What configurations of 20 kW generators do you offer?

We offer silent canopied models in both 3 phase and single phase configurations. Our range uses diesel fuel and operates at 50Hz.

What is the typical 20 kW generator price?

Our range typically costs approximately £7,000 to £7,500 excluding VAT. The final 20 kW generator price depends on the exact model, specification, availability, delivery destination and any additional equipment required.

What is 20 kW in kVA?

At a 0.8 power factor, 20 kW is equal to 25 kVA. The relationship is calculated by dividing the kW output by the power factor: 20 ÷ 0.8 = 25 kVA.

How many amps does a 20 kW generator produce?

The approximate 20 kW generator amps are 36A for a 3 phase 400V supply and 86.9A for a single phase 230V supply. Actual output should be confirmed against the manufacturer’s technical data and the requirements of the installation.

What is the typical 20 kW diesel generator fuel consumption?

The exact figure depends on the model, electrical load and operating conditions. As a general guide, 20 kW diesel generator fuel consumption may be around 6 litres per hour at full load.

What are the typical 20 kW generator dimensions?

Dimensions vary between models. As a broad guide, typical 20 kW generator dimensions are approximately 2,100mm long, 1,000mm wide and 1,500mm high. Always check the individual data sheet before planning access or installation.

How much does a 20 kW generator weigh?

The precise 20 kW generator weight depends on its design and fuel tank capacity. A typical unit may weigh approximately 1,000kg dry and 1,050kg wet. Wet weights include operating fluids such as oil and coolant, but not fuel.

What can a 20 kW generator power?

A 20 kW unit may power essential circuits in a home, small business, workshop, farm or construction site. This could include lighting, refrigeration, computers, security systems, pumps and selected machinery. The correct answer depends on running demand, starting currents and which loads need to operate simultaneously, so a professional load assessment is recommended.

20 kW Generators UK | 20kW Diesel Gensets for Sale

Dependable 20 kW Diesel Generators

A 20 kW generator provides a practical balance of output, efficiency and manageable size. It can supply reliable power for commercial premises, construction sites, agricultural operations, workshops and selected residential properties. These units are also suitable for remote locations where access to the mains is limited or unavailable.

Our range is powered by a proven Cummins diesel engine and fitted with a Stamford alternator. Each generator also features a Cummins PowerStart control panel, giving the operator straightforward access to key readings, operating status and protective functions.

Global Generators is an authorised Cummins CPG dealer. This allows us to offer the best UK pricing on genuine Cummins generators, backed by knowledgeable support from a team with more than 50 years of combined generator industry experience.

As a leading stockist, we hold a wide range of generators in our physical inventory. This supports fast delivery across the UK and efficient global export for customers who need dependable equipment without unnecessary delays.

Silent Canopied Generators for Demanding Environments

Every 20 kW silent generator in this category is supplied inside a protective acoustic canopy. The enclosure helps reduce operating noise while shielding important components from weather, dust and accidental contact.

A 20 kW silent diesel generator is well suited to locations where noise needs to be controlled, including workplaces, residential settings, farms and public-facing premises. The canopy also creates a clean, compact package that can be positioned more easily than many open generators.

These silent generators include integrated fuel tanks for convenient operation. Actual running time will depend on the tank capacity, electrical load and operating conditions. For long term use, buyers should consider refuelling arrangements, routine servicing and safe access around the generator.

20 kW 3 Phase Generator Options

A 20 kW 3 phase generator is designed to supply equipment operating across a three phase electrical system. This makes it a strong choice for industrial applications, workshops, agricultural sites and commercial buildings.

Choosing a 20 kW 3 phase diesel generator may be appropriate when the connected load includes motors, pumps, compressors or other substantial electrical equipment. Three phase distribution can deliver power efficiently across several circuits when the installation has been planned and balanced correctly.

For sites that use the term genset, a 20 kW 3 phase genset describes the complete packaged generating set rather than only its engine or alternator. Our 20 kW 3 phase diesel genset options combine the engine, alternator, control system, base frame, fuel system and acoustic canopy in one integrated unit.

You can also compare this output with our wider range of 3 phase generators.

20 kW Single Phase Generator Options

A 20 kW single phase generator provides power for installations that operate at 230V rather than using a three phase supply. This configuration may suit homes, small businesses, offices, workshops and rural properties, subject to a professional assessment of the connected load.

A 20 kW single phase diesel generator can support a substantial selection of lighting, heating controls, refrigeration, communications equipment and other essential circuits. However, the total demand and starting current of each appliance must be considered before choosing a unit.

The phrase 20 kW single phase genset refers to a complete generating system configured for single phase output. A 20 kW single phase diesel genset offers the fuel efficiency, durability and operating characteristics of diesel power in a format suited to 230V installations.

Explore our broader selection of single phase generators if your power requirements fall above or below 20 kW.

Standby and Prime Power Applications

A 20 kW diesel genset can be used as either a standby generator or a prime power source when its rating and installation match the intended duty.

For backup power, the generator can help maintain essential operations during a mains failure. When paired with a correctly specified automatic transfer switch, it can be configured to start automatically and transfer the selected load after an outage. This can help protect refrigeration, security equipment, communications systems, pumps and other critical services.

In prime power applications, a 20 kW genset may provide electricity where a mains connection is unavailable or unsuitable. Prime operation places different demands on the equipment, so buyers should consider expected load, daily running hours, fuel storage and maintenance intervals.

Our specialists can help you compare the available ratings and choose suitable standby generators for your intended application.

Choosing the Right Generator

The stated 20 kW output should not be treated as the only selection criterion. Correct sizing also depends on the normal running load, motor starting currents, future expansion and whether the generator will provide standby or prime power.

Operating a generator continuously at its absolute limit may reduce its ability to handle temporary demand increases. An allowance for starting loads and reasonable future growth can improve performance and provide greater flexibility.

You should also confirm the required voltage and phase. A phase diesel generator must match the electrical system it will supply. A single phase unit cannot simply replace a three phase machine without considering the installation and connected equipment.

All models in this category operate at 50Hz, making them suitable for the UK and many international markets that use the same frequency. Customers exporting equipment should confirm the destination’s voltage, frequency and local installation requirements before ordering. Our complete range of 50Hz generators covers outputs for projects of many different sizes.

Fuel Efficiency, Installation and Maintenance

Fuel consumption varies with the exact model, operating load, site conditions and maintenance standard. Diesel generators generally consume less fuel under lighter loads, although prolonged operation at an excessively low load should be avoided.

Installation should be completed by competent professionals. The chosen location must provide suitable ventilation, exhaust routing, electrical protection, access for servicing and a safe method of refuelling. The generator should also stand on a stable, level base that can support its operating weight.

Regular maintenance supports dependable starting and reliable performance. Checks should cover oil, coolant, filters, batteries, fuel quality and the condition of the control panel. A generator used for emergency backup should also be tested periodically so that faults can be identified before a power cut occurs.

Our experienced generator sales team can discuss availability, specifications and delivery times during the working day. We can also support international buyers with efficient export arrangements for our wider range of diesel generators.

Frequently Asked Questions

Reserve Your 20 kW Generator

Contact our experts today for more information about our range of 20 kW generators or to reserve your generator. Speak to us by phone, send a WhatsApp message, email our team or complete the , and we will help you choose the right model for your application.