Yes — the EF ECOFLOW 2PCS 100W Rigid Solar Panel is worth buying if you want a compact, weatherproof panel for an EcoFlow-based off-grid setup, especially at its current all-time low of £139.00. With a 4.6/5 rating from 235 reviews, it has the kind of buyer approval that usually signals a dependable product rather than a gamble.

First impressions

At 98 x 58.7 x 3 cm and 6.21 kg per panel, this is a fairly manageable rigid panel rather than a bulky rooftop slab. The design is aimed at straightforward installation: pre-drilled holes make mounting easier, and the rigid format suits fixed solar panel kits far better than a foldable panel meant for occasional use. For anyone building a more permanent off-grid system, that matters more than flashy portability.

What the key specs actually mean

The headline feature is the 23% conversion efficiency. In practical terms, that gives the panel a stronger chance of producing useful power in less-than-perfect UK conditions, where overcast skies and low winter sun can crush output. The listing says it can produce an average of 400-500 Wh or 35-45 Ah, which is a sensible daily yield range for a 100W-class panel under decent conditions, though actual output will vary heavily with season, angle, shading, and location.

The IP68 waterproof rating is another real advantage. In the UK, where panels often have to cope with persistent rain, wind, dust, and debris, that level of protection is a meaningful durability benefit rather than marketing filler. If you are leaving panels exposed as part of a fixed system, that weather resistance is a major plus.

Performance assessment

This panel’s strongest use case is steady, predictable charging rather than maximum portability. The 23% efficiency should help it squeeze more energy from limited daylight, which is especially useful in autumn and winter when solar generation drops sharply. That said, 100W panels are still modest in output, so buyers expecting to run heavy loads directly from solar will need multiple panels or battery storage.

The EcoFlow ecosystem compatibility is also important. If you already use EcoFlow Power Kits or are planning a matched system, the panel fits neatly into that setup and reduces compatibility headaches. For a buyer who wants a plug-and-play path into a broader solar ecosystem, that integration adds real value.

Build quality and installation

The rigid construction is a strength for long-term use. At 6.21 kg, each panel is light enough to handle without much hassle, but substantial enough to feel like a proper fixed installation component. Pre-drilled mounting holes suggest the panel is designed for secure attachment, which is exactly what you want for roof, shed, caravan, or garden installations where wind loading matters.

The main trade-off is obvious: rigid panels are less convenient to move than foldable alternatives. If your priority is camping portability or packing the panel away after each use, a foldable design may suit you better.

Is it good value for money?

At £139.00, this is priced very close to its average of £143.72 and below its highest recorded price of £209.00. More importantly, it is currently the all-time lowest price, with the lowest ever recorded at £132.84. That makes now a strong buying window.

Compared with BLUETTI alternatives, the value case is clear. A BLUETTI PV120 120W panel is £260.04, while other BLUETTI 120W options are listed at £418.70, and a 350W BLUETTI panel is £599.00. Even allowing for differences in wattage and form factor, the EcoFlow panel is dramatically cheaper and far easier to justify for budget-conscious off-grid buyers.

Who should avoid it?

If you need a highly portable solar panel for travel, this is not the best fit because it is rigid rather than foldable. And if your goal is high daily energy production, a single 100W panel will be limiting, especially through a UK winter.

Bottom line on the numbers

This is a well-rated, weather-ready rigid panel with a strong efficiency figure, sensible installation features, and a price that is currently as low as it has ever been. For fixed EcoFlow-compatible systems, it makes a lot of sense. For portable, high-output, or heavily expandable setups, you may need to look at larger or different-format panels instead.