EcoFlow’s NextGen 220W Bifacial Portable Solar Panel uses N-type TOPCon cells rated at 25% conversion efficiency, a 220W front side and a 175W rear side, according to EcoFlow’s U.S. product page. It folds to 24.2 x 23.2 x 1.3 inches, weighs about 15.4 pounds and carries an IP68 rating. On Oct. 17, 2026, EcoFlow’s U.S. store listed one panel at $399 and a two-pack at $769. Below I go through the spec sheet and setup, work out what it can realistically produce in a day, and show which power stations it pairs with cleanly.
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The specs below come from EcoFlow’s U.S. product page and the Amazon listing. Daily energy and pairing figures are my own estimates, and I’ve shown the math. You can check the current EcoFlow 220W bifacial panel listing on Amazon.
Quick Verdict
- Best for: owners of EcoFlow RIVER and DELTA stations, campers and van travelers who want a single high-output folding panel with a built-in stand.
- Standouts: 25% TOPCon cells, a 30-60° integrated stand with an angle guide, IP68 sealing and an XT60i cable in the box.
- Keep in mind: at about 85 inches unfolded it needs a clear spot on the ground, and its 21.5V Voc means you’ll often wire two in series for larger stations.
- Price on EcoFlow’s U.S. store: $399 single, $769 for two (Oct. 17, 2026).
EcoFlow NextGen 220W Bifacial Specifications
| Spec | EcoFlow NextGen 220W Bifacial |
|---|---|
| Model | EFSOLAR220W-N |
| Rated power | 220W (±5W) front / 175W rear |
| Cell type | N-type TOPCon monocrystalline silicon |
| Efficiency | 25% |
| Open-circuit voltage (Voc) | 21.5V (Vmp 18.4V) |
| Short-circuit current (Isc) | 12.4A front (Imp 11.9A); 9.9A rear (Imp 9.5A) |
| Unfolded size | 24.2 x 84.8 x 1.0 in (615 x 2155 x 25 mm) |
| Folded size | 24.2 x 23.2 x 1.3 in (615 x 590 x 32 mm) |
| Weight | About 15.4 lb (7.0 kg) |
| Stand | Integrated 30-60° adjustable stand with solar angle guide |
| Surface | Tempered glass and ETFE coating |
| Water/dust rating | IP68 |
| In the box | Panel, XT60i charging cable, protective bag, quick start guide |
| Warranty (U.S.) | 12 months |
Design and Setup
The panel folds like a book into a 24 x 23-inch package, and its protective bag doubles as storage. Unfolded, it’s a long strip just over seven feet long. EcoFlow built the stand into the panel rather than relying on the bag as a kickstand. The bracket sets angles from 30° to 60°, and a small solar angle guide shows when the panel is square to the sun. That makes it quick to re-aim a few times a day, which is one of the easiest ways to get more energy from any portable panel.
The front is tempered glass with an ETFE coating, while many folding panels use a plain laminate. The IP68 rating means rain and splashes are covered. EcoFlow’s guidance is to dry the connectors if they get wet and to avoid soaking the panel.
EcoFlow lists the panel’s own connector type as photovoltaic connectors. The included solar-to-XT60i cable turns that into the XT60 plug used on EcoFlow’s solar ports. For a station with MC4 inputs, you can skip the XT60 cable and run MC4 extension leads instead.
What the Bifacial Rear Side Really Adds
EcoFlow’s copy says the bifacial design collects “up to 25%” more energy on the bullet list and “up to 28%” in the feature section. Both are best-case figures. The rear side works off reflected light, so real gains depend on what’s under the panel: dark soil adds little, while light sand, concrete or a white tarp adds noticeably more. Our deep dive on bifacial vs monofacial solar panels goes through published field data and shows the rear-gain math for this panel at different ground reflectances.
For planning, I treat the rear side as a bonus of roughly 5-15% on typical campsites and size the system on the 220W front rating alone.
Worked Example: How Much Energy Per Day?
Portable panels typically deliver about 70-80% of their rating once heat, angle and cable losses are counted. I use 75% times peak sun hours (PSH):
| Setup | 4 PSH | 5 PSH | 6 PSH |
|---|---|---|---|
| 1 panel (front only) | About 660Wh | About 825Wh | About 990Wh |
| 1 panel + 10% rear gain | About 725Wh | About 910Wh | About 1,090Wh |
| 2 panels in series (front only) | About 1,320Wh | About 1,650Wh | About 1,980Wh |
Math: 220W x 0.75 x PSH, then x 1.10 for the rear-gain row. On a typical 5 PSH day, one panel puts back about 825Wh. That’s enough to cover a 12V fridge averaging 30W (720Wh a day) with a little to spare, or to refill most of a 1kWh station.
Pairing It With Power Stations
Three spec-sheet numbers decide how to wire the panel to your station: its Voc (21.5V), its Isc (12.4A front) and its rated power (220W).
EcoFlow DELTA 2 Max (11-60V, 15A, 500W per port)
- One panel: 21.5V and 12.4A fit easily. Expect up to 220W.
- Two in series: 43V Voc (about 48V in cold weather) and 12.4A, so roughly 440W per port. This is the sweet spot.
- Three in series: 64.5V Voc is over 60V, so don’t do it.
- Using both ports, four panels (two strings) give 880W of front-side rating.
Full details are in our DELTA 2 Max solar charging guide.
BLUETTI AC180 (12-60V, 10A, 500W)
The AC180 needs at least 12V Voc, which one panel (21.5V) meets. Its 10A input cap is below the panel’s 11.9A Imp, so the station will cap the current. At roughly 18.4V x 10A, one panel delivers about 184W, and two in series about 368W. It works. Since the AC180 takes MC4 input, connect the panel’s photovoltaic leads directly or through MC4 extensions rather than using the XT60 cable. See our BLUETTI AC180 review for its full input specs.
Any station: a quick checklist
- Multiply 21.5V by the number of panels in series, add about 10-15% for cold mornings, and keep the result under the station’s max Voc.
- Make sure the station’s minimum voltage is at or below about 18V (one panel’s working voltage).
- Compare the station’s max current with 11.9-12.4A. A lower limit is safe, but it clips output.
- Match the connector: use the XT60i cable for EcoFlow stations, MC4 leads for MC4 inputs, or an adapter for Anderson or 8mm ports.
NextGen vs the Original EcoFlow 220W Bifacial
EcoFlow’s comparison table sets the NextGen panel apart from its earlier portable panels:
| Feature | NextGen panels | Original EcoFlow panels |
|---|---|---|
| Cell type | N-type TOPCon | P-type PERC |
| Weight range (lineup) | 5.1-7.2 kg | 5.6-9.5 kg |
| Stand | Integrated 30-60° adjustable stand | Separate kickstand case |
| Angle guide | Integrated solar angle guide | None |
Practically, the NextGen panel’s built-in stand is the biggest day-to-day improvement. You unfold it, flip out the stand and aim it, with no separate case to prop and secure.
Tips for Getting the Most Out of It
- Re-aim at least three times a day. Morning, midday and afternoon adjustments with the angle guide pick up much more than leaving the panel at one fixed angle.
- Give the rear side some light. Raise the panel at its steeper stand angles and put something light-colored under it, like a tarp, gravel or sand, so reflected light reaches the back.
- Avoid partial shade. A shadow from a branch or a roof rack across a few cells can cut output far more than the shaded area suggests.
- Keep it cool. Panel output falls as cell temperature rises. Leave airflow behind the panel instead of laying it flat on hot asphalt.
- Keep cable runs short. Long, thin extensions lose voltage. If you need distance, use heavier-gauge MC4 extensions.
Who Should Buy It
- EcoFlow owners: the XT60 cable plugs straight in, and two in series fits the DELTA-series voltage windows.
- Campers with light-colored ground: sand, gravel or a tarp under the panel makes the rear side worthwhile.
- Anyone who re-aims often: the integrated stand and angle guide make tracking the sun quick.
If you need to carry panels a long way on foot, a lighter 100W-class panel may suit you better. Our portable solar panels for camping guide compares sizes and weights.
FAQ
Is the EcoFlow 220W bifacial panel waterproof?
It’s rated IP68 for water and dust. EcoFlow advises drying the connectors if they get wet and not soaking the panel.
Can I connect two EcoFlow 220W panels in series?
Yes, on stations that accept at least about 48V (43V Voc plus a cold-weather margin). The DELTA 2 Max’s 60V inputs handle two in series per port.
Does the rear side really add 25-28%?
Those are EcoFlow’s best-case figures. Typical ground gives a smaller boost, so plan around the 220W front rating and treat rear gain as a bonus.
What cable comes with it?
A solar-to-XT60i charging cable for EcoFlow stations, plus a protective bag.
How long does it take to charge a 1kWh station?
At about 165W of real output (75% of 220W), roughly 6 hours of strong sun, or a bit over one full day at 5 peak sun hours.
Can I use it with a non-EcoFlow power station?
Yes, if the station’s solar input accepts at least about 18-22V and the right connector. Use MC4 leads or an adapter, and check the station’s current limit against the panel’s 12.4A Isc.
What’s the warranty?
EcoFlow lists 12 months in the U.S.
Bottom Line
EcoFlow’s NextGen 220W bifacial panel pairs 25% TOPCon cells with a smart integrated stand and IP68 sealing. Two in series is a natural match for DELTA-class stations, and a single panel can carry a 12V fridge through a sunny day. Check the current 220W bifacial panel price on Amazon, or compare it with EcoFlow’s store price.