The 10 Best Offers for Diesel Generators - June 2025
Last updated: 15. June 2025
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1
Best Choice
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
WARRIOR ECO POWER EQUIPMENT
- Powerful Diesel Engine: The Warrior generator features a robust 954cc engine that is 3 Phase Ready, delivering powerful performance to handle a wide range of applications.
- High Power Output: With a maximum of 12.5 kVa and 11000 maximum watts, and 10000 running watts, this generator provides consistent and reliable power for your needs.
- Extended Run Time: The 60-litre tank can easily achieve up to 24 hours of running time at around 50% load, ensuring continuous and reliable power for longer durations.
- Enhanced Safety Features: Equipped with a low oil shut-off sensor and with a 3L oil capacity, this generator prioritizes safety and maintenance to ensure optimal performance.
- Versatile Outlets: Featuring multiple outlets including 1 x 32A 415v / 2 x 16A 240v outlets, this generator offers versatility to power a variety of equipment for different applications.
| Colour | Manufacturer | Weight |
| Black | Warrior Power Equipment | - |
£4,19999
2
Best Value
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
maXpeedingrods
Save £113.00 Today!
£549.99
(21% OFF!)
Free Delivery**
- 【Multifunction Power Supplier】 Quiet and fuel efficient 4 stroke 145cc petrol generator produces 3300W max watts and 3000W running watts. It is easily able to run the lighting system, RV or a small family home. And run a huge range of high-power appliances such as an air conditioner with 6000 BTU cooling capacity, refrigerators, kettles, and even more appliances at the same time.
- 【Low noise】When the generator is in ECO mode at 25% load and is 7m away from the generator, the noise level is 58 decibels. which is almost the quietest generator of this rated power. At this noise level, there is little disturbance for users and people nearby. Please note that ambient noise may affect the overall value of the noise of the machine.
- 【Extra Long Runtime】Runs 8.3 hours at 25% load (750w load) 、4.5 hours at 50% load (1500w load). In ECO mode, the runtime can be extended up to 10-12 hours. Guaranteed power supply overnight.
- 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
- [Brand Warranty] Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
| Colour | Manufacturer | Weight |
| Orange,black | maXpeedingrods | 21 kg |
£43699
RRP: £549.99
-21%
3
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Hyundai
- Long-Run Backup Power—This model features a 25L fuel tank that can provide up to 30 hours of runtime at 1L/hour, ideal for extended power outages and workshop backup.
- Reliable Hyundai Diesel Engine – Powered by the D452 4-stroke, air-cooled engine with 5.8kW max output, perfect for keeping essential appliances and tools running.
- ATS & Electric Start Ready – Compatible with ATS (sold separately) for automatic startup during outages. A key-operated electric start ensures quick manual control.
- Produces a Quiet Operation—It is housed in a silenced enclosure, with noise levels as low as 70dB @ 7m, making it suitable for residential or business environments.
- Economical & Durable – Runs on red diesel for cost savings and includes a 1-year / 1,000-hour Hyundai warranty with full UK parts backup.
| Colour | Manufacturer | Weight |
| White and Black | Hyundai | - |
£1,49999
4
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
AIVOLT
Save £30.00 Today!
£269.99
(11% OFF!)
Free Delivery**
- Unique Feature and Multifunction Control Panel - The outstanding design features bright orange appearance and a multifunctional panel including parallel connectability, a standard 230v 3 pin socket, 2 USB charging ports(type-A & type-C), a 12v DC charging outlet. Suitable for TVs, computers, small electric tools and many kitchen appliances.
- Ultra Lightweight and Low Noise - Only weighs 12kg, and nearly 15% lighter than other same power compact generators. The labor-saving and ergonomic handle is very easy for a young woman to lift. When the generator is at 25% load, it comes with 58 decibels noise at 23 feet that is comparable to the sound of a normal conversation.
- Pure Sine Wave Power - This inverter generator has a powerful 60cc 4 stroke OHV air-cooled 100% copper winding engine which can produce 1.2kw starting watts and 1.1kw continuous watts steady clean power with very low fuel consumption. Ideal for sensitive electronics such as phones, laptops.
- Eco Mode & Long Runtime - A fully fueled 2.5L tank will provide you consistent power for up to 10 hours making the generator extremely economical. It runs 8 hours at 25%, 5.5 hours at 50% load, 4 hours at 75% load, 3.1hours at 100% load. In Eco-mode, it even runs more than 10 hours and prolongs generator’s life. Perfect for RV travel, jobsites and home use.
- The package contains: 1*1200W petrol generator, 1*spark plug wrench, 1*oil funnel, 1*12V DC battery charging cable, 1* screw driver, 1* quick start guide, 1*British plug, 1*manual.
| Colour | Manufacturer | Weight |
| Orange | AIVOLT | 12 kg |
£23999
Was: £269.99
-11%
5
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
K&S Könner&Söhnen
- The diesel generator is equipped with a vandal-proof housing with better heat distribution inside, which ensures a longer service life of the device.
- Unique innovative VTS phase switching system allows the generator to be used either in three-phase (400V) or single-phase mode (230V) almost without loss of power.
- The diesel generator can be operated with an external ATS unit. It is equipped with a 6-pin connector socket that allows the generator to automatically turn on and off and maintain battery charge status in standby mode.
- The air pre-heater ensures an effortless start of the diesel power generator in the cold season.
- Ergonomic control panel of the generator allows easy operation of the diesel generator including the LED display (voltage, frequency, operating hour), overload and short circuit protection, low oil indicator, sockets, earth screw, 12 V terminals, etc.
- The & S company motor meets European quality standards, including the new exhaust standard Euro 5, and is equipped with an individual serial number with which we can monitor the production and service quality.
| Colour | Manufacturer | Weight |
| 9300de-1/3 Atsr | K&S Könner&Söhnen | 180 kg |
£1,59900
6
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
maXpeedingrods
Free Delivery**
- 【Multifunction Power Supplier】4-stroke petrol generator produces 3500W max watts and 3200W running watts. It is easily able to keep the lighting system or a small family house, power air conditioners and many other small appliances such as refrigerators,coffee machine at the same time.
- 【Provide Clean Power】This inverter technology provides more steady power, produces clean power to safely operate and prevent damage to sensitive electronics such as phones, tablets, televisions and computers.
- 【Multi-Function Display】Easy to monitor voltage and frequency power; display remaining fuel, which is suitable for timely fuel change; display cumulative runtime, which is suitable for later generator maintenance; display unique runtime, perfect timer function.
- 【Lightweight and Powerful Motor】Only 26 kg, small and compact, easy to carry, 223 cc OHV motor with two 230 V ports and a 12 V DC connector, provides plenty of power for multiple tasks.
- 【Brand Warranty】 Maxpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period"), and free lifetime technical support and customer service.
| Colour | Manufacturer | Weight |
| Orange/Black | maXpeedingrods | 26 kg |
£33999
7
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
AIVOLT
Save £79.94 Today!
£379.93
(21% OFF!)
Free Delivery**
- Pure Sine Wave Power - AIVOLT portable generator has a powerful 80cc 4 stroke OHV air-cooled 100% copper winding engine which can produce 1800 maximum watts and 1700W continuous watts steady clean power (less than 3% THD) with very low fuel consumption. Ideal for sensitive electronics such as phones, laptops and many large outdoor garden appliances.
- Eco Mode & Long Runtime - A fully fueled 3L tank will provide you consistent power for up to 8 hours making the generator extremely economical. It runs 7 hours at 25% load (450W), 5 hours at 50% load（900W）, 3.4 hours at 75% load（1350W）, 3 hours at 100% load. In Eco-mode, it even runs more time and prolongs generator’s life. Perfect for RV camping, construction, jobsites and power failures.
- Unique Feature and Multifunction Control Panel - The outstanding design features bright orange appearance and a multifunctional panel including parallel outlets, a standard 230v 3 pin socket, 2 USB charging ports(type-A & type-C), a 12v DC charging outlet. It's convenient to double or even triple your power by using the parallel kit to connect to another AIVOLT inverter generator (including 1.2KW, 1.8KW, 3.3KW).
- Ultra Lightweight and Low Noise - Weighing in at only 15kg, and nearly 15% lighter than other same power compact generators. The labor-saving and ergonomic handle is very easy to lift. When the generator is at 25% load, it comes with 59 decibels noise at 23 feet that is comparable to the sound of a normal conversation.
- The package contains: 1*1800W petrol generator, 1*spark plug wrench, 1*oil funnel, 1*12V DC battery charging cable, 1* screw driver, 1* quick start guide, 1*manual.
| Colour | Manufacturer | Weight |
| Orange | AIVOLT | 15 kg |
£29999
RRP: £379.93
-21%
8
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Excel Power
- Starting Watts – 3200W / Rated Watts – 3000W
- Recoil Start with low oil level protection
- Inverter Generator – (pure sine wave power)
- Durable X Configuration Steel Tubular Frame
- 11L fuel tank
- 1 x 13A 240V UK 3-pin sockets
- Covered by a 2 Year Warranty
| Colour | Manufacturer | Weight |
| Red/Black | Excel Power Generators | 29 kg |
£29999
9
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Champion Power Equipment
Free Delivery**
- Superior power & features - Our Champion Power Equipment 92001i Range of Invertor Generators offer both superior power and outstanding performance. These Inverters are offered in multiple fuel types, are Super-Lightweight and are packed with many great features including True Sine Wave Technology, EZ Start, LED Indicators, , Parallel Connectability, Multiple Outlets and USB Charging
- Super lightweight & ultra quiet operation - Weighing in at only 17.6Kg, and only 44 x 28.5 x 44.5cm in size, the Mighty Atom is the World's lightest 2kW Inverter Generator meaning that it is both extremely lightweight and portable. The device is also extremely quiet during operation at only 58 dBA.
- Reliable champion 2200w petrol engine - The Invertor Generator has an EZ Start and comes with a 2200 Maximum Watt (1900 Running Watts) 79cc Petrol Engine that will run up to 10.5 hours on a 4.0 Litres full tank (at 25% load). There is also a handy LED Indicator and Economy Mode to save on fuel as well as an Automatic Oil Shut Off Sensor and 500ml Oil Capacity.
- True sine wave invertor technology - This technology makes this generator ideal for sensitive electronics such as computers, laptops and TV. Perfect for your next camping trip or powering small household items like fridges/freezers, power tools, lighting units & garden equipment. This inverter has parallel capability allowing you to pair up with other Champion Inverters using an optional Parallel Kit.
- Includes power outlets & usb adapter - Included with the device are 2 covered 240V 13A Power Outlets and a handy 12v DC USB Adapter you can use to power your phone, laptop, tablet, or similar device. The Parallel Kit (Sold Separately) allows you to pair this up to another Champion inverter for double the power.
| Colour | Manufacturer | Weight |
| Yellow,black | Champion Power Equipment | 17.6 kg |
£39999
10
Our rankings are created by artificial intelligence (AI) from the algorithmic analysis of hundreds of thousands of customer reviews on products, brands, the level of service of the retailers, as well as popularity trends and much more. The ranking reflects our opinion and should be a good starting point for your purchase.
Excel Power
- Starting Watts – 2300W / Rated Watts – 2000W
- Recoil Start with low oil level protection
- AVR Controlled
- Large 15L fuel tank
- 2 x 13A 240V UK 3-pin sockets
- Covered by a 2 Year Warranty
| Colour | Manufacturer | Weight |
| Red/Black | Excel Power Generators | 36 kg |
£19999
General information about Diesel Generators:
Understanding Diesel Generators: A Comprehensive Overview
Introduction to Diesel Generators
Diesel generators play a crucial role in powering various industries, homes, and establishments worldwide. They are reliable and efficient sources of electrical energy, especially in areas without access to a stable electricity grid. These generators employ diesel fuel combustion to generate electrical power, making them ideal for both backup and primary power supply.
Overview of Diesel Generators
Diesel generators consist of three primary components: an engine, an alternator, and a control panel. The engine is responsible for converting the potential energy stored in diesel fuel into mechanical energy. This energy is then used to power the alternator, which converts it into electrical energy. The control panel manages the entire operation of the generator, including starting, stopping, and regulating the power output.
Advantages of Diesel Generators
Diesel generators provide numerous advantages, making them a popular choice for power generation. Firstly, they offer high energy density, meaning they produce a considerable amount of electrical energy per unit of diesel fuel. This makes them particularly efficient, cost-effective, and suitable for extended periods of use. Furthermore, diesel fuel is more readily available and easily accessible compared to other fuel types, ensuring a constant fuel supply for the generator.
Moreover, diesel generators are renowned for their durability and reliability. The combustion process within the generator is not subject to spark plugs or ignition systems, reducing the risk of malfunctions. These generators are also designed to handle heavy loads without overheating, making them suitable for a wide range of applications. Lastly, their low maintenance requirements and longer lifespan contribute to their appeal and economic viability.
Applications of Diesel Generators
Diesel generators find extensive use in various sectors and situations where a stable power supply is essential. Industries, such as manufacturing, construction, and mining, frequently rely on diesel generators to meet their power requirements. These generators are also utilized in residential areas, commercial buildings, and hospitals, providing backup power during outages or serving as the primary power source in remote locations.
Conclusion
In summary, diesel generators are highly efficient, durable, and versatile power sources widely used across industries and locations. Their ability to provide a steady supply of electrical energy, regardless of the availability of an electricity grid, makes them indispensable for numerous applications. With their long lifespan and relatively low maintenance needs, diesel generators have proven to be a reliable and cost-effective solution for meeting various power demands.
* the possibly used term "best" etc. refers only to our possibly subjective personal opinion.
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Other IMPORTANT INFORMATION that we ask you to take note of:
We may receive a commission if you make a purchase via the links on our site. This has no impact on the placement of the products on our site. Our website is part of amazon associates program - Amazon, Amazon Prime, the Amazon Logo and Amazon Prime Logo are registered trademarks of Amazon, Inc. or its affiliates.
Disclaimer:
1. The prices shown may have risen since the time we last updated them.
2. The actual price of the product on the seller’s site at the time of purchase will govern the sale.
3. It is not technically possible for the prices displayed above to be updated in real-time.
** "Free Delivery" means that this is possible under the given conditions at the time of data retrieval from the relevant provider, but cannot be guaranteed. It is technically not possible to provide information in real-time. The shipping costs may vary under certain circumstances (different provider, place of delivery, etc.). The shipping costs shown in the further ordering process apply.
Other IMPORTANT INFORMATION that we ask you to take note of:
We may receive a commission if you make a purchase via the links on our site. This has no impact on the placement of the products on our site. Our website is part of amazon associates program - Amazon, Amazon Prime, the Amazon Logo and Amazon Prime Logo are registered trademarks of Amazon, Inc. or its affiliates.
Disclaimer:
1. The prices shown may have risen since the time we last updated them.
2. The actual price of the product on the seller’s site at the time of purchase will govern the sale.
3. It is not technically possible for the prices displayed above to be updated in real-time.