What size portable solar panel do I need to recharge a power station?

Match the panel to how fast you need the refill. A 100W panel harvests roughly 300-500Wh on a good day once you account for angle, heat, and clouds, which tops up phones, lights, and a small power station. To refill a 1,000Wh station in a single day you want 200-400W of panel; to keep a whole-home backup kit fed you are into the kilowatts, which is the job of rigid roof or ground-mounted panels, not folding ones.

Is a 400W portable solar panel worth twice the price of a 220W?

Only if you need the harvest in one panel rather than two. The Anker SOLIX PS400 at $599.99 works out to about $1.50 per watt, versus roughly $1.36 per watt for the EcoFlow NextGen 220W at $299.00, so on paper two 220W panels give you more watts for the money. The 400W wins on setup time, cable count, and the single footprint you have to aim and move, which matters if you are deploying it alone or repeatedly.

What is the difference between a folding portable panel and a rigid 12V panel?

Folding panels have a built-in kickstand and a cable that plugs straight into a power station — they are made to be carried out, aimed, and put away. Rigid panels like the Rich Solar MEGA 200W are framed glass panels meant to be bolted to a roof, a rack, or a ground mount and wired through a charge controller. Rigid panels cost far less per watt (the MEGA 200W is about $1.13 per watt) but they are a build, not a plug-in.

Do portable solar panels work on cloudy days?

They produce, but far less. Expect roughly 10-25% of rated output under heavy overcast and something like 40-70% under thin or broken cloud. This is why sizing for a multi-day outage means sizing for a bad day, not a perfect one — and why a panel that is easy to re-aim through the day earns more than its rating suggests.

Best Portable Solar Panels 2026: 100W vs 220W vs 400W Compared

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Portable solar panels are sold on rated wattage, and rated wattage is the least useful number on the box. It’s measured under lab conditions you will never see in your backyard. What actually decides which panel is right for you is more boring: what it costs per watt, whether you can carry and aim it by yourself, and whether it plugs into the battery you already own.

So here are four panels people actually buy — 100W, 200W, 220W, and 400W — lined up on the numbers that matter.

Cost per watt: the number the marketing skips

Panel	Type	Price / cost per watt	Buy
Rich Solar MEGA 200W 12V monocrystalline	Rigid, framed — roof, rack, or ground mount	$225.99 · ~$1.13/W	Check price →
EcoFlow NextGen 220W	Folding portable, plugs into EcoFlow stations	$299.00 · ~$1.36/W	Check price →
Anker SOLIX PS400 (most output)	Folding portable, 400W in one panel	$599.99 · ~$1.50/W	Check price →
Jackery SolarSaga 100W Air	Folding portable, ultralight	$249.00 · ~$2.49/W	Check price →

Prices as listed at the time of writing; all four carry 5.0 ratings on the store. The spread runs from $1.13 to $2.49 per watt — more than double — and every step up that ladder buys you something specific.

What each one is actually for

Rich Solar MEGA 200W — cheapest watts, if you’re willing to build

The MEGA 200W is a rigid, framed 12V monocrystalline panel, and it’s the cheapest energy on this list by a wide margin. That price comes with a condition: it’s a component, not an appliance. You mount it, you wire it, and you run it through a charge controller into a 12V battery bank. Nobody folds this into a trunk.

For a cabin, an RV, a shed, a van build, or a permanent ground-mounted array feeding an off-grid system, it’s the obvious answer — and stacking three of them still costs less than one PS400. If that’s your direction, you’ll also need the charge controller and mounting hardware that a rigid panel implies, which our kit-versus-DIY cost breakdown works through.

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EcoFlow NextGen 220W — the value sweet spot for folding panels

Among panels you actually unfold and aim, the NextGen 220W has the best cost per watt at roughly $1.36. Two of them get you 440W — more than the PS400 — for $598, which is less than the single 400W panel. If you own an EcoFlow power station, this is the default recommendation, and it’s the one to buy in pairs.

The catch is the one you’d expect: two panels means two setups, two cables, and two things to re-aim when the sun moves.

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Anker SOLIX PS400 — most harvest per setup

The PS400 costs the most in absolute terms and sits in the middle on cost per watt. What it buys is consolidation: 400W of harvest from one panel, one cable, one thing to carry out and angle. On a day when you’re re-aiming every couple of hours to chase the sun, or you’re doing this in weather with one free hand, that’s not a small convenience — it’s the difference between a panel that gets deployed and one that stays in the garage.

It’s also the natural companion to an Anker SOLIX battery, and the one to pick if a single unit needs to keep a power station meaningfully topped up through a multi-day outage.

▶ Check the Anker SOLIX PS400 code CHADPENFOLD — 10% off

Jackery SolarSaga 100W Air — you’re paying for weight, not watts

At about $2.49 per watt, the SolarSaga 100W Air is the most expensive energy here, and that’s the whole point of it. The “Air” is Jackery’s ultralight design, built to be carried rather than merely moved. For backpacking, a small van, a boat, or anyone who can’t wrestle a 400W slab, low weight isn’t a luxury feature — it’s the deciding one.

Judge it as portable gear, not as a solar purchase. If you’re buying watts for a house, buy watts. If you’re buying something you’ll actually carry a mile, buy the Air.

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How much power you’ll really get

Rated wattage assumes full midday sun, a perfect angle, and a cool panel. Real life gives you none of those at once. A workable planning rule:

Daily harvest ≈ rated watts × 3 to 5 hours, in decent conditions with occasional re-aiming
A 220W panel: roughly 660–1,100Wh on a good day
A 400W panel: roughly 1,200–2,000Wh on a good day
Heavy overcast: assume 10–25% of those figures

Then work backwards. If your outage essentials burn 3kWh a day, one 400W panel doesn’t cover it — you’re topping up, not breaking even. That’s the calculation that sends most people toward either more panel or a bigger battery, and it’s the same math behind our whole-home backup kit comparison.

Don’t forget the cable

A panel that doesn’t reach the battery, or ends in the wrong connector, is decoration. Most portable panels terminate in MC4; most power stations want XT60 or a proprietary input. Budget for the adapter and the extension run before you order — our solar cable and connector guide covers what actually plugs into what.

The pick

Most homes and most power stations: two EcoFlow NextGen 220W panels — best folding-panel value, 440W total
One-panel simplicity, biggest harvest: the Anker SOLIX PS400
Permanent cabin, RV, or off-grid build: the Rich Solar MEGA 200W, in multiples
Carrying it on your back: the Jackery SolarSaga 100W Air

▶ Buy the EcoFlow NextGen 220W — $299.00 code CHADPENFOLD — 10% off

▶ Buy the Anker SOLIX PS400 — $599.99 code CHADPENFOLD — 10% off

▶ Buy the Rich Solar MEGA 200W — $225.99 code CHADPENFOLD — 10% off

Keep reading: Whole-home backup kits compared · Solar cables and connectors · Solar costs by state