By Saksham Arora India relies on trustworthy power to a large extent. Whether for homes, hospitals, factories, telecom towers or data centers a stable electricity supply is important. Diesel generators (DG sets) and power backup systems are still a vital need throughout the country. As demand increases, some manufacturers are superior in quality, innovation, fuel efficiency and nationwide service.
Here’s the Top 10 Leading Generator Manufacturers in India based on the range of products, their presence in the market, their technological prowess and customer trust.
1. Cummins India Ltd.
Cummins India Ltd. is the market leader in India for generators in terms of unmatched scale and technology. Through its flagship entity Cummins India Limited, it produces diesel, natural-gas engines, as well as complete generator systems. Their engine business is for commercial vehicles and industrial equipment; while their power systems business is for heavy-duty engines (700 – 4500 HP) for marine, rail, defence and mining businesses.
Cummins produces generator sets from 7.5 kVA to 3750 kVA, too. Their products have strict emission norms (CPCB IV+), so they are ideal for data centers, hospitals, factories and large commercial installations. With plants in Pune (Ranjangaon, Pirangut) and Phaltan, they cater to the domestic as well as the export market. Their large network of distributors ensures that there is support even in far-flung territories.
When you think of “power solutions in India”, Cummins is still the first name to come when it comes to heavy-duty, eco-compliant and reliable generators.
2. Kirloskar Oil Engines Ltd. (KOEL)
Kirloskar Oil Engines Ltd. (KOEL) is one of the first preferences of Indian businesses with flexible and trustworthy alternative power requirements. KOEL manufactures air-cooled and liquid-cooled diesel engines and gensets under various brands such as KIRLOSKAR Green, KIRLOSKAR Portable & Stationary. They provide power solutions from small power devices as small as 2.1kW portable units to large-sized industrial generators as large as 5200 kVA for telecom, manufacturing, hospitality, and construction industries.
KOEL combines tradition and innovation; their research facilities allow them to design efficient, emission compliant and fuel-saving engines. Their “O2E Series” is focused on decreasing fuel consumption while keeping performance the same. With manufacturing plants spread across Pune, Nashik, Rajkot and Kolhapur, KOEL enjoys its prestige as one of India’s most trusted manufacturers of DG-set.
3. Mahindra Powerol
Mahindra Powerol is a division of Mahindra & Mahindra Ltd. and, as such, has grown fast since it entered power generation in 2001-02. Over a short span of time, it crossed the [?]1,000 crore mark and is currently offering diesel generator sets in the range of 5 kVA to 625 kVA. Its strong presence in telecom infrastructure positions Mahindra Powerol as a brand of choice for companies such as telecom operators, banks, hospitals and manufacturing units.
Mahindra Powerol has received the prestigious Deming Prize in 2014 recognizing its quality systems and consistency. With a vast network of retail showrooms, more than 200 dealers and an effective after-sales service centres, it offers reliable power solutions across India. For small to mid-size commercial applications, especially for places where reliability is a matter of concern, Mahindra’s Powerol is the name to look out for.
4. Honda India Power Products Ltd.
Honda India Power Products Ltd. (HIPP) operates under a well-trusted brand worldwide, that is Honda. Since 1985, it has specialized in portable generators, water pumps, tillers, lawn mowers and general purpose engines. HIPP manufactures small to medium sized portable generators ideal for use in homes, small offices, workshops, rural power supply needs and outdoor functions.
Their “Ultra Silent” and “Pure Sine Wave EU Series” generators are clean, stable and meet emission and noise norms in India. With over 500 dealers and exports to over 30 countries, Honda is a global engineering standard that is backed by local reliability. If you are looking for a small-sized, portable and low-maintenance generator, HIPP is still a reliable option.
5. Ashok Leyland
Ashok Leyland Ltd. has been a prominent organization in the commercial vehicle business for a long time. In addition to vehicles, Ashok Leyland also provides powerful diesel engines for industrial, marine and generator uses. While they will often depend on partner companies to assemble full DG sets (including their engines along with alternators and control systems), the heart of the engines wear the brand’s name in terms of endurance.
Thanks to certifications such as ISO/TS 16949, and high-end emission and diagnostic technologies (SCR, iEGR, CNG), Ashok Leyland engines are used in gensets across industrial locations for the construction, and infrastructure industries. If you are looking for proven diesel engines, for construction of bigger customized generator systems through OEM Partners, Ashok Leyland is still one of the top engine sources.
6. Greaves Cotton Ltd.
Greaves Cotton Ltd dates back to 1859, which makes it one of the oldest engineering companies in India. Over the years, it has diversified into providing power solutions, manufacturing diesel and petrol gensets, engines for automotive, agriculture, marine and construction and even e-mobility solutions through its subsidiary.
Greaves manufactures gensets between 5 kVA up to 2500 kVA with the focus being industries, hospitals, commercial complexes and agricultural clients. The company emphasis is on sustainability and options based on the fuel, some of their gensets have multi-fuel accepting capabilities. With its “Greaves Genius” line, the company is also combining the smart features such as remote monitoring and fuel management alerts. For those clients who are seeking flexibility, green solutions, and excellent aftermarket support, Greaves delivers admirably.
7. FG Wilson (Caterpillar)
FG Wilson is the world’s genset arm of Caterpillar Inc. In India and other parts of the world, FG Wilson manufactures diesel and gas generating sets from small residential ones (around 6.8 kVA) to large industrial sets (≈2500 kVA). The brand is the culmination of Caterpillar’s heritage of strength, tough testing and worldwide quality standards.
Through its manufacturing and distribution network, FG Wilson supplies sectors such as mining, manufacturing, data centers and large commercial buildings. For customers seeking robust and globally certified power systems with avid after sales support FG Wilson is a go to name.
8. Kohler Power India
Kohler Power India (a subsidiary of global Kohler Power) manufactures generators that can be used for residential, commercial and industrial applications. Their Indian operations have manufacturing plants (in Aurangabad, and Jhagadia, Gujarat) and offices in various other major cities such as Pune, Bangalore and Gurgaon.
Kohler’s gensets are as small as 3.5 kVA or as large as heavy-duty 4200 kVA systems. The product lineup consists of diesel and gas and LP fuel generators with many combinations coming with microprocessor driven controllers, robust build quality and noise optimized enclosures. Their comprehensive dealer and service network make them trustworthy for the customers who need reliable, customizable power solutions all over India and neighbouring countries.
9. Sudhir Power Ltd.
Sudhir Power Ltd. has a unique place among the Indian power-solution providers. Since 1973, the company has specialized in the manufacturing and supplying of silent diesel gensets, transformers, HT/LT panels and rental equipment. Sudhir depends on partnerships with international companies (such as Cummins and Schneider Electric) to offer end-to-end power solutions.
Their diesel gensets range from 7.5kVA to 3350 kVA, which serves data centers, telecom towers, manufacturing plants, hospitals, etc. Sudhir has rental, sales and after-sales support making it a full service partner. For businesses that value end-to-end support, on-site maintenance and flexible rental or purchase options, Sudhir is still one of the best options.
10. Jakson Group
Jakson Group has evolved from a trader of electrical goods (formed in 1947) to one of the most diversified power and energy companies in India. As an OEM partner of Cummins since 1982, Jakson manufactures diesel gensets and acoustic enclosures from plants at Kalsar (Gujarat), Kathua (J&K) and Phaltan.
They manufacture gensets from 7.5 kVA to 3750 kVA, and are aimed at industrial, commercial, residential and infrastructure customers. Beyond Diesel Now Jakson invests in Green Energy Trends Jakson operates a number of solar EPC projects, battery energy storage systems (Bess) and invests in sustainable power solutions. For clients looking for a forward-looking energy partner that combines back-up energy with renewable energy and modern infrastructure, Jakson is an attractive energy partner.
Final Thoughts
Generators are a vital component of keeping the lights on, industries running and services operating. In 2025, India has more options than it’s had ever.
If you are looking for heavy duty power with a worldwide range of reliability then Cummins India or FG Wilson. If you want trusted mid-size options go for Mahindra Powerol, Kirloskar, or Greaves Cotton. For small and portable quiet generators Honda India Power Products and Kohler Power India are the leaders. For complete service or turnkey solutions Sudhir Power and Jakson Group deliver.
By picking any of these top 10 manufacturers of generators, you are aligning yourself with proven quality, service and innovation. When you think of “power backup in India”, think of these leading names.