Diesel generators offer unmatched reliability under heavy, continuous loads. Built with robust industrial parts and heavy frames, they handle harsh environments and survive long operating hours. As power goes out frequently, diesel generators can be strong alternatives.

A diesel generator keeps critical systems running when the main power supply fails. But choosing the right generator starts with choosing the right supplier.

The purchase price is only one part of the decision. Your generator must match the required load, operating conditions, expected runtime, and intended application. The supplier should also be able to provide genuine equipment, professional installation and commissioning, reliable spare parts, warranty coverage, and ongoing maintenance support.

To make your choice easier, this guide highlights 10 established diesel generator suppliers in Bangladesh and explains what to consider before investing in a generator for your power requirements. Let’s dive in.

Top 10 Diesel Generator Supplier in Bangladesh in 2026

Several established companies supply diesel generator sets in Bangladesh, including small standby units and large industrial power-generation systems. The top ones are leading companies that have successfully supplied diesel generators over the years.

The top 10 diesel generator suppliers right now are:

1. Metro Power Technology

With more than 15 years in the industry, Metro Power Technology stands out as a leading diesel generator supplier in Bangladesh. The company supplies generator sets from well-known brands, including Perkins, Cummins, Lovol, and Ricardo.

These generators serve commercial, industrial, and other power-generation requirements. Its range covers different generator capacities and configurations to suit varying load demands and operating conditions.

Beyond generator supply, Metro Power Technology provides installation, testing, commissioning, maintenance, spare parts, and emergency support services. This allows customers to get both the equipment and the technical assistance required for reliable generator operation. The company also operates as an importer and supplier of other power and electrical equipment.

2. Energypac Power Generation PLC

Energypac Power Generation PLC has long-standing experience in Bangladesh’s power-generation sector and supplies diesel generator sets for commercial and industrial applications.

Its generator range includes GLAD, FG Wilson, and GUASCOR Energy. Its Perkins business covers genuine Perkins engines, spare parts, and services. The company provides generator installation, preventive and corrective maintenance, overhauling, alternator repair, troubleshooting, etc.

3. Rahimafrooz Energy Services Ltd.

Rahimafrooz Energy Services Ltd. supplies diesel generators from Ferbo Energy, Italy, and Mitsubishi Heavy Industries, Japan.

Its published range covers approximately 15 kVA to 3,050 kVA for Ferbo and 650 kVA to 18,750 kVA for Mitsubishi. Rahimafrooz provides generator installation, engineering solutions, spare parts, routine maintenance, emergency support, overhauling, annual maintenance contracts, rental power, and customized project solutions.

It also works on wider power infrastructure, including substations, switchgear, transformers, and UPS systems.

4. ACI Motors Limited

ACI Motors Limited supplies power-generation equipment as part of its broader machinery and engineering business in Bangladesh.

Its generator range includes brands such as Himoinsa, YorPower, and Weichai. These brands cover different generator capacities and applications, including commercial backup power and larger industrial requirements.

Alongside generator sales, ACI Motors provides after-sales support and spare-parts services. For a specific project, buyers should confirm the available model, kVA rating, engine configuration, alternator, warranty, and current service coverage before ordering.

5. SH Service

SH Service supplies generators and power products in Bangladesh, including both portable and diesel generators.

The company lists brands such as Perkins, Cummins, Honda, KOSHIN, Robin, and Grace among its power products. Its work focuses on generator sales and nationwide product delivery, including online purchasing and customer support.

6. Sakura Power Limited

Sakura Power Limited supplies diesel generators and provides installation and after-sales support. It is the exclusive agent for Hyundai Power Products in Bangladesh. Its diesel-generator range includes Hyundai models from approximately 23 kVA to 110 kVA, including silent and super-silent configurations.

The company also sells Sakura-branded power products and handles product delivery, professional installation, testing, and after-sales service.

7. Smart Power and Technology

Smart Power and Technology Ltd. provides generator engineering and power-system services in Bangladesh. Its generator range includes diesel standby and prime-power generators for commercial and industrial loads.

It offers generator sales and installation, reconditioned generator supply, automatic transfer switch (ATS) sales and installation, engine overhauling, alternator coil repair, and monthly servicing. It also sources generator consumables, filters, batteries, charging-system parts, and ATS components.

8. Energy & Power Solution Bangladesh

Energy & Power Solution Bangladesh supplies diesel generators and provides related power-system services for commercial and industrial customers.

It provides generator supply, installation, rental, maintenance, and technical support. Depending on the project, customers can request generator systems configured for standby or continuous power applications.

9. Run Power Engineering Ltd.

Run Power Engineering Ltd. operates in Bangladesh’s power and electrical engineering sector and supplies diesel generators alongside other electrical equipment.

Its work extends beyond generator supply into wider power-system requirements. This may include equipment and engineering support for installations where the generator needs to integrate with existing electrical infrastructure.

10. Perkins Generator BD

Perkins Generator BD supplies diesel generators along with generator spare parts, servicing, maintenance, and rental solutions.

Its listed generator options include engines from brands such as Perkins, Cummins, Ricardo, Volvo, and John Deere. The company caters to different commercial and industrial power requirements. Its services include generator installation, troubleshooting, maintenance, spare-parts support, and rental generators.

How to Choose the Best Diesel Generator?

Choosing the right diesel generator starts with understanding your power requirements. The generator should match your electrical load, operating conditions, and intended use.

Here’s how you can pick the best one:

✔ Calculate Your Power Load

Start by calculating the total running load in kW or kVA. Do not size the generator based only on the largest appliance or machine.

Motors, pumps, compressors, lifts, and other inductive loads can require much more power when starting. This starting demand should be considered when selecting the generator size.

✔ Understand kW and kVA

Generator capacity is commonly rated in kVA. At a typical power factor of 0.8, a 100 kVA three-phase generator can provide around 80 kW of real power. Make sure the generator’s rated capacity is suitable for both your normal running load and starting requirements.

✔ Choose the Right Power Rating

Decide whether you need the generator for standby or prime power. A standby generator is mainly used as an emergency backup during power outages. A prime-rated generator is designed for longer operating periods and variable loads.

✔ Check the Engine and Alternator

The engine and alternator are key components of a diesel generator. Check their manufacturers and specifications before making a decision. Also consider the controller, voltage, frequency, phase, and rated output. A generator should not be selected based only on its brand name.

✔ Check Voltage and Frequency

For Bangladesh, generators normally operate at 50 Hz. Most commercial and industrial applications use three-phase power. Smaller applications may use single-phase generators, depending on the electrical system and connected equipment.

✔ Consider Starting Power

A generator may have enough capacity for the normal running load but still struggle to start a large motor. Check the starting current of motors, pumps, compressors, and other equipment. The generator should also have a suitable transient voltage response to handle sudden load changes.

✔ Check ATS Compatibility

If the generator needs to start automatically during a power failure, check whether it is compatible with an Automatic Transfer Switch (ATS). An ATS can automatically transfer the electrical load from the utility supply to the generator when the main power fails.

✔ Consider Site Conditions

The installation environment can affect generator performance. High ambient temperatures, poor ventilation, restricted radiator airflow, and high altitude can reduce available engine output. Ask the supplier to confirm whether the generator requires derating for your specific installation site.

✔ Check Fuel Consumption

Fuel consumption is an important part of the overall operating cost. A generator with a lower purchase price may cost more over time if it uses more fuel. Compare fuel consumption at different load levels rather than looking only at the initial purchase price.

✔ Consider Maintenance and Spare Parts

Finally, check the availability of servicing and spare parts. Easy access to filters, engine parts, batteries, and other replacement components can make maintenance simpler.

Choose a generator that offers suitable performance, reasonable operating costs, and reliable after-sales support for your application.

What Makes a Diesel Generator Supplier Stand Out?

A reliable diesel generator supplier should provide more than just the generator. Product quality, clear specifications, after-sales service, and technical support are all important.

Consider the following checklist when choosing your diesel generator:

☑ Check the Generator Source

First, confirm whether the generator is factory-new, used, reconditioned, or locally assembled. The quotation should clearly state the engine, alternator, controller, model number, rated output, voltage, frequency, and operating rating.

☑ Review the Warranty

The warranty terms should be clearly stated in writing. Check the warranty period, covered components, exclusions, and whether labor and replacement parts are included.

☑ Look at After-Sales Service

Diesel generators need regular maintenance to operate reliably. This can include engine oil and filter replacement, coolant checks, battery inspection, belt checks, and other scheduled servicing. Look for a supplier with dependable technical support who can help reduce downtime when maintenance or repairs are required.

☑ Check Installation and Commissioning

For larger installations, check whether the supplier provides installation and commissioning services. These may include exhaust installation, fuel connections, electrical cabling, earthing, control-panel connections, load testing, and ATS integration. Also, the installation should comply with the BNBC guidelines.

☑ Consider an AMC

An Annual Maintenance Contract (AMC) can be useful for businesses that rely heavily on backup power. The agreement should clearly state service intervals, response times, included labor or parts, and emergency support.

☑ Check Spare Parts Availability

Spare-parts availability is another important factor. Filters, sensors, controllers, injectors, and engine components may need replacement during the generator’s service life. Long waiting times for critical parts can increase downtime, so check how easily genuine parts can be sourced.

☑ Verify the Manufacturing Origin

For imported generators, confirm the country of origin and manufacturing location of the engine, alternator, and complete genset. The engine brand and generator-set brand may be different. Understanding where each major component comes from helps you assess the equipment more accurately.

Bottom Line

Choosing the right diesel generator supplier isn’t rocket science. Compare the generator’s kVA and kW ratings, standby or prime rating, engine, alternator, controller, and fuel consumption. Also, check warranty, spare-parts availability, and after-sales support.

For a small business, a standard backup generator may be sufficient. A factory, hospital, data center, commercial building, or other critical facility may require a more detailed assessment involving load calculations, automatic transfer, synchronization, protection systems, and planned maintenance.

Before making the final purchase, obtain at least two or three detailed quotations and make sure you are comparing equivalent specifications.

Frequently Asked Questions About Diesel Generator Suppliers

Which company is the most reputable diesel generator supplier in Bangladesh?

There is no single supplier that is suitable for every project. However, the most reliable generator companies are Metro Power Technology, ACI Motors, Energypac, etc.

What brands do local suppliers typically import and stock?

Top Diesel generator brands available in Bangladesh are Perkins, Cummins, Mitsubishi, Himoinsa, YorPower, Ricardo, Lovol, etc.

Do Bangladeshi suppliers offer genuine warranty and after-sales service?

Yes, established suppliers like Metro Power Technology, ACI Motors, etc offer warranties and after-sales support you can rely on.

Do suppliers provide installation, commissioning, and AMC services?

Yes. Many generator suppliers in Bangladesh offer installation, commissioning, maintenance, repair, and annual maintenance contracts.

What documentation should I verify before buying?

Check the quotation, technical datasheet, model and serial numbers, engine and alternator details, warranty, and country of origin. For larger projects, also verify test documents, electrical requirements, protection, ATS or synchronization, and commissioning procedures.

Can I get a customized generator from local suppliers?

Yes. Many suppliers can provide a customized canopy, fuel tank, control panel, ATS, synchronization panel, exhaust, alternator, and output voltage.