Published on 30th June 2023
A generator serves as a cost-effective primary power source and a source of emergency/backup power.
Generators prevent discontinuity of daily activities and business operations by providing power when and where needed—whether the need is to supply electrical power during a power outage or portable power for hard-to-reach locations.
A diesel generator (also known as a “DG”) is a combination of an electric generator and a diesel engine, which converts chemical energy into mechanical energy via combustion. Thereafter, this mechanical energy is converted into electrical energy.
In addition to being a traditional choice for high KW applications, a diesel-powered generator is used at facilities with code requirements for on-site fuel storage, such as emergency response centers and hospitals.
Caterpillar Inc., Cummins Inc., and Generac Holdings, Inc. are the world’s three leading generator/genset manufacturers.
Read on to learn more about the top players in the global diesel generator market.
Table of Contents
Global Top 7 Diesel Generator Manufacturers 
Generac Holdings, Inc.
Kohler Power Systems, Inc.
Yanmar Co., Ltd. (Yanmar Holdings Co., Ltd.)
Blackridge Research & Consulting – Global Diesel Generators Market Report
Here are the world’s leading manufacturers of diesel generators/generator sets (listed alphabetically):
Location: Glasgow, United Kingdom
Founded by Luc Koopmans as a power generator rental business, Aggreko has grown into a world-renowned supplier of energy storage and power generation, as well as heating, cooling, and drying products.
With 60+ years of experience in enabling businesses and communities thrive with the best-in-class energy solutions, Aggreko is a trusted name in power generation and temperature control equipment.
Aggreko designs and builds generators at its industry-accredited manufacturing facility in Scotland.
Aggreko diesel generators are available in either a 20-ft ISO container or soundproofed canopy for enhanced durability and security and easy transportation by air, rail, road, or sea.
In addition, Aggreko provides a fast and flexible diesel generator rental service to meet varied power requirements of customers while saving on costs, fuel, and emissions. Aggreko also offers a load-on-demand set-up in which its portable diesel generators automatically turn on and off based on a site’s load demands.
Aggreko diesel generator range includes:
Furthermore, Aggreko diesel generators utilize remote monitoring technology to ensure 24/7 equipment surveillance, minimize risks, and maximize uptime.
Location: Stockholm, Sweden
The Atlas Copco Group was founded as “Atlas” (1873), which became “Atlas Diesel” (1917) before renamed “Atlas Copco” (1956).
Today, the 150-year-old company has customers in 180+ countries.
Atlas Copco provides robust, reliable, and versatile generators with easy serviceability and excellent best-in-class fuel economy.
Atlas Copco’s generator portfolio includes:
Mobile Gas & Diesel Generators
QAX Mobile Diesel Generators
The Atlas Copco QAX mobile diesel generators (up to 100 kVA) provide uninterrupted power on the move. The single axle sturdy undercarriage with parking brakes makes these reliable generators easy to move on the site.
In addition, the diesel generators come with a four-cylinder, high-performance engine and a highly efficient alternator and are flexible for a variety of applications (electrical pumps, wire saw-cutting machines, etc.).
Atlas Copco diesel generators are built for multi-application purposes (such as heavy-duty construction and rental applications) and help companies boost profitability while minimizing unplanned shutdown.
Location: Irving, Texas, United States
Caterpillar Inc. (known by the brand name “Cat”) is a globally leading manufacturer of construction and mining equipment, diesel-electric locomotives, industrial gas turbines, and off-highway diesel and natural gas engines.
Caterpillar mainly operates through three primary segments, including Construction Industries, Resource Industries, and Energy & Transportation. The company also provides financing and related services through its Financial Products segment.
Caterpillar’s Electric Power Systems include a comprehensive range of commercial and industrial generator sets used in a variety of applications. Caterpillar’s natural gas and diesel mobile generators are engineered for easy transportation and fast installation.
Caterpillar’s diesel generator sets are known for high efficiency, global emissions compliance, and low fuel consumption. With power potential from 6-5,720 eKW (7.5-7,150 kVA), these generator sets are built to world-class standards, easy to install, and available in a variety of options matching customers’ power needs.
Caterpillar’s diesel generator set portfolio includes (but not limited to) the following:
Maximum/Prime Power/Standby Rating
3516B 2500 kVA with an upgradeable package
Caterpillar commercial and industrial generators deliver clean, economical, and reliable power for prime, continuous, or standby power service.
Location: Columbus, Indiana, United States
Founded by Clessie Cummins, Cummins Inc. (Cummins) is a global power technology leader serving customers through a network of company-owned and independent distributor locations worldwide.
Cummins designs, manufactures, distributes, and services a broad range of power solutions. The company’s products range from electric and hybrid integrated power solutions to turbochargers and air handling systems.
Cummins’ generators are available to provide reliable power for every need—from data centers and hospitals to drilling and mining operations.
Cummins offers a comprehensive range of generators by the following applications, fuel types, and industries:
Cummins generator portfolio by “diesel” fuel type includes (but not limited to) the following:
Cummins manufactures all the major generator components, including the alternator, engine, control systems and containers, ensuring each element of a generator set works in harmony from the start.
Cummins diesel generators are designed for tough commercial applications and offer outstanding value with features like increased cooling efficiency, low harmonic distortion, and smooth operation.
Cummins’ solution design expertise and integrated equipment and communication software, as well as generator maintenance services help customers maintain resilient operations without any hassle.
Location: Waukesha, Wisconsin, United States
Generac Holdings, Inc. (also known as “Generac Power Systems, Inc.” and “Generac”) is a globally leading company that designs and manufactures energy technology solutions and other power generation products for commercial, industrial, and residential markets.
Generac Industrial Power (a business unit within Generac Power Systems) offers fully automatic transfer switches, accessories, generators and other products for commercial and industrial applications. In addition, the company provides state-of-the-art tools and educational programs for industry professionals.
Known as one of North America’s largest suppliers of power generation equipment, Generac Industrial Power has 50+ years of experience in designing and manufacturing diesel, natural gas, and bi-fuel generators.
Generac provides a wide range of 10 kW-30 kW to 1250 kW+ diesel generators built dependable for the toughest applications. In addition, in-house manufacturing and testing of every aspect ensures durability and reliability.
Generac diesel generators include (but not limited to) the following:
Generac’s diesel-fueled generators are known for easy maintenance, tolerance to dirty fuel, and excellent endurance in the harshest environments. Besides diesel generators, Generac provides natural gas generators for several applications—from assisted living centers and convenience stores to office buildings and schools.
Furthermore, Generac’s Industrial Distributor Network and in-house technical experts help customers with sizing, specs, and installation.
Location: Kohler, Wisconsin, United States
Founded by John Michael Kohler, Kohler Co. (Kohler or KOHLER) is a well-established manufacturing company that is best known for its plumbing products and also for cabinetry, engines, furniture, and generators.
Kohler Co. is the parent organization of Kohler Power Systems, Inc., which manufactures and markets generators for industrial, marine, mobile, and residential applications.
Kohler’s acquisition of SDMO created one of the world’s largest industrial generator manufacturers with 800+ locations worldwide.
Kohler manufactures a wide range of industrial gensets for standby, prime, and energy management applications. Kohler also offers marine, mobile, home, and portable generators apart from genuine spare parts and service.
KOHLER® Diesel Generators
Kohler’s diesel generator sets and their components are prototype-tested, factory-built, and production-tested apart from complying with EPA (Environmental Protection Agency) emergency stationary emissions requirements.
Kohler provides more than 60 models of diesel generators—ranging from 10 kW to 4 MW—and available with various KOHLER Decision-Maker® controls for basic, advanced, and paralleling requirements.
KOHLER® diesel generators are built for various applications, such as airports, commercial buildings, data centers, gas stations, and hospitals. The company also offers massive power options up to 4 MW with its KD Series generators known for their high fuel efficiency and performance.
KOHLER® diesel generators include (but not limited to) the following:
KOHLER® diesel generators meet stringent industry testing and quality standards and come with accessories, such as:
Location: Kita-ku, Osaka, Japan
Founded by Magokichi Yamaoka, Yanmar Co., Ltd. (Yanmar) is a well-established industrial equipment manufacturer with a comprehensive product portfolio—from off-road gas engines and rice transplanters to generators and propulsion engines.
Yanmar’s founder is said to have developed “the world’s first compact diesel engine.”
The leading diesel engine, agricultural and heavy machinery manufacturer became a holdings company in 2002.
Yanmar’s diesel generators include:
Here are the key features of YANMAR diesel power generators:
Apart from diesel/gas generators, Yanmar provides diesel pumps, diesel welders, and diesel lighting towers.
In addition to the companies listed above, other diesel generator makers have established a strong presence in the global market with a broad range of generator offerings.
For example, John Deere provides a diverse range of gasoline generators that are not only used by small property and business owners for backup electrical power but also by contractors and large property owners as virtual power plants.
Volvo Penta is another leading Swedish marine and industrial engine manufacturer supplying engines and complete power systems for marine and industrial applications.
Are you looking for a detailed company profile assessment of key industry players?
Blackridge Research & Consulting’s Global Diesel Generators Market report is what you need. The report provides deep insights into the competitive landscape and a comprehensive analysis of the diesel generator market by segmenting it based on the following:
The report also thoroughly examines the most influential growth drivers and restraints, emerging market trends, M&A developments, and more.
Furthermore, all report purchases come with up to 60 minutes of exclusive analyst access and post-purchase analyst support up to a year.
The global diesel generator market is expected to grow significantly due to key drivers, including:
Diesel generators are available in various electrical and physical configurations and built to global quality standards. For example, diesel generators are required to adhere to emissions standards, such as the EPA tier 4 emissions standard for diesel generators.
Global diesel generator manufacturers provide a variety of economical and efficient diesel generators and related products to ensure uninterrupted power supply for commercial, residential, and industrial users.