Key Takeaways
- Best value overall: maXpeedingrods 3500W at £215.99, with 255+ verified reviews and 3500W peak output
- Best budget option: Excel Power XL2200E at £199.00, a solid 2000W-rated unit with a generous 15L tank
- Best mid-range inverter: Aceup Energy 3400W at £435.99, pure sine wave with quiet operation
- Best UK-brand quiet runner: Hyundai 2200W at £441.99, electric start, 3-year warranty and genuinely quiet
- Best for larger homes: Hyundai 3200W at £599.99, 3.2kW with electric start for heavy-duty backup
How They Compare
Here's a side-by-side look at the five generators we assessed. All prices are current Amazon UK prices at the time of writing.
| Generator | Peak Output | Price | Rating | Best For |
|---|---|---|---|---|
| maXpeedingrods 3500W | 3500W | £215.99 | 5.0 (255) | Best value |
| Excel Power XL2200E | 2300W | £199.00 | 4.5 (40) | Budget |
| Aceup Energy 3400W | 3400W | £435.99 | 4.5 (46) | Mid-range |
| Hyundai 2200W | 2200W | £441.99 | 5.0 (20) | Quiet runner |
| Hyundai 3200W | 3200W | £599.99 | 4.6 (14) | Heavy-duty |
maXpeedingrods 3500W Petrol Inverter Generator
At just over £200, the maXpeedingrods 3500W is hard to ignore. It packs a 223cc 4-stroke engine into a portable frame and delivers 3500W peak output with pure sine wave power, which means it's safe for charging laptops and running sensitive electronics.
The 255+ Amazon reviews give it a perfect 5-star rating, which is unusual at this price point. Reviewers consistently mention that it starts first pull, runs quietly compared to cheaper conventional generators, and handles the basics well. The pure sine wave output is a genuine advantage over budget conventional generators that can damage electronics.
For UK makers who want a reliable backup without spending a fortune, this is the starting point. It's not the quietest or most feature-rich, but at this price, the value proposition is striking.
- Excellent value at £215.99
- Pure sine wave output
- 255+ verified 5-star reviews
- Easy recoil start
- No electric start
- Heavier than premium options
- Limited UK warranty support
Excel Power XL2200E Portable Petrol Generator
The XL2200E from Excel Power is the cheapest generator in this roundup, and it earns its place by doing the basics well. With 2300W peak and 2000W rated output, automatic voltage regulation (AVR) and a 15-litre fuel tank, it's set up for longer runtimes than most budget units.
The digital display is a nice touch at this price, showing voltage, frequency and runtime. The 15L tank means it can run for extended periods without refuelling, which is useful if you're powering a flood pump or keeping a freezer going overnight.
It uses conventional generator technology rather than inverter tech, so the power output isn't as clean. For lights, pumps and power tools, that's fine. For your laptop or phone charger, you'd want to add a surge protector.
- Lowest price in the group
- 15L tank for extended runtime
- Digital display included
- 3-year warranty
- Conventional (not inverter) tech
- Less safe for sensitive electronics
- Heavier at 45kg+
Aceup Energy 3400W Petrol Inverter Generator
The Aceup Energy sits right in the middle of the price range and offers 3400W peak output with inverter technology. That means pure sine wave power, quieter operation and better fuel efficiency than conventional units at a similar wattage.
At 3400W peak, it handles most UK household essentials during a power cut. You can run a fridge, freezer, several lights and charge devices simultaneously without worrying about overloading. The inverter design also means it won't damage your electronics.
Reviewers note the quiet operation, which matters if you're running it overnight during a storm. It's also portable enough for camping, which adds versatility if you're the type who takes the workshop outdoors.
- Pure sine wave inverter output
- Strong 3400W peak capacity
- Quiet operation
- Good fuel efficiency
- Higher price than budget options
- No UK-based warranty centre
- Recoil start only
Hyundai 2200W Petrol Inverter Generator
Hyundai is a name UK buyers trust, and this 2200W inverter generator backs that up. Electric start, pure sine wave output, genuinely quiet running and a 3-year warranty with UK support make it the premium pick for makers who want peace of mind.
The electric start is a real quality-of-life improvement. During a storm, fumbling with a recoil pull cord in the rain isn't fun. Press a button, generator starts. It runs at around 58 dB at 7 metres, which is roughly normal conversation volume, so overnight use is tolerable.
The 2200W output is lower than some competitors, but it handles essentials well. If you're running a fridge, phone charger, a few LED lights and a laptop, you'll be fine. For high-draw items like electric kettles or space heaters, you'd want to step up to the 3200W model.
- Electric start
- Genuinely quiet (58 dB)
- UK-based 3-year warranty
- Pure sine wave output
- Lower output than competitors
- Premium price for the wattage
- Only 20 reviews so far
Hyundai 3200W Petrol Inverter Generator
The Hyundai 3200W is the top-end option here, and it earns the price tag. With 3.2kW of continuous output, electric start, pure sine wave power and the same 3-year UK warranty as its smaller sibling, it covers almost everything a UK household needs during a power cut.
At 3200W, you can run a fridge-freezer, multiple lights, charge several devices and still have headroom for a small heater or power tool. For makers with a workshop that needs to stay operational during bad weather, this is the unit to consider.
The quiet running mode keeps noise down despite the larger engine, and the build quality reflects the Hyundai name. The main drawback is the price, at nearly three times the cost of the maXpeedingrods. But you're paying for UK warranty support, electric start and a larger fuel tank.
- 3.2kW continuous output
- Electric start
- UK warranty and support
- Quiet despite high output
- Most expensive at £599.99
- Only 14 reviews so far
- Heavier than lower-output options
How to Choose a Portable Generator for Storm Season
Picking the right generator comes down to four things: how much power you need, how quiet you need it to run, how long you need it to last on a tank, and whether you want inverter technology for sensitive electronics.
Output (Watts)
Start by listing what you'd run during a power cut. A fridge uses about 150-200W. LED lights are 10-15W each. A phone charger pulls 20W. A laptop charger is 50-65W. A kettle is 2000-3000W, so most portable generators won't run one. Add up your essentials and pick a generator rated for at least that output. For most UK households, 2000-2500W covers the basics; 3000W+ gives you breathing room.
Inverter vs Conventional
Inverter generators produce clean, stable power (pure sine wave) that's safe for electronics. They're quieter, lighter and more fuel-efficient. Conventional generators are cheaper per watt but louder and produce less stable power. For storm-season backup where you'll be charging devices, inverter is worth the premium.
Noise Level
If you're running the generator overnight or in a residential area, noise matters. Inverter generators typically run at 55-65 dB, roughly conversation volume. Conventional generators hit 70-80 dB, which is more like a lawn mower. The difference is significant when you're trying to sleep during a power cut.
Fuel Tank and Runtime
Most portable generators run 6-10 hours on a full tank at 50% load. A larger tank means less refuelling, which matters during overnight storms. The Excel Power's 15L tank is generous for a budget unit, while the Hyundai models balance tank size with fuel efficiency.
Start Method
Recoil start (pull cord) is standard on budget models. Electric start is more convenient, especially in bad weather. If you're buying for storm-season backup specifically, electric start is worth paying extra for. You can compare this to cordless drills where convenience features often justify the price jump.
Also consider: if you've already built DIY flood barriers, pairing them with a generator means you can run a sump pump to protect your workshop during the same storm event.
Frequently Asked Questions
What size generator do I need for a UK household during a power cut?
For essential items (fridge, freezer, phone charging, a few lights) you need roughly 1500-2000W continuous output. If you want to run a kettle or portable heater as well, look for 2500W or above. A 2000W inverter generator handles the basics; a 3000-3500W unit covers most UK homes comfortably.
Are petrol generators legal to use in the UK?
Yes, portable petrol generators are legal in the UK for private use. However, you must not run them indoors or in enclosed spaces due to carbon monoxide risk. Under the Clean Air Act, using one in a Smoke Control Area is restricted. Always place the generator outdoors, well away from windows and doors.
What is the difference between an inverter generator and a conventional generator?
Inverter generators use electronic circuitry to produce cleaner, more stable power (pure sine wave), making them safe for laptops, phones and sensitive electronics. They are also significantly quieter and more fuel-efficient. Conventional generators are louder, heavier and produce less stable power, but they are cheaper per watt of output.
How long does a portable generator run on a full tank?
Most portable inverter generators with a 3-5 litre tank run for 6-10 hours at 50% load. The Hyundai 2200W runs roughly 8 hours on its 3.5L tank, while larger units like the Hyundai 3200W get about 6-7 hours from a 5L tank. Fuel consumption depends heavily on the load you put on the generator.
Can I connect a portable generator to my house wiring?
You should never directly wire a portable generator into your home's consumer unit without a proper transfer switch installed by a qualified electrician. The safest approach is to use heavy-duty extension leads to power individual appliances. A manual transfer switch isolates your house from the mains, preventing dangerous backfeed into the grid.
Do I need to break in a new petrol generator?
Yes. Most manufacturers recommend a break-in period of 5-10 hours at varying loads before running the generator at full capacity. During break-in, change the oil after the first few hours. This allows internal components to seat properly and extends the generator's lifespan.
How loud are portable inverter generators?
Inverter generators typically produce 55-65 dB at 7 metres, roughly the volume of a normal conversation. Conventional generators are much louder at 70-80 dB. The quieter models (like the Hyundai 2200W at around 58 dB) are tolerable for overnight use if positioned a reasonable distance from the house.
Our Verdict
For most UK makers, the maXpeedingrods 3500W is the sweet spot of price and performance. At £215.99 with 255+ verified reviews and pure sine wave output, it handles storm-season backup without breaking the bank.
If budget is the priority and you only need to run power tools and pumps (not sensitive electronics), the Excel Power XL2200E at £199.00 gets the job done with its generous 15L tank.
For UK-based warranty support and genuinely quiet operation, the Hyundai 2200W at £441.99 is worth the premium. The electric start alone makes it easier to use during a storm, and the 3-year UK warranty adds real peace of mind.
Whichever you choose, get it set up and tested before storm season hits. A generator in the garage is useless if you haven't checked the oil, run it for 30 minutes, and figured out which extension leads you need.
Last reviewed: 8 September 2026. Prices and availability may have changed.