Portable Solar Panels for Camping: How Many Watts You Need and How to Set Them Up

Portable solar panels are folding panels you set up at camp to recharge a portable power station or battery, which then runs your devices. For most campers, one panel of 100 to 220 watts can keep up with phones, lights and a laptop, while running a 12-volt fridge for several days usually takes about 200 to 400 watts of panels and a battery of around 1,000 watt-hours. The panel refills the battery during the day; the battery does the real work around the clock.

Key takeaways

• Size panels from your daily watt-hours and the peak sun hours where you camp, not from the panel's label alone.
• Real output is lower than the rated watts because of sun angle, heat, shade and charging losses.
• Series wiring adds voltage; always stay below your power station's maximum input voltage.
• Foldable panels cost more per watt than rigid ones but are lighter and pack flat.
• Keep the battery shaded and dry, and remember lithium batteries have cold-charging limits.

How portable solar panels work at camp

A portable panel produces direct current (DC) whenever light hits it. You plug it into the solar input of a power station or into a charge controller wired to a battery. The power station's built-in controller converts the panel's output into the right voltage to charge its battery, and its inverter provides 120 V AC outlets for anything that plugs into a wall.

Two specs on the panel matter most for matching it to your power station:

• Voc (open-circuit voltage): the highest voltage the panel puts out with no load. Your power station's input limit must be higher than this.
• Vmp and Imp: the voltage and current at maximum power, which tell you roughly how many watts the panel delivers in full sun.

For example, EcoFlow lists its NextGen 220 W bifacial portable panel at 21.5 V Voc, 18.4 V Vmp and 11.9 A Imp on the front side, with 25 percent efficiency, an IP68 rating and a weight of about 15.4 pounds. Its rear side is rated 175 W, which only helps if light reflects up from sand, snow or a light-colored surface.

Sizing math: how many watts of portable solar panels you need

Start with what you will run. DOE's Energy Saver formula is wattage times hours of use per day, divided by 1,000, for kWh; for camping, it is easier to stay in watt-hours (Wh). If a device lists only amps, multiply amps by volts. Our kWh calculator does the arithmetic.

Here is a sample camping day. The fridge figure comes from Victron Energy's sizing example for a 12 V, 70-liter fridge; the rest are round numbers for illustration:

• 12 V fridge: 500 Wh
• Phones, headlamps and string lights: say 100 Wh
• Total: about 600 Wh per day

Now divide by peak sun hours. At 5 peak sun hours, 600 / 5 = 120 W of panel would just break even on a perfect day. Real conditions are rarely perfect: the panel heats up, it is not always aimed squarely at the sun, and the charger loses a little in conversion. Doubling the bare minimum is a sensible starting point, which puts this camp at about 220 to 250 W of panels. Without the fridge, a single 100 W panel would cover phones and lights easily.

Check how long a battery will last between sunny days, too. A 1,024 Wh power station such as the EcoFlow DELTA 3 Plus would run this 600 Wh load for a bit more than a day and a half with no sun at all, before inverter or conversion losses.

Wiring portable panels: series vs parallel

Many campers link two panels for more power. How you connect them matters.

Setup (EcoFlow 220 W panel specs)	Open-circuit voltage	Within a 60 V input limit?	Notes
One panel	21.5 V	Yes	Simplest setup
Two in series	43 V	Yes	Voltage adds; current stays about the same
Three in series	64.5 V	No	Exceeds the limit; could damage the input
Two in parallel	21.5 V	Yes	Current adds; check the input's current limit

The 60 V figure comes from the DELTA 3 Plus, which EcoFlow lists with two DC solar inputs, each accepting 11 to 60 V and up to 500 W. Two 220 W panels in series (440 W) would fit one input. Other power stations have different limits, so always compare the combined Voc with your unit's manual. Panel voltage also rises in cold weather, so leave some headroom on frosty mornings.

Victron's sizing guide notes that series wiring raises voltage, while parallel wiring raises current, handles partial shade better and requires thicker cables. Our watts to amps calculator shows how current climbs as voltage drops.

What a portable solar setup can and cannot run

The panel does not limit what you can plug in; the power station does. Its inverter rating sets the biggest load and its battery sets the run time. The DELTA 3 Plus, for instance, lists 1,800 W continuous AC output with a 3,600 W surge.

• Good fits: phones, cameras, headlamps, LED lights, laptops, fans, 12 V fridges and coolers, small pumps for air mattresses.
• Short bursts only: electric kettles, coffee makers and hair dryers. They may run if under the inverter's limit but drain a 1 kWh battery quickly. Check typical use on our cost to run pages.
• Not realistic: space heaters, electric cooking for a group, or air conditioners for a full night on a small setup.

Getting the most from portable solar panels

1. Aim and re-aim. Face the panel toward the sun and adjust its kickstand angle every couple of hours.
2. Avoid shade. Even a branch shadow across part of a panel can cut output sharply.
3. Keep panels cool. Leave space under the panel for airflow; hot panels produce less.
4. Shade the battery. Put the power station in the shade with the panel in the sun, using the cable length you have.
5. Charge early. Start charging in the morning so the battery is full before evening.
6. Use a longer cable instead of moving camp. A sunny clearing a few yards away beats a shaded tent site.

Safety tips for camping with solar

• Cold charging: Battle Born says LiFePO4 batteries should not be charged below about 25°F unless they have internal heating, and that its battery management system blocks charging outside safe limits. Check your power station's charging temperature range for fall and winter trips.
• Water: panel ratings like IP68 do not make the power station waterproof. Keep connectors and the battery dry.
• Cords: route cables where people will not trip over them, and do not pinch them in doors.
• Fuel generators: if your group also brings a gas generator, the Consumer Product Safety Commission says never to use one inside homes, garages, sheds or other enclosed areas, even with doors or windows open, and to run it outdoors at least 20 feet from buildings. Treat a tent or camper the same way. A solar setup has no exhaust, which is one reason many campers prefer it.

What portable solar panels cost

Prices listed on manufacturers' U.S. sites in November 2026 give a sense of the trade-offs:

• EcoFlow NextGen 220 W bifacial foldable panel: $449, about $2.04 per watt (listed as sold out, available as a pre-order).
• Renogy 100 W rigid panels: $157.70 for a two-pack at a pre-Black Friday sale price, about $0.79 per watt.
• EcoFlow DELTA 3 Plus power station, 1,024 Wh: $719 sale price, $799 regular (shown as a pre-order).

Rigid panels cost far less per watt but are heavier, bulkier and need a stand or mount. Foldable panels earn their premium when you carry them, pack them in a car or move them through the day. If you camp in an RV or trailer, roof-mounted rigid panels often make more sense; see our RV solar guide.

Next steps

List what you will power at camp, total the watt-hours with the kWh calculator, and choose a power station that covers at least a day of use. Then size your portable solar panels to refill it in the sun hours you expect, and check the voltage limit before wiring panels together.