Best Solar Generators of 2026
A solar generator is a battery in a box with an inverter and a solar input. It is the quiet, fume-free way to keep the lights, fridge, and phones running in an outage, or to power a campsite. The right one comes down to two numbers: watt-hours of storage and watts of output. Here are the picks that get those right, by how you plan to use it.
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EcoFlow Delta 2
Who it is for: Most people who want backup plus portability.
- +1,024 Wh of LiFePO4 storage that runs most household essentials, expandable with add-on batteries.
- +1,800 W output (2,700 W surge) handles a fridge, CPAP, and electronics at once.
- +Recharges unusually fast from the wall and takes up to 500 W of solar.
Watch out: It is heavy at about 27 lb, which is the trade for that capacity.
Anker SOLIX C1000
Who it is for: Buyers who want LiFePO4 and strong output without overpaying.
- +1,056 Wh and a strong 1,800 W output for the price.
- +LiFePO4 cells rated for years of daily cycling.
- +Compact and quick to recharge.
Watch out: Solar input tops out lower than the EcoFlow, so daytime recharging is a bit slower.
EcoFlow Delta Pro
Who it is for: Whole-room or partial-home backup during long outages.
- +3,600 Wh base, expandable past 10,000 Wh, with 3,600 W output (4,500 W surge).
- +Can tie into a transfer switch to back up circuits in your panel.
- +Wheels and a luggage handle, because it is large.
Watch out: Big and expensive; overkill if you only need to ride out short outages.
Jackery Explorer 300 Plus
Who it is for: Camping, travel, and keeping devices alive off-grid.
- +Light and small enough to carry one-handed.
- +LiFePO4 chemistry in a compact unit, which is rare at this size.
- +Plenty for phones, laptops, a fan, and small gear.
Watch out: Not enough to run a fridge for long; this is a device-and-small-loads unit.
What actually matters when buying
Watt-hours are your runtime, watts are your ceiling. Two different numbers matter. Watt-hours (Wh) is how much energy is stored, which sets how long it runs. Watts (W) is how much it can deliver at once, which sets what you can plug in. A 1,000 Wh unit with 1,800 W output can run an 800 W fridge for roughly an hour per 800 Wh used, but cannot start a 2,000 W tool. Match both to your loads.
Insist on LiFePO4 batteries. Lithium iron phosphate (LiFePO4 or LFP) cells last far longer than the older NMC lithium, often 3,000 or more cycles to 80% capacity versus several hundred, and they are more tolerant of heat. For anything you will cycle regularly, LiFePO4 is worth it and is now standard on the better units.
Solar input decides how fast it refills. A solar generator is only as useful in a long outage as its ability to recharge from panels. Check the maximum solar input in watts and the connector type. More input means a full battery by afternoon instead of a trickle. You usually buy panels separately.
Pure sine wave and the right outlets. Make sure the inverter is pure sine wave so it runs sensitive electronics and motors cleanly. Then count the outlets you need: AC, USB-C with enough wattage for a laptop, USB-A, and a 12 V port for car-style gear.
How we picked
These picks are based on published specifications, battery chemistry, output, solar input, and broad owner feedback, not on paid placement. We have not bench-tested every unit. Capacities and model names reflect current versions at the time of writing; confirm the exact spec before buying.
Useful next
Best portable solar panels, Solar panel calculator.
Frequently asked questions
What can a solar generator run?
It depends on the watt-hours and output. A 1,000 Wh unit with 1,800 W output can run a typical fridge, phones, laptops, a CPAP, lights, and a TV, though not all at once and not indefinitely. To run a fridge overnight plan on at least 1,000 Wh and recharge by solar during the day. High-surge appliances like space heaters, microwaves, and well pumps need a large unit with high output.
How big a solar generator do I need?
Add up the watts of what you want to run at once to pick the output, then estimate the watt-hours by multiplying each load's watts by the hours you need it. Phones and lights need only a few hundred watt-hours; keeping a fridge going through a multi-day outage points to 1,000 to 3,000 Wh plus solar panels to recharge.
Are solar generators worth it?
For quiet, fume-free backup you can use indoors, and for camping or RV power, yes. They cost more per watt-hour than a gas generator but need no fuel, make no noise, and require almost no maintenance. For powering a whole house through long outages, a gas or propane generator or a home battery is usually more practical.
What is the difference between LiFePO4 and regular lithium?
LiFePO4 (lithium iron phosphate) lasts much longer, often 3,000 or more charge cycles versus several hundred for older NMC lithium, and tolerates heat better, at a small cost in weight and energy density. For a unit you will recharge often, LiFePO4 is the chemistry to want, and it is standard on the better models now.
How long do solar generators last?
A quality LiFePO4 unit holds up for years, typically 3,000 or more cycles to 80% of original capacity, which is roughly a decade of regular use. The inverter and ports usually outlast the battery. Cheaper NMC units age faster, which is the main reason to pay for LiFePO4.