The right generator keeps power tools running on jobsites, campsites, and during outages. This guide compares top petrol and portable power options suitable for powering drills, saws, grinders, and other tools in the United Kingdom. We highlight practical performance, noise, and portability to help you choose a model that fits demanding workdays and off-grid projects alike.
Summary of featured products
| Product | Type | Output (W/kVA) | Key Benefit | Image |
|---|---|---|---|---|
| JCB 3.6kW / 4.5kVA Petrol Site Generator | petrol inverter | 3600W / 4.5kVA | High power for heavy-duty tools, robust build |  |
| Excel Power Open Frame 5kW Petrol | petrol | 5000W / 5kW | Electric start, strong output for workshops |  |
| HYUNDAI 2.2kW Petrol Inverter | petrol inverter | 2200W / 2.2kW | Quiet operation; good for sensitive tools |  |
| AIVOLT 1200W Petrol Inverter | petrol inverter | 1200W | Lightweight, low noise; USB and DC outputs |  |
| MARBERO Portable Power Station 26,400mAh (98Wh) | portable power station | 98Wh / 150W peak | Compact backup for small tools and charging |  |
JCB Site Power 3.6kW Generator
Providing 3.6kW of continuous output, the JCB 3.6kW / 4.5kVA petrol site generator is designed for heavy-duty trades on UK worksites. Its robust engine delivers reliable power for circular saws, breakers, and mixer drills. With a recoil start and a market-leading air-cooled design, it is suited to environments where durable construction and steady performance matter. This model supports regular tool loads with a strong peak capacity and a 7.5hp engine branding, making it a popular choice for builders and site professionals seeking dependable AC power in portable form.
Excel Power 5kW Petrol Generator
Excel Power offers a 5kW petrol generator with electric and recoil start. Its AVR-controlled copper windings help maintain a stable power output, making it suitable for power tools that demand consistent voltage. The heavy-duty build supports active workshop use and outdoor job sites where mains power is unavailable. The model is designed for straightforward operation, quick starting, and reliable performance across a range of loads, from heavy carpentry tools to lighting setups during site outages.
HYUNDAI 2.2kW Petrol Inverter
Hyundai’s 2.2kW petrol inverter focuses on clean sine-wave output for sensitive equipment and work tools. The inverter design reduces noise to about 61dB at 7 metres, which is advantageous on site where quiet operation is valued. An integrated ECO mode optimises fuel economy by matching engine speed to load, supporting longer runtimes between refuels. This model is well-suited for smaller tool sets, on-site electrical tasks, and tasks requiring minimal electrical noise.
AIVOLT 1.2kW Inverter Generator
AIVOLT’s 1.2kW petrol inverter emphasizes portability and quiet operation for on-the-go power. The generator features a multifunction control panel with parallel connectivity, a standard 230V outlet, USB ports, and a 12V DC outlet. Its compact form and copper windings deliver stable power for portable tools, smartphones, cameras, and radios. This model is ideal for site tasks where mobility and low noise are priorities, such as indoor renovations or remote job sites.
MARBERO 98Wh Portable Power Station
MARBERO’s 98Wh portable power station offers 100W continuous power with a 150W peak capability, plus a 220V AC outlet. Its compact design (about the size of a DSLR) and light weight make it suitable for powering small tools such as handheld drills, radios, LED work lights, and chargers on-site or during a camping trip. The unit provides multiple outputs, including USB ports and DC ports, enabling rapid charging for phones, tablets, and other essential devices. It serves as a versatile backup power source when heavy machinery isn’t required.
Buying Guide: Key Purchase Considerations
- Power output versus tool demand: Choose a generator with continuous wattage that comfortably exceeds the combined running watts of your essential tools. For heavy-usage tasks, aim for 3–5 kW class petrol generators; for lighter setups, sub-2 kW models or portable power stations may suffice.
- Fuel type and runtime: Petrol/inverter options provide flexibility and portability, while larger site gensets rely on fuel efficiency and longer runtimes. Consider auto-idle/ECO modes to conserve fuel on variable loads.
- Wave quality: For sensitive tools and electronics, select a true sine wave or clean inverter generator to avoid voltage spikes that could harm equipment.
- Portability and weight: On-site mobility matters. Look at traction, handles, wheels, and overall weight when transporting to and from a site or vehicle.
- Noise levels: In urban UK environments or indoor works, quieter models reduce disturbance to neighbours and workers. Inverter models typically deliver lower noise levels.
- Outlets and compatibility: Ensure the unit provides the needed AC and DC outlets, plus USB ports for charging accessories and devices. Parallel-connect options can boost total available power when you need more.
- Durability and warranty: For repeated use in harsh environments, choose models with robust housings, vibration resistance, and comprehensive warranties to protect your investment.
- Compliance and safety: Verify UK-approved fuels, regulatory marks, and safe operating practices, especially when running through a long workday or in enclosed spaces.
When selecting a generator for power tools, balance peak power, runtime, portability, and noise. For larger trades or construction sites, higher-wattage petrol generators deliver sustained performance. For light tool kits, micro power stations and inverter units provide clean, portable power with minimal noise. The models presented here cover a range of needs, from on-site workshop power to off-grid tool charging, allowing you to match your gear to your working environment.