Group a. s., Microturbo, Falck Schmidt Defence Systems A/S, Hartzell Aerospace, The Marvin Group, AMETEK Airtechnology Group, Behlman Electronics Inc., Tecknowledgey, UTC Aerospace Systems, Aerospace Turbine Rotables Inc., AeroVironment Inc., Airborne Systems North America, Aircraft Electronics Associatio.

North America was the largest region in the aircraft auxiliary power unit market in 2025. Asia-Pacific is expected to be the fastest-growing region in the global aircraft auxiliary power unit market report during the forecast period. The regions covered in the aircraft auxiliary power unit market report are Asia-Pacific, South East Asia, 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.

Tariffs have impacted the aircraft auxiliary power unit market by increasing the cost of imported components such as batteries, combustion engines, and precision electrical systems, which has slowed production and raised costs across key regions like North America, Europe, and Asia-Pacific. Military and commercial aircraft segments are most affected due to high reliance on imported APUs. Positive effects include encouraging local manufacturing and sourcing strategies, which could lead to more resilient supply chains and long-term cost optimization for the market.

The aircraft auxiliary power unit market research report is one of a series of new reports that provides aircraft auxiliary power unit market statistics, including aircraft auxiliary power unit industry global market size, regional shares, competitors with an aircraft auxiliary power unit market share, detailed aircraft auxiliary power unit market segments, market trends and opportunities, and any further data you may need to thrive in the aircraft auxiliary power unit industry. This aircraft auxiliary power unit 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.

An aircraft's auxiliary power unit (APU) is a crucial onboard device that enables independent aircraft operation, eliminating the reliance on ground support equipment such as a ground power unit, external air-conditioning unit, or high-pressure air start cart. The APU supplies essential electric power to aviation systems and is commonly employed to initiate one of an airliner's main engines, as well as for bleeding air to start these engines.

The primary outputs of the aircraft auxiliary power unit include battery power and electric ground power. It finds application across a range of aircraft types, including fixed-wing, wide-body, narrow-body, rotary-wing, unmanned aerial vehicles, and others. Fixed-wing aircraft are those that rely on wings and their design for flight, catering to various end users such as military, commercial, and general aviation.

The countries covered in the aircraft auxiliary power unit market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The aircraft auxiliary power unit market consists of sales of battery, hydraulic accumulator, and combustion engines using diesel, gas, or propane fuel. 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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