A diesel generator (DG) also known as a “diesel genset” and “diesel generator set,” provides backup power to help keep day-to-day operations running smoothly in the event of a power outage or during power fluctuations. An uninterrupted power supply is essential for homes, businesses, and industries. 

A diesel generator (DG) uses a combination of an electric generator (also known as a “power generator”) and a diesel engine to generate electricity from diesel fuel.

A diesel generator control panel is the user interface that enables operators to control the generator and review the current status, system diagnostics, and overall functions of the generator.

Furthermore, a silent diesel generator (also known as a “silent diesel genset”) has the same engine as a traditional generator. However, it operates inside a generator enclosure or a sound-proof container, which dampens the sound.

Do you want to learn more about the top 10 diesel generator brands in India? Read on.

Top 10 Diesel Generator Manufacturers in India [2025]

Caterpillar Inc.

Founded by Benjamin Holt and C. L. Best, Caterpillar Inc. (Caterpillar) is known as “the world’s largest manufacturer of construction equipment.” The Caterpillar is known to supply one of best generator in India. It has key offices in Bengaluru (Bangalore) and Chennai, with manufacturing facilities in Aurangabad, Hosur, and Tiruvallur. Caterpillar also has a technical center in Chennai.

Caterpillar’s rich history in India can be traced back to the 1930s when the company’s track-type tractors and scrapers were among the first machines used for building roads in the country.

Caterpillar provides commercial and industrial generator sets in a variety of options to match diverse power needs—simplifying selection and installation for consumers.

Caterpillar diesel-fueled generator sets (7.5-7,150 kVA) are designed for global emissions compliance, high efficiency, and low fuel consumption.

The following Caterpillar diesel power generator models are based on country of use (India), with some models available exclusively for the Indian market:

On 15th September, 2025, Caterpillar and SoEnergy commissioned a 35-MW bridge power plant using 31 containerized Cat generator sets.

On 20th August 2025, Caterpillar Inc launched new Cat® D1500 diesel generator set which delivers best-in-class power density by delivering 1.5 MW of standby power from a compact 32.1-liter Cat C32B engine.

MTU (Rolls-Royce PLC)

Stylized as “mtu,” MTU is a Rolls-Royce Power Systems AG company and a leading provider of industrial generators for high-demand power environments.

MTU derives its name from “Motoren- und Turbinen-Union,” which refers to “Motor (Engine) and Turbine Union.”

As a product and solution brand of Rolls-Royce, MTU provides world-class power solutions for various applications, such as:

• Airports

• Data centers

• Healthcare facilities

• Independent power plants

• Manufacturing plants

• Wastewater treatment plants

Known for robust design and optimal fuel consumption, the MTU diesel generator set (DG set) portfolio includes:

Mtu Series 4000 (1,600-4,000 kVA) – Delivers highest level performance for decentralized energy supply.

Mtu Series 2000 (770-1,270 kVA) – Delivers immediate power output even in extreme ambient conditions.

Mtu Series 1600 (460-730 kVA) – Represents mtu power, reliability, and technology for this power range.

mtu Series 0080 – mtu Series 0225 (30-94 kVA) – Like their larger genset counterparts, these lower power range generator sets feature high efficiency, low fuel consumption, and excellent reliability.

Mtu diesel generator sets are designed to operate even in extreme conditions and are available with six different ratings for flexible, decentralized energy.

Here are the significant features of mtu diesel gensets:

• High power density

• Low emissions

• Low fuel consumption

• Mature and reliable design

• Superior transient operation

On 9th October, 2025, Rolls-Royce presented the mtu 20V4000 gas generator at the Cannes Yachting Festival. This 2.8 MW generator features fast ramping up in 45 seconds, and is designed for data center applications, offering both primary and backup power solutions.

On 16th September 2025, Rolls-Royce was awarded an order to supply a second mtu large-scale battery storage system to Zeewolde in the Netherlands. Starting from 2026, mtu EnergyPack will help integrate renewable energies into the grid and support grid stability.

On 13th March 2025, MTU (Rolls-Royce PLC) won an order to supply 2 mtu Series 400 generator sets to provide emergency backup power for European Commission in Luxembourg.  This includes 20-cylinder Series 4000 mtu engines for the Jean Monnet 2 building complex in Luxembourg.

On 13th February 2025, Rolls Royce introduced its 40% more efficient mtu series 1600 gensets on the 50 Hertz market. These are designed with a base engine 12V1600 with up to 996 kWm which can be used for numerous applications.

Mitsubishi Heavy Industries

 Mitsubishi Heavy Industries (MHI) is one of the largest diesel generator manufacturers in India. The company offers high-performance diesel generator solutions through its group company, Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Established in 1917. MHI is the first Japanese company to develop and build a diesel engine in the industry.

MU-G Series - Diesel generator

MHI’s MU-G Series diesel generator offers a customizable approach to power generation. Here are the key features of the MU-G Series:

• Wide Output Range: From 735 kVA to 4500 kVA to meet diverse power requirements.

• Fuel Efficiency: Ideal for continuous operation with excellent fuel economy, reducing long-term costs.

• Compact Design: Space-efficient systems suitable for installations with minimal footprint.

• High Voltage Compatibility: Available for low to high-voltage applications.

• Customizable Options: Includes remote cooling systems, oversized radiators for high-temperature environments, and emission-compliant designs.

Mitsubishi Generator Series (MGS)

The Mitsubishi Generator Series (MGS) is a modular diesel generator solution designed for flexibility and efficiency. With a wide range of power outputs, operational applications, and customizable features, MGS offers solutions tailored to client-specific needs.

Benefits of the MGS Series:

• Rapid Delivery and Installation: Simplified setup ensures quick deployment.

• Operational Flexibility: Proven reliability for diverse applications, including black start capability for uninterrupted power supply.

• Cost-Effectiveness: High performance at a low running cost.

• Robust Features: Options for parallel operation with commercial power, oil and gas field applications, and containerized systems.

• Environmental Compliance: Low emissions, noise, and vibration

Advanced Diesel Engine Technology

MHI’s diesel engines are renowned for their versatility and durability, with capacities ranging from 0.5 to 56,400 horsepower. These engines are engineered with Mitsubishi turbochargers in the same facility, ensuring seamless integration, exceptional fuel efficiency, and robust performance.

Key Advantages of Mitsubishi Diesel Engines:

• High Power Outputs: Catering to demands ranging from 3,760 kW to 15,400 kW.

• Fuel Flexibility: Compatible with diesel, heavy fuel oil (HFO), and other fuels.

• Durability and Reliability: Proven operational life with over 120,000 hours in demanding conditions.

• Low Maintenance: Long intervals between planned maintenance reduce downtime and costs.

• Environmentally Friendly: Low emissions, noise, and vibration for sustainable operation.

On 12th March 2025, Mitsubishi Heavy Industries achieved rated operation using 100% hydrogen fuel in a trial run of 500 kW-class hydrogen engine generator set at its Sagamihara Plant.

Honda India Power Products Ltd.

Honda India Power Products Limited (HIPP), formerly known as Honda Siel Power Products Ltd. (HSPP), is India’s No. 1 power products company and leading diesel generator manufacturer. HIPP was established on September 19, 1985, and is a subsidiary of the renowned Honda Motor Co., Japan. 

Over the years, the company has solidified its position as a market leader in diesel generator manufacturing with its state-of-the-art manufacturing facility located in Greater Noida. HIPP specializes in manufacturing and marketing a wide range of gensets including portable generators, silent generators and gas gensets.

Top Diesel Generators by Honda

Honda's range of diesel generators:

Honda EU70is

• Power Output: Maximum 7kVA, Rated 5.5kVA

• Features: Equipped with a 4-stroke GX390 engine, advanced Electronic Fuel Injection, and sine-wave inverter technology for smooth, high-quality power delivery. Its push-button starter and quiet triple-chamber muffler enhance user convenience.

• Applications: Ideal for heavy-duty commercial and domestic use.

Honda EU30is

• Power Output: Maximum 2.8kVA

• Features: Powered by Honda’s GX200 4-stroke engine with an electric self-start mechanism. It offers reliable performance for diverse applications.

Honda EU30i

• Power Output: Maximum 2.8kVA

• Features: Features a recoil start mechanism and the same reliable GX200 engine, offering excellent portability and versatility.

Honda EX2400s

• Power Output: 1.8kVA

• Features: Designed for quiet operation with a covered body, making it ideal for noise-sensitive environments like homes, shops, or outdoor settings.

Honda EP1000

• Power Output: 0.75kVA

• Features: Lightweight and portable, the EP1000 is perfect for small appliances, tools, and charging devices, offering unmatched ease of use.

Mahindra Powerol Ltd.

Mahindra Powerol Ltd. is a business unit of Mahindra Group’s Automotive & Farm Equipment Sectors (AFS). The Mahindra Group is a billion-dollar Indian multinational conglomerate with operations in 100+ countries.

Mahindra Powerol manufactures the best diesel generator in India for the defense, railway, and telecom sector. The company’s diesel gensets are also installed at various locations, such as:

• Banks

• Bungalows

• Construction sites

• Hospitals

• Petrol pumps (gas stations)

• Small offices and shops

• Supermarkets

Mahindra Powerol DG (diesel generator) models include:

• 5 kVA

• 10 kVA/15 kVA

• 20 kVA-25 kVA

• 30 kVA/35 kVA/40 kVA/45 kVA

• 50 kVA/62.5 kVA

• 75 kVA-125 kVA

• 160 kVA/180 kVA/200 kVA

• 250 kVA/320 kVA

• 400 kVA/500 kVA/625 kVA

• 700 kVA-3500 kVA

Mahindra Powerol’s “Spectro” series (5 kVA) with the air-cooled cooling system is one of the most silent gensets with sturdy wheels and a long handle for easy mobility.

Every Mahindra Powerol’s DG set complies with the most stringent emission and noise norms stipulated by CPCB (Central Pollution Control Board of India).

While the DG set’s effective governing system ensures the equipment’s total safety by controlling rated voltage fluctuations, the engine’s small footprint makes the DG set ideal even for roof mountings.

Here are the significant features of Mahindra Powerol DG sets:

• Compact and eco-friendly design

• Large fuel tank

• Longer engine life

• Low maintenance cost

Mahindra Powerol maintains a vast network of authorized dealers and skilled service engineers with 400+ sales and service touchpoints across different cities in India.

In September 2025, Mahindra Powerol introduced a new range of 9.3-litre engine diesel generators in Nepal. These gensets are part of the mPOWER series and are equipped with advanced CRD engines.

Tata Motors Gensets

Tata Motors is a globally renowned automotive and engineering powerhouse based in India. Tata Motor Gensets is an expertise division of Tata Motors focused on a reliable range of diesel generator sets. Tata Motors Gensets are powered by its advanced engines, ensuring unmatched performance, durability, and efficiency. The company is also one of the best silent diesel generator brands in india.

Genset Range

Tata Motors offers a wide range of Gensets for various power requirements from 25 kVA to 125 kVA.

Key Genset Models Include:

• 25 kVA to 35 kVA: Compact and efficient solutions for small-scale industries and commercial spaces.

• 40 kVA to 70 kVA: Designed for mid-size industries, offering a balance of power and efficiency.

• 82.5 kVA to 125 kVA: Ideal for large-scale industrial applications with powerful engines and low operational costs

Advanced Engine Technology

Tata Motors’ engines are produced at WCQ Level-3 plants, adhering to the highest standards of quality and production processes. These engines offer:

• Fuel Efficiency: Reducing operational costs and ensuring low total cost of ownership.

• CPCB II Emission Compliance: Ensuring adherence to the latest environmental norms.

• Durability and Reliability: Proven performance in commercial vehicles now tailored for power generation.

Key Features and Benefits

• Low Operating Costs: High fuel efficiency coupled with minimal maintenance requirements.

• Noise and Carbon Footprint Reduction: Quiet operation and environmentally friendly design. 

• Robust Durability: Designed for continuous operation, even in extreme conditions.

• Comprehensive Support: Backed by Tata Motors' extensive network of 1,500+ service touchpoints across India.

• Two-Year Warranty: Offering peace of mind and assurance of quality.

Highlights of Popular Models

• 50 kVA Genset: Powered by the highly efficient 497 Engine, offering best-in-class fuel efficiency and reliability.

• 82.5 kVA Genset: Built on the 697 Engine, this model is designed for large-scale applications, balancing power and environmental compliance.

• 125 kVA Genset: A powerhouse solution with low maintenance needs, delivering consistent performance for high-demand industries.

Cummins India Limited

 Cummins India Limited (Cummins) is among the Cummins Group’s seven legal entities in India and a leading diesel and natural gas engine manufacturer.

Cummins India Limited is a consolidated subsidiary of Cummins Inc. and operates through three business segments—Engine, Power Systems, and Distribution.

Cummins provides a variety of generators by fuel type, such as diesel generators, gas generators, natural gas generators, and propane generators.

Cummins diesel generator provides 55 models (7.5 kVA-3750 kVA) for residential and commercial sector applications.

Cummins diesel generators include but are not limited to the following (prime power rating in kVA):

• C7.5D5P (7.5 kVA)

• C10D5P (10 kVA)

• C12 D6T (11-14 kVA)

• C20D5P (20 kVA)

• C40D5P (40 kVA)

• 6BTA5.9 I-Range (82-155 kVA)

• 6CTA8.3 (160-213 kVA)

• NTA855 (275-456 kVA)

• KTA38 (900-1160 kVA)

• KTA50 (1250-1608 kVA)

• QST30 (1125-2281 kVA)

• QSK95 (3125-3750 kVA)

Here are the main features of Cummins diesel generators:

• Excellent reliability

• Fast response to load changes

• Low emissions

• Optimum performance

• Versatility for stationary standby and prime power

With 9,000 dealer locations in 190 countries and six continents, as well as 500 company-owned and independent distributor facilities, Cummins’ global capabilities and local support help customers receive prompt and professional assistance.

Ashok Leyland Ltd.

Founded as “Ashok Motors,” Ashok Leyland Ltd. is a leading Indian automotive manufacturer and best generator company in India, owned by the Hinduja Group. Ashok Leyland’s founder Raghunandan Saran set the company up in collaboration with Austin Motor Company, England, to assemble Austin cars.

According to Ashok Leyland, it is "India’s second-largest commercial vehicle manufacturer." Apart from a wide range of buses, defense vehicles, light vehicles, and trucks, Ashok Leyland provides power solutions, such as agricultural engines, diesel generators, industrial engines, and marine engines.

Ashok Leyland’s “LEYPOWER” brand of diesel generator sets are aesthetically designed, environmentally friendly, and highly fuel efficient with low operating costs.

Ashok Leyland’s diesel genset portfolio includes 30 models with varying power ratings (kVA):

• GENSET MODEL LP5D (5 kVA)

• GENSET MODEL LP20D1 (20 kVA)

• GENSET MODEL LP30D (30 kVA)

• GENSET MODEL LP15D1 (15 kVA)

• GENSET MODEL LP25D1 (25 kVA)

• GENSET MODEL LP35D/LP40D (35/40 kVA)

• GENSET MODEL LP50/LP62.5D (50/62.5 kVA)

• GENSET MODEL LP62.5D1 (62.5 kVA)

• GENSET MODEL LP75D/LP82.5D (75/82.5 kVA)

• GENSET MODEL LP100D (100 kVA)

• GENSET MODEL LP125D (160 kVA)

• GENSET MODEL LP160 (5 kVA)

• GENSET MODEL LP250D (250 kVA)

• GENSET MODEL LP 320 (320 kVA)

• GENSET MODEL LP 350 (350 kVA)

• GENSET MODEL LP 380 (380 kVA)

• GENSET MODEL LP 400 (400 kVA)

• GENSET MODEL LP 415 (415 kVA)

• GENSET MODEL LP 450 (450 kVA)

• GENSET MODEL LP 500 (500 kVA)

• GENSET MODEL LP 600 (600 kVA)

• GENSET MODEL LP 650 (650 kVA)

• GENSET MODEL LP 750 (750 kVA)

• GENSET MODEL LP 1010 (1010 kVA)

• GENSET MODEL LP 1250 (1250 kVA)

• GENSET MODEL LP 1500 (1500 kVA)

• GENSET MODEL LP 1750 (1750 kVA)

• GENSET MODEL LP 2000 (2000 kVA)

• GENSET MODEL LP 2250 (2250 kVA)

• GENSET MODEL LP 2500 (2500 kVA)

Here are the major features of Ashok Leyland diesel generators:

• Better block-loading capability

• Compact engine

• Continuous duty power rating

• Diesel generator repair and service

• Low oil and fuel consumption

• Low ownership cost

• Minimal vibrations and lower noise levels

• Nationwide after-sales and parts support

• Reliability and ruggedness

• Standardized design for the entire range

On 1st September 2025, Ashok Leyland announced it will invest USD 571.4 million in domestic EV battery production over the next 7-10 years.

Kirloskar Oil Engines Limited

Kirloskar Oil Engines Limited (KOEL) is the flagship company of the over 130-year-old Kirloskar Group. KOEL is one of the world’s largest power-generating set manufacturers, with four state-of-the-art manufacturing units, four regional offices, and 13 network offices across India.

The well-established equipment manufacturer has a comprehensive product portfolio—ranging from farm mechanization and power generation products to electric motors and industrial engines.

Kirloskar Green Gensets, Kirloskar diesel generator and Kirloskar Portable & Stationary are KOEL’s well-known diesel genset brands. Kirloskar Green is designed to provide optimum power backup for various commercial purposes. According to the company, its “KOEL Green” is “India’s largest-selling and most trusted Genset brand for over a decade.”

KOEL’s industrial diesel generator products include:

• 3 kVA-5 kVA

• 5 kVA-12.5 kVA (SLIM POWER)

• 15 kVA-30 kVA

• 40 kVA-160 kVA

• 180 kVA-250 kVA

• 320 kVA-625 kVA

• 750 kVA-1010 kVA

Here are the key features of KOEL gensets:

• A choice of air-cooled or water cooled diesel generators

• Best-in-class fuel efficiency with O2E (Optimal Operating Efficiency) technology

• Controller-based easy push start

• CPCB II norm compliance (latest government emission norms)

• Easy maneuverability

• Ergonomically designed handles

• Quick and affordable doorstep service

• Robust and reliable products

• Routine maintenance indicator

Perkins Engines Company Limited

Perkins Engines Company Limited is a world-renowned diesel engine provider for various applications. Apart from state-of-the-art manufacturing facilities in Aurangabad and Hosur, Perkins has two distribution partners in India—Gmmco Power and Powerparts Private Limited.

With 90 years of experience in designing and manufacturing high-performance diesel engines, Perkins offers a comprehensive product range, including:

400 Series: The Perkins 400 Series is an extensive family of engines in the 0.5-2.2-liter range designed to meet global emission standards and provide optimized performance. For example, Perkins’ smallest engine—the 402D-05—combines performance, low operating costs, and an efficient, ultra-compact package suitable for small industrial applications.

904 Series: The Perkins 904 Series is designed to meet current and future emission standards with the flexibility to adapt to evolving machine technologies. Perkins 2.8- and 3.6-liter options provide adaptable and robust power for agriculture, compact construction, and industrial machines.

1100 Series: The Perkins 1100 Series is available in the 3-cylinder, 4-cylinder, and 6-cylinder variants and is known for excellent reliability and low cost of ownership. Apart from complying with regulated and unregulated emission standards, these engines provide superior performance for agriculture, construction, and other sectors.

1200 Series: The Perkins 1200 Series engine range is designed to operate in different environmental conditions while improving productivity and reducing cost.

1500 Series: The Perkins 1500 Series is built on a proven, validated core, which makes the engine suitable for supplying backup power (health facilities) and prime power (factory units), among other applications. Due to their outstanding capability at altitudes and in intense heat, these engines are ideal for meeting the needs of electric power customers living in tough climate conditions.

1700 Series: The Perkins 1700 Series is a compact and robust family of industrial engines designed to boost performance and productivity while saving customers money on installation and ownership.

2200 Series: The Perkins 6-cylinder 2200 Series is a powerful family of diesel engines known for the low cost of installation and ownership, as well as robust and reliable performance even in the harshest working environments.

2400 Series: The Perkins 2400 Series is designed for low-cost installations with low heat rejection and is certified to meet various international emissions standards without sacrificing performance or reliability.

2500 Series: The Perkins 2500 engine range offers high performance with economy and reliability. In addition, the 2500 Series delivers much-needed power for different purposes—from off-highway applications to efficient and reliable electricity generation.

2800 Series: Known for reliability and robust performance, the 6-cylinder Perkins 2800 Series meets global emissions standards—providing the flexibility for customers to access multiple territories more affordably.

4000 Series: Available in 6- to 16-cylinder models, the Perkins 4000 Series delivers performance and reliability while achieving regulated and unregulated emissions standards worldwide.

5000 Series: The Perkins 5000 Series has been optimized and tested to deliver cost-effective and reliable performance when and where needed with excellent load acceptance, low fuel consumption, and low maintenance costs.

Furthermore, Perkins’ diesel engine series is categorized under “certified” and “fuel-optimized models”:

Other Prominent Diesel Generator Manufacturers

Here is the list of top diesel generator manufacturers in the industry:

• Sterling generators

• Dazzle power generators

• Escorts Silent Diesel Generators

• JCB Diesel Generators

• Eicher

• Greaves Power

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Conclusion

Diesel generators provide reliable power for the following and many more:

• Airports

• Commercial buildings

• Data centers

• Homes

• Hospitals

• Large manufacturing industries

• Metro rail stations

• Mobile homes

• Small offices

• Universities

A diesel generator also serves as power generation equipment to supply electricity to remote areas. While portable generator sets are ideal for domestic use and small businesses, large industrial generators are preferred for high-power needs.

Diesel genset suppliers (including silent generator set suppliers) specialize in manufacturing durable and reliable gensets suitable for extreme operating conditions in India.

As power demand varies day and night and on weekdays and weekends, engine capacity is optimized to enable the genset to adjust to sudden load additions.

In addition to providing diesel generating sets with robust configurations, diesel generator companies also offer installation and maintenance services and quality spare parts to help customers make the most of the product offerings.

Diesel generator manufacturers in India ensure convenient and efficient power by providing a wide range of diesel gensets or generators built to the highest quality and performance standards.