Best Solar Generators UK: Power Station + Panel Bundles (2026)

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The Quick Answer

If you want a solar generator that handles nearly every situation, the EcoFlow DELTA 2 paired with a 400W rigid solar panel is the best all-round solar generator for UK buyers. It provides 1,024Wh of battery capacity and 1,800W of output, enough to run a fridge, charge laptops, power lights, and keep your phone topped up for a full day. The 400W panel recharges the battery in roughly 3 to 4 hours of good sunlight. Combined cost is around £807.

For lightweight camping and festivals, the EcoFlow RIVER 2 with a 100W flexible panel is the budget pick at around £318. It is compact enough to carry in a rucksack and keeps phones, cameras, and small devices running for a weekend.

For serious off-grid power or whole-home emergency backup, the EcoFlow DELTA Pro 3 with two 400W rigid panels delivers 4,096Wh and can run a kettle, microwave, or power tools. It is a significant investment at around £3,397, but nothing else portable comes close to that level of output.

What Is a Solar Generator?

A solar generator is simply a portable power station paired with one or more solar panels. The panels convert sunlight into electricity, the power station stores it in a battery, and you plug in your devices when you need power.

The term “generator” is slightly misleading because there is no engine, no fuel tank, and no moving parts. A petrol generator burns fuel to spin an alternator. A solar generator just collects and stores energy from sunlight. The result is completely silent operation, zero fumes, no fuel costs, and very little maintenance.

A typical solar generator setup includes three components:

1. A portable power station with a lithium battery, AC outlets, USB ports, and a DC input for solar charging.
2. One or more solar panels that connect to the power station via a cable.
3. Cables and connectors (usually included with the power station).

You charge the battery during the day, either from the solar panels or from a mains socket, then draw power from it whenever you need it. Most modern power stations also support pass-through charging, meaning you can use them while they are being charged.

Solar generators are popular for camping, caravanning, garden offices, allotments, festivals, power cut backup, and remote work. They are not a replacement for a full rooftop solar installation, but they fill a gap that traditional solar cannot: portable, off-grid, ready-to-use power with no installation required.

Best EcoFlow Solar Generator Bundles

We have focused on EcoFlow because they offer the widest range of compatible power stations and panels in the UK, with strong build quality and a well-developed app for monitoring. Below are five bundles covering every budget and use case.

Bundle	Power Station	Panel	Combined Price	Capacity	Best For
Budget Camping	RIVER 2 (£209)	100W Flexible (£109)	~£318	256Wh	Day trips, festivals
Weekend Camping	RIVER 2 Pro (£499)	220W Bifacial (£349)	~£848	768Wh	Multi-day camping
All-Rounder	DELTA 2 (£508)	400W Rigid (£299)	~£807	1,024Wh	Garden, backup, camping
Heavy Duty	DELTA 2 Max (£1,189)	400W Rigid (£299)	~£1,488	2,048Wh	Caravans, extended off-grid
Off-Grid Pro	DELTA Pro 3 (£2,799)	2x 400W Rigid (£598)	~£3,397	4,096Wh	Remote work, whole-home backup

Budget Camping: RIVER 2 + 100W Flexible Panel

The smallest setup in the range, and ideal if you only need to keep phones, cameras, tablets, and a small LED light running. The RIVER 2 weighs just 3.5kg, making it genuinely portable. The 100W flexible panel weighs 2.4kg and rolls up for easy transport. Total weight under 6kg.

The 256Wh capacity gives you roughly 20 full phone charges or 4 to 5 hours of laptop use. The 100W panel recharges the battery in around 3 hours of direct sunlight. This is the setup to throw in the boot for a festival or a day out.

Weekend Camping: RIVER 2 Pro + 220W Bifacial Panel

A step up for multi-day trips. The RIVER 2 Pro triples the capacity to 768Wh and delivers 800W of output, enough to run a small electric cool box, charge multiple devices, and power a portable fan or heater. The 220W bifacial panel captures light on both sides, picking up reflected light from the ground. This helps on overcast days and in shaded campsites where light bounces around.

All-Rounder: DELTA 2 + 400W Rigid Panel

This is the bundle we recommend for most people. The DELTA 2 has 1,024Wh of capacity, 1,800W continuous output (with a 2,700W surge), and enough ports to run several devices simultaneously. The 400W rigid panel is the most efficient in EcoFlow’s range at 23%, and recharges the DELTA 2 in approximately 3 to 4 hours of good sunlight.

It works equally well in the garden, at a campsite, or kept in the house as a power cut backup. The DELTA 2 also doubles as a battery for EcoFlow’s PowerStream plug-in solar system, so if you later decide to go down the plug-in solar route, you already have the battery sorted.

Heavy Duty: DELTA 2 Max + 400W Rigid Panel

For caravanners, long camping trips, or anyone who needs to run higher-draw appliances. The DELTA 2 Max provides 2,048Wh of capacity and 2,400W output. That is enough to run a microwave for 30 minutes, power a small electric heater, or keep a caravan’s lights, fridge, and entertainment system going for a full day without solar input. With the 400W panel topping it up during the day, you can extend that indefinitely in decent weather.

Off-Grid Pro: DELTA Pro 3 + 2x 400W Rigid Panels

The DELTA Pro 3 is EcoFlow’s flagship. With 4,096Wh of capacity and 4,000W of output, it sits in a different category to everything else on this list. Two 400W rigid panels provide 800W of solar input, recharging the battery in roughly 6 to 7 hours of good sunlight. You can add more panels to reduce that time.

This is the setup for remote workers in off-grid locations, temporary site offices, or households that want serious backup power during outages. It will run a kettle, power tools, a washing machine, or a full home office setup. The price reflects that capability.

How to Choose the Right Bundle

Choosing the right solar generator comes down to two questions: what do you want to power, and for how long?

Common device power consumption

Device	Typical Wattage	Wh per Hour of Use
Smartphone charge	10-20W	10-20Wh
Laptop	30-65W	30-65Wh
LED light	5-15W	5-15Wh
Portable fridge/cool box	40-60W	40-60Wh
Electric blanket	50-100W	50-100Wh
CPAP machine	30-60W	30-60Wh
Mini projector	50-100W	50-100Wh
Wi-Fi router	10-20W	10-20Wh
TV (32”)	40-70W	40-70Wh
Microwave	800-1,200W	200-400Wh (15-20 min)
Kettle	2,000-3,000W	170-250Wh (5 min)

How to estimate your runtime

1. List the devices you plan to run.
2. Add up their wattage.
3. Multiply by the hours you will use them per day. This gives you your daily Wh requirement.
4. Compare that number to the battery capacity.

For example, if you want to run a laptop (50W), a portable fridge (50W), LED lights (10W), and charge two phones (20W) for 8 hours, your daily requirement is roughly 130W x 8 = 1,040Wh. The DELTA 2 (1,024Wh) covers this almost exactly, and a 400W panel recharges it the next day.

Keep in mind that battery efficiency is not 100%. Real-world usable capacity is typically 85 to 90% of the stated figure. Budget a small margin, and if you are between two sizes, go for the larger one.

Solar Charging in the UK

One of the most common concerns is whether solar generators actually work in the UK’s climate. The short answer: yes, but with realistic expectations.

What to expect from a 400W panel

In the UK, a south-facing 400W solar panel generates approximately:

• Summer (June-August): 2.0 to 2.5 kWh per day
• Spring/Autumn (March-May, Sept-Oct): 1.2 to 1.8 kWh per day
• Winter (Nov-Feb): 0.4 to 0.8 kWh per day

Northern Ireland receives around 950 kWh per kWp per year, which is slightly less than southern England (1,000 to 1,100 kWh/kWp) but more than enough to make solar charging practical for most of the year. Between March and September, a single 400W panel will fully recharge a DELTA 2 (1,024Wh) on most days.

Cloudy days

Solar panels still generate electricity on overcast days, but at reduced output. A heavy overcast day might produce 10 to 25% of the panel’s rated wattage. Light cloud cover reduces output to around 50 to 70%. This means a 400W panel might produce 40 to 100W on a heavily overcast day, or 200 to 280W under light cloud.

In practical terms, this extends your charging time rather than preventing it entirely. A charge that takes 3 hours in full sun might take 6 to 10 hours under cloud. If you are camping in November and need reliable power, charge the battery from a mains socket before you leave and use solar as a top-up.

Mains charging as backup

Every EcoFlow power station can also charge from a standard mains socket. Charging times from mains are fast: the DELTA 2 charges from 0 to 80% in about 50 minutes using EcoFlow’s X-Stream technology. This means you can always start a trip with a full battery, regardless of the weather forecast.

Panel Types Explained

EcoFlow offers three types of solar panel, and each suits a different situation.

Rigid panels

The 400W rigid panel is the most efficient option at 23% cell efficiency. It uses monocrystalline cells in a sturdy aluminium frame with tempered glass. At 11.2kg, it is not lightweight, but it is built to last outdoors. Rigid panels perform best when mounted at a fixed angle (30 to 35 degrees in the UK) and left in place. They are ideal for garden setups, flat roofs, caravan roofs, and semi-permanent off-grid installations.

Pros: Highest efficiency, most durable, best long-term value. Cons: Heavy, not easily portable, requires space.

Flexible panels

The 100W flexible panel weighs just 2.4kg and is only 2.5mm thick. It can bend up to 258 degrees, making it suitable for curved surfaces like boat decks, campervan roofs, and tents. The trade-off is lower power output and slightly reduced durability compared to rigid panels.

Pros: Ultra-lightweight, packable, works on curved surfaces. Cons: Lower wattage per panel, less durable over time.

Bifacial panels

The 220W bifacial panel captures sunlight on both sides. The front generates the rated 220W, while the rear picks up reflected light from whatever surface sits behind it. On a light-coloured balcony floor or a white wall, the rear side can add 5 to 15% extra output. These panels mount in portrait orientation, making them a good fit for balcony railings.

Pros: Dual-sided generation, good for balconies and walls. Cons: Rear benefit depends on surroundings, mid-range wattage.

Portable panels

The 400W portable panel is a foldable design with an integrated carry case and kickstand. It bridges the gap between rigid and flexible: high wattage (400W) in a package that folds down for transport. At 7.5kg, it is lighter than the rigid panel but still delivers strong output. The kickstand lets you set it up on any flat surface and angle it towards the sun.

Pros: High wattage, foldable, built-in kickstand. Cons: More expensive than rigid for the same wattage, kickstand can struggle in strong wind.

Which panel for which use case?

Use Case	Recommended Panel
Garden or fixed installation	400W Rigid
Camping (car-based)	400W Portable or 220W Bifacial
Camping (backpacking)	100W Flexible
Caravan roof	400W Rigid
Balcony	220W Bifacial
Boat or campervan roof	100W Flexible

Solar Generator vs Petrol Generator

If you are deciding between a solar generator and a traditional petrol generator, the differences are significant.

Factor	Solar Generator	Petrol Generator
Noise	Silent	65-80 dB (loud)
Fuel cost	Free (sunlight)	£1.40-£1.60 per litre
Fumes	None	Carbon monoxide (dangerous indoors)
Maintenance	Minimal (no engine)	Oil changes, spark plugs, filters
Indoor use	Safe	Dangerous (CO poisoning risk)
Portability	Good (battery weight)	Heavy (engine + fuel)
Running cost	Near zero	£0.50-£2.00 per hour
Sustained output	Limited by battery size	Unlimited (with fuel)
Environmental impact	Very low	High (emissions, fuel)
Upfront cost	Higher	Lower for equivalent output

Solar generators win on nearly every practical measure except one: sustained high-power output. A petrol generator can run indefinitely as long as you keep feeding it fuel. A solar generator is limited by its battery capacity and how quickly the panel can recharge it. For running power tools on a building site all day or powering a food truck for 12 hours straight, a petrol generator may still be more practical.

For everything else (camping, garden use, home backup, caravanning, festivals, allotments, remote work), a solar generator is quieter, cleaner, cheaper to run, safer indoors, and requires almost no maintenance.

Solar Generator vs Plug-In Solar

These two products solve different problems, and it is worth understanding the distinction before you buy.

A solar generator is portable and self-contained. The battery stores energy that you can use anywhere, on or off-grid. It does not connect to your home’s electrical system. You charge it from panels (or mains), then plug devices directly into it.

Plug-in solar (sometimes called balcony solar or micro solar) is a fixed installation that feeds electricity directly into your home’s mains supply via a micro-inverter and a standard plug socket. It reduces your electricity bill by offsetting the power you draw from the grid. You cannot take it with you, and it does not provide backup power during outages (unless paired with a battery).

When to choose a solar generator

• You need portable power for camping, caravanning, or outdoor activities.
• You want backup power during electricity outages.
• You rent your home and cannot install permanent solar.
• You need power at an allotment, shed, or remote location with no mains supply.

When to choose plug-in solar

• You want to reduce your monthly electricity bill permanently.
• You have a south-facing balcony, garden, or flat roof.
• You plan to stay in your home for several years (to recoup the investment).
• You want a set-and-forget system with no manual intervention.

When to choose rooftop solar

If your goal is to make a serious dent in your electricity costs, or to generate enough power for the bulk of your household consumption, a professionally installed rooftop solar system with battery storage is the best long-term investment. A typical 4kW system in Northern Ireland generates 3,400 to 3,800 kWh per year and can cut your electricity bill by 50 to 70%. You can compare quotes from local installers to get an idea of costs.

The crossover: EcoFlow’s dual-purpose batteries

One of EcoFlow’s strengths is that their Delta and River power stations work both as standalone solar generators and as batteries for the PowerStream plug-in solar system. If you buy a DELTA 2 as a solar generator today, you can later add a PowerStream micro-inverter and panels to create a plug-in solar system that stores excess energy in the same battery. This makes EcoFlow a particularly flexible choice if you are not sure which direction you will go.

Our Recommendations

Best for most people: DELTA 2 + 400W Rigid Panel (~£807)

The DELTA 2 and 400W rigid panel hit the sweet spot of price, capacity, and versatility. It handles garden use, camping, home backup, and caravan trips. The 400W panel recharges it in a single afternoon, and the DELTA 2’s X-Stream mains charging means you can always start fully charged. If you only buy one solar generator, this is the one.

Best budget option: RIVER 2 + 100W Flexible Panel (~£318)

The RIVER 2 and 100W flexible panel are the lightest and most affordable combination. Perfect for festivals, day hikes, fishing trips, and casual camping. It will not run a fridge, but it will keep all your personal electronics charged for a weekend without needing a mains socket.

Best for caravans: DELTA 2 Max + 400W Rigid Panel (~£1,488)

The DELTA 2 Max gives you double the capacity of the standard DELTA 2, which makes a real difference on extended trips. Pair it with a 400W rigid panel mounted on the caravan roof and you have a setup that keeps the lights, fridge, and entertainment running without needing a hook-up.

Best for off-grid and whole-home backup: DELTA Pro 3 + 2x 400W Rigid Panels (~£3,397)

The DELTA Pro 3 is overkill for casual use, but if you need to run power tools at a remote site, work from an off-grid cabin, or keep your household running through extended power cuts, nothing portable matches it. Two 400W rigid panels provide 800W of solar input, and the 4,096Wh battery stores enough energy to run essential household appliances overnight.

Best for weekend camping: RIVER 2 Pro + 220W Bifacial Panel (~£848)

The RIVER 2 Pro and 220W bifacial panel sit comfortably between the budget RIVER 2 and the all-rounder DELTA 2. With 768Wh and 800W output, it can run a cool box, charge everything, and power a small fan or heater. The bifacial panel works well in campsites where light bounces off surrounding surfaces.

Where to Buy

All of the products in this guide are available directly from the EcoFlow UK store. EcoFlow regularly runs sales, particularly around bank holidays, Black Friday, and Prime Day. Buying directly ensures you get the full manufacturer warranty and access to customer support.

Jackery, Bluetti, and Anker Solix also sell solar generator bundles in the UK. These are worth considering if EcoFlow’s range does not suit your specific needs, but we have found EcoFlow’s combination of build quality, app support, and ecosystem flexibility (particularly the dual-use with PowerStream) to be the strongest overall package for UK buyers.

Further Reading

• Best portable power stations UK for a detailed breakdown of power stations without panels.
• EcoFlow plug-in solar panels review if you are more interested in reducing your electricity bill than portable power.
• Solar battery storage guide for home battery systems that pair with rooftop solar.
• Compare solar quotes if you are ready to explore a full rooftop installation for your home.