The global diesel generator market size was valued at USD 21.08 billion in 2025. It is expected to see considerable growth during the forecast period. The diesel generator market size is expected to grow from USD 36.33 billion in 2025 to USD 36.33 billion in 2033, at a compound annual growth rate of 7.04% during that period. The surging demand for energy, rapid industrialization, and reliable backup power solutions are driving up the market globally.
A diesel generator is a power-generating device that converts the chemical energy of the diesel fuel into electrical energy using a combination of a diesel engine and an alternator. It works on the principle of igniting diesel fuel inside the engine, which moves a mechanical shaft coupled to the alternator, thus producing electricity. Diesel generators have become available with different sizes of power capacity, ranging from small portable units for usage in homes and small businesses to large industrial generators with superior capacity for powering factories, hospitals, construction sites, data centers, and remote facilities. Their robustness, fuel efficiency, reliability, and ability to operate for extended hours result in their popularity for backup and off-grid applications.
Globally, diesel generators continue to see heavy demand due to surging energy requirements, recurring power cuts, and massive infrastructure developments in most regions that suffer from unstable or inadequate grid supply. Healthcare, telecom, oil and gas, manufacturing, and emergency services are some of the strong sectors reliant on continuous operation by diesel generators. In addition, rapid urbanization, remote sites, and disasters have also accelerated demand. As clean energy alternatives emerge, diesel generators remain very much in use because their performance, scalability, and cost relative to critical power applications have been proven.
Headquarters: United Kingdom
Aggreko Ltd (Aggreko), a subsidiary of Albion Acquisitions Limited, is a provider of power generation and industrial heating and cooling solutions. It produces power; installs and operates modular and mobile power plants; and develops and rents electric solutions and equipment. The company offers range of diesel and gas power generators; transformers; load banks; distribution boards, and other accessories for hire. Aggreko also provides cooling equipment such as modular cooling towers, air-cooled chillers and air conditioners, and industrial process cooling solutions for events, exhibitions, commercial complexes, hospitals, and hotels and malls. It serves utilities, oil and gas, services, contracting, shipping, mining, events, construction, manufacturing, military, petrochemical and refining sectors. It operates in Europe, South America, North America, the Middle East and Asia Pacific.
Headquarters: Sweden
Atlas Copco AB, or Atlas Copco, provides industrial productivity solutions worldwide. The company is primarily engaged in the design and manufacture of products comprising air treatment systems, compressors, assembly systems, and industrial power tools. Atlas Copco also provides vacuum solutions, machine vision, and power and flow solutions. Its products aim to enhance the key factors of customers' productivity, ergonomics, energy efficiency, and safety standards. The company caters to a wide range of industries including construction and manufacturing, among others, and process industries across various geographies worldwide. Atlas Copco has product development and manufacturing units in countries like India, Sweden, Germany, the US, South Korea, Belgium, China, Canada, and the UK.
Headquarters: India
Ashok Leyland Ltd (Ashok Leyland), a subsidiary of Hinduja Automotive Ltd, is an integrated automobile company. The company's product portfolio includes trucks, buses, light vehicles, power solutions, and defense vehicles. It also produces high-press die-casting extruded aluminum components for the automotive and telecommunications sectors. The company's products are widely used in various industries, including logistics, defense, industrial, and marine sectors. Ashok Leyland operates a vast network of touchpoints and service centers, ensuring efficient distribution and customer service. The company has a significant presence in different countries, with manufacturing facilities located in India, the United Arab Emirates, and the United Kingdom.
Headquarters: United States of America
Caterpillar Inc (Caterpillar) is an industrial goods and machinery company. The products offered by the company include among others, asphalt pavers, motor graders, skid steer loaders, wheel excavators, telehandlers, compactors, track-type loaders, wheel excavators, large wheel loaders, wide-body trucks, machinery components, hard rock vehicles, wheel dozers, landfill compactors, autonomous ready vehicles and solutions, select work tools, turbines, centrifugal gas compressors, reciprocating engines, among others. It also offers services such as insurance, sale contracts, other equipment-related loans, working capital loans, finance and operating leases, among others. The company provides its products to customers in the construction, mining, oil and gas, marine, and rail, among others. It operates in the Americas, Asia Pacific, Europe, Africa, and the Middle East.
Headquarters: United States of America
Cummins Inc (Cummins) is a power technology company. It designs, manufactures and distributes diesel and natural gas engines and power train-related component products. The company's offerings include air handling systems, after-treatment, fuel systems, control systems, turbochargers, filtration, electric power generation systems, transmissions, batteries, and electrified power systems. It offers products to original equipment manufacturers, dealers, distributors and other customers. It serves customers in diversified sectors across North America, Europe, Asia Pacific and South Pacific. The company has distribution, manufacturing and other facilities across the world.
Kirloskar is well-positioned in the diesel generator market in view of its extensive manufacturing experience, broad-based product portfolio, and strong presence in emerging markets. Kirloskar has been one of the oldest Indian industrial brands and has accumulated considerable engineering experience and customer goodwill for decades, especially in power backup applications. This ranges from small household units to big industrial systems applied to various industries such as telecommunications, commercial infrastructure, agriculture, and manufacturing. Its service network is extensive, with spare parts easy to locate, thus providing a competitive advantage through fast maintenance and high uptime. Moreover, the company is pursuing fuel-efficient and low-emission engine technology in keeping with evolving environmental regulations. Cost-effectiveness, coupled with a localized strategy, further enhances adoption in price-sensitive markets. With strong domestic and international distribution, the reputation of Kirloskar remains intact as a reliable, long-lasting, and affordable generator manufacturing company, thus positioning itself as a key player in developing and established power markets.
A diesel generator is a power-generating device that converts the chemical energy of the diesel fuel into electrical energy using a combination of a diesel engine and an alternator. It works on the principle of igniting diesel fuel inside the engine, which moves a mechanical shaft coupled to the alternator, thus producing electricity. Diesel generators have become available with different sizes of power capacity, ranging from small portable units for usage in homes and small businesses to large industrial generators with superior capacity for powering factories, hospitals, construction sites, data centers, and remote facilities. Their robustness, fuel efficiency, reliability, and ability to operate for extended hours result in their popularity for backup and off-grid applications.
Globally, diesel generators continue to see heavy demand due to surging energy requirements, recurring power cuts, and massive infrastructure developments in most regions that suffer from unstable or inadequate grid supply. Healthcare, telecom, oil and gas, manufacturing, and emergency services are some of the strong sectors reliant on continuous operation by diesel generators. In addition, rapid urbanization, remote sites, and disasters have also accelerated demand. As clean energy alternatives emerge, diesel generators remain very much in use because their performance, scalability, and cost relative to critical power applications have been proven.
Top Manufacturers
Aggreko
Establishment: 1962Headquarters: United Kingdom
Aggreko Ltd (Aggreko), a subsidiary of Albion Acquisitions Limited, is a provider of power generation and industrial heating and cooling solutions. It produces power; installs and operates modular and mobile power plants; and develops and rents electric solutions and equipment. The company offers range of diesel and gas power generators; transformers; load banks; distribution boards, and other accessories for hire. Aggreko also provides cooling equipment such as modular cooling towers, air-cooled chillers and air conditioners, and industrial process cooling solutions for events, exhibitions, commercial complexes, hospitals, and hotels and malls. It serves utilities, oil and gas, services, contracting, shipping, mining, events, construction, manufacturing, military, petrochemical and refining sectors. It operates in Europe, South America, North America, the Middle East and Asia Pacific.
Atlas Copco AB
Establishment: 1873Headquarters: Sweden
Atlas Copco AB, or Atlas Copco, provides industrial productivity solutions worldwide. The company is primarily engaged in the design and manufacture of products comprising air treatment systems, compressors, assembly systems, and industrial power tools. Atlas Copco also provides vacuum solutions, machine vision, and power and flow solutions. Its products aim to enhance the key factors of customers' productivity, ergonomics, energy efficiency, and safety standards. The company caters to a wide range of industries including construction and manufacturing, among others, and process industries across various geographies worldwide. Atlas Copco has product development and manufacturing units in countries like India, Sweden, Germany, the US, South Korea, Belgium, China, Canada, and the UK.
Ashok Leyland
Establishment: 1948Headquarters: India
Ashok Leyland Ltd (Ashok Leyland), a subsidiary of Hinduja Automotive Ltd, is an integrated automobile company. The company's product portfolio includes trucks, buses, light vehicles, power solutions, and defense vehicles. It also produces high-press die-casting extruded aluminum components for the automotive and telecommunications sectors. The company's products are widely used in various industries, including logistics, defense, industrial, and marine sectors. Ashok Leyland operates a vast network of touchpoints and service centers, ensuring efficient distribution and customer service. The company has a significant presence in different countries, with manufacturing facilities located in India, the United Arab Emirates, and the United Kingdom.
Caterpillar
Establishment: 1925Headquarters: United States of America
Caterpillar Inc (Caterpillar) is an industrial goods and machinery company. The products offered by the company include among others, asphalt pavers, motor graders, skid steer loaders, wheel excavators, telehandlers, compactors, track-type loaders, wheel excavators, large wheel loaders, wide-body trucks, machinery components, hard rock vehicles, wheel dozers, landfill compactors, autonomous ready vehicles and solutions, select work tools, turbines, centrifugal gas compressors, reciprocating engines, among others. It also offers services such as insurance, sale contracts, other equipment-related loans, working capital loans, finance and operating leases, among others. The company provides its products to customers in the construction, mining, oil and gas, marine, and rail, among others. It operates in the Americas, Asia Pacific, Europe, Africa, and the Middle East.
Cummins, Inc.
Establishment: 1919Headquarters: United States of America
Cummins Inc (Cummins) is a power technology company. It designs, manufactures and distributes diesel and natural gas engines and power train-related component products. The company's offerings include air handling systems, after-treatment, fuel systems, control systems, turbochargers, filtration, electric power generation systems, transmissions, batteries, and electrified power systems. It offers products to original equipment manufacturers, dealers, distributors and other customers. It serves customers in diversified sectors across North America, Europe, Asia Pacific and South Pacific. The company has distribution, manufacturing and other facilities across the world.
Product Launches in the Diesel Generator Market
Cooper Corp.
July 2025: Cooper Corporation is pleased to announce its partnership with Japan's Sinfonia Technology, world leader in advanced energy solutions. This strong partnership brings together decades of engineering expertise, rooted legacy and a shared vision towards accelerating innovation in the clean energy sector. The alliance will be formalized with the launch of the 'Daimon Genset,' India's first CPCB IV+ certified 10 kVA LPG genset. The genset, setting a new benchmark in efficient and sustainable power generation, will be exclusively manufactured by Cooper Corporation. It will be jointly marketed across India and exported globally, reflecting both companies' firm commitment to technological advancement, energy efficiency and environmental stewardship.Greaves Cotton Limited
Jan 2025, Greaves Cotton Limited, one of the leading diversified engineering companies in India, is participating in the on-going Auto Expo 2025 - The Motor Show at Bharat Mandapam, New Delhi, today by exhibiting its complete mobility solutions. The company is showcasing its new range of 'Made in India' product offerings spread across two-wheelers and three-wheelers, including concept vehicles, charging solutions, engines, powertrain systems, and retail aftermarket accessories.SWOT Analysis of the Company
Kirloskar
Strengths: huge experience in manufacturing, diversified product portfolio, strong presence in emerging marketsKirloskar is well-positioned in the diesel generator market in view of its extensive manufacturing experience, broad-based product portfolio, and strong presence in emerging markets. Kirloskar has been one of the oldest Indian industrial brands and has accumulated considerable engineering experience and customer goodwill for decades, especially in power backup applications. This ranges from small household units to big industrial systems applied to various industries such as telecommunications, commercial infrastructure, agriculture, and manufacturing. Its service network is extensive, with spare parts easy to locate, thus providing a competitive advantage through fast maintenance and high uptime. Moreover, the company is pursuing fuel-efficient and low-emission engine technology in keeping with evolving environmental regulations. Cost-effectiveness, coupled with a localized strategy, further enhances adoption in price-sensitive markets. With strong domestic and international distribution, the reputation of Kirloskar remains intact as a reliable, long-lasting, and affordable generator manufacturing company, thus positioning itself as a key player in developing and established power markets.
Mitsubishi Heavy Industries, Ltd.
Key strengths: engineering excellence, technological leadership, and global brand recognition
MHI enjoys powerful strengths in the diesel generator market, powered by engineering excellence, technological leadership, and global brand recognition. It makes high-capacity diesel generators reputed to deliver superior efficiency, long operational life, and robust performance in demanding conditions. MHI’s expertise in heavy machinery, aerospace-grade technology, and precision engineering ensures highly reliable power solutions capable of supporting large-scale industrial facilities, marine applications, data centers, and critical infrastructure. This strong dedication to innovation has led to advanced emission control systems and fuel optimization technologies that emphasize improving environmental compliance and operational cost. The company’s global service network and huge technical support ensure continuous customer satisfaction. Indeed, MHI has gained a reputation for the production of quality items, adhering to international safety standards, and the ability to provide customized power systems, making the company one of the trusted suppliers in mission-critical power generation environments all over the world.Recent Developments in the Diesel Generator Market
Deere & Company
August 2025, John Deere announced the approval of B30 biodiesel use across its entire portfolio of Tier 4 John Deere engines. This increases the prior approval of blends up to B20. The announcement will also be highlighted this week at the 2025 Farm Progress Show in Decatur, IL, where all the John Deere equipment operated in the company's Ride and Drive area will run on B30 biodiesel.Kohler
April 2023 - Kohler Co. announced the evolution of its Power businesses to Kohler Energy, aligning with Kohler's strategy to provide energy resilience for homes, businesses, and communities around the world. Kohler continues to invest in new product development to drive down CO2 emissions through low carbon fuels, improved engine efficiency and power density, EV controls, and grow its portfolio of high technology solutions. Most recently, Kohler was the first global manufacturer to certify all of its Diesel engines and generators on HVO, a 90% carbon reduced fuel.Sustainability Goal
Wärtsilä Corporation
Wärtsilä Corporation integrates sustainability into the operation of diesel generators by focusing on low-emission engine technology, efficiency improvements, and transitioning toward hybrid and renewable-compatible power solutions. It is working on moving diesel-based systems toward cleaner fuels like biodiesel, hydrogen blends, and synthetic fuels to minimize carbon footprints. Wärtsilä also focuses on lifecycle optimization by offering predictive maintenance, retrofitting programs, and efficiency upgrades that extend the life of equipment with reduced waste of resources. The company pursues carbon neutrality across operations and product ecosystems through smart energy system advancements, replacing traditional diesel solutions with hybrid microgrids and energy storage wherever possible. Wärtsilä conducts research in collaboration with innovation investments and climate-focused manufacturing practices that support a more sustainable future for global power generation, yet still maintains reliable energy supply for critical industries.Yanmar Co., Ltd.
Yanmar Co., Ltd. focuses on sustainability in the diesel generator market through the development of cleaner engine technologies, improving fuel efficiency, and developing alternative sources of energy. The firm actively invests in low-emission diesel engines that meet international environmental standards such as Tier 4 and Stage V regulations. Yanmar is also developing biofuels and hydrogen-compatible engines to reduce reliance on fossil fuels. Moreover, the company is trying to minimize carbon emissions from its manufacturing facilities by applying eco-friendly materials and enhancing energy efficiency. Besides, Yanmar promotes recycling and the circular economy by designing products with a longer life span, modular components, and easy serviceability. The company supports training programs regarding proper operation and maintenance in order to minimize unnecessary fuel consumption and harmful emissions. Combining innovation with environmental responsibility, Yanmar works toward the goal of providing reliable power solutions while achieving global climate goals.Market Segmentation
Diesel Generator Market
- Historical Trends
- Forecast Analysis
Market Share Analysis - Diesel Generator Market
Aggreko
Overview
- Company History and Mission
- Business Model and Operations
Workforce
Key Persons
- Executive Leadership
- Operational Management
- Division Leaders
- Board Composition
Recent Development & Strategies
- Mergers & Acquisitions
- Partnerships
- Investments
Sustainability Analysis
- Renewable Energy Adoption
- Energy-Efficient Infrastructure
- Use of Sustainable Packaging Materials
- Water Usage and Conservation Strategies
- Waste Management and Circular Economy Initiatives
Product Analysis
- Product Profile
- Quality Standards
- Product Pipeline
- Product Benchmarking
Strategic Assessment: SWOT Analysis
- Strengths
- Weaknesses
- Opportunities
- Threats
Revenue Analysis
The above information will be available for all the following companies:
- Aggreko
- Atlas Copco AB
- Ashok Leyland
- Caterpillar
- Cummins, Inc.
- Cooper Corp.
- Greaves Cotton Limited
- Deere & Company
- Kirloskar
- Kohler Co.
- Mitsubishi Heavy Industries, Ltd.
- Wärtsilä Corporation
- Yanmar Co., Ltd.
- Himoinsa (SIEY SA)
- Honda Motor Co., Ltd.
- Doosan Corporation
- Generac Holdings Inc.
- Shanghai Diesel Engine Co., Ltd. (SDEC)
- Kubota Corporation
- MTU Friedrichshafen GmbH
Table of Contents
1. Diesel Generator Market
3. Aggreko
The above information will be provided for all the following companies:
Companies Mentioned
- Aggreko
- Atlas Copco AB
- Ashok Leyland
- Caterpillar
- Cummins, Inc.
- Cooper Corp.
- Greaves Cotton Limited
- Deere & Company
- Kirloskar
- Kohler Co.
- Mitsubishi Heavy Industries, Ltd.
- Wärtsilä Corporation
- Yanmar Co., Ltd.
- Himoinsa (SIEY SA)
- Honda Motor Co., Ltd.
- Doosan Corporation
- Generac Holdings Inc.
- Shanghai Diesel Engine Co., Ltd. (SDEC)
- Kubota Corporation
- MTU Friedrichshafen GmbH
Methodology
In this report, for analyzing the future trends for the studied market during the forecast period, the publisher has incorporated rigorous statistical and econometric methods, further scrutinized by secondary, primary sources and by in-house experts, supported through their extensive data intelligence repository. The market is studied holistically from both demand and supply-side perspectives. This is carried out to analyze both end-user and producer behavior patterns, in the review period, which affects price, demand and consumption trends. As the study demands to analyze the long-term nature of the market, the identification of factors influencing the market is based on the fundamentality of the study market.
Through secondary and primary researches, which largely include interviews with industry participants, reliable statistics, and regional intelligence, are identified and are transformed to quantitative data through data extraction, and further applied for inferential purposes. The publisher's in-house industry experts play an instrumental role in designing analytic tools and models, tailored to the requirements of a particular industry segment. These analytical tools and models sanitize the data & statistics and enhance the accuracy of their recommendations and advice.
Primary Research
The primary purpose of this phase is to extract qualitative information regarding the market from the key industry leaders. The primary research efforts include reaching out to participants through mail, tele-conversations, referrals, professional networks, and face-to-face interactions. The publisher also established professional corporate relations with various companies that allow us greater flexibility for reaching out to industry participants and commentators for interviews and discussions, fulfilling the following functions:
- Validates and improves the data quality and strengthens research proceeds
- Further develop the analyst team’s market understanding and expertise
- Supplies authentic information about market size, share, growth, and forecast
The researcher's primary research interview and discussion panels are typically composed of the most experienced industry members. These participants include, however, are not limited to:
- Chief executives and VPs of leading corporations specific to the industry
- Product and sales managers or country heads; channel partners and top level distributors; banking, investment, and valuation experts
- Key opinion leaders (KOLs)
Secondary Research
The publisher refers to a broad array of industry sources for their secondary research, which typically includes, however, is not limited to:
- Company SEC filings, annual reports, company websites, broker & financial reports, and investor presentations for competitive scenario and shape of the industry
- Patent and regulatory databases for understanding of technical & legal developments
- Scientific and technical writings for product information and related preemptions
- Regional government and statistical databases for macro analysis
- Authentic new articles, webcasts, and other related releases for market evaluation
- Internal and external proprietary databases, key market indicators, and relevant press releases for market estimates and forecasts
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Table Information
| Report Attribute | Details |
|---|---|
| No. of Pages | 200 |
| Published | December 2025 |
| Forecast Period | 2025 - 2033 |
| Estimated Market Value ( USD | $ 21.08 Billion |
| Forecasted Market Value ( USD | $ 36.33 Billion |
| Compound Annual Growth Rate | 7.0% |
| Regions Covered | Global |
| No. of Companies Mentioned | 20 |
