10 Best Ecoflow Solar Generators 2025 in the United States

The EF ECOFLOW Solar Generator Delta 3 is a powerful and versatile solar generator suitable for home backup, camping, and RV use. It features a 1024Wh lithium iron phosphate (LFP) battery, known for its long lifespan—lasting up to 10 years with minimal capacity loss after thousands of charge cycles. The capacity can be expanded up to 5kWh by connecting additional battery packs, making it ideal for users needing more power over time.

This generator delivers 1800W continuous AC power and 100W through USB-C, allowing you to operate multiple devices or appliances simultaneously—up to 13 at once, including some power-hungry ones using its X-Boost feature. Charging is impressively fast, fully charging in under an hour via AC or solar input, with a 220W bifacial solar panel included. The bifacial panel is more efficient than typical ones, collecting energy from both sides to speed up outdoor charging.

Portability is reasonable for its category, weighing about 43 pounds, which is manageable but not ultra-light, making it best for users who can carry it short distances or transport it by vehicle. It offers various outlets, including AC and USB options, covering most device needs, and comes with multiple charging cables and a protective bag for added convenience. However, the size and weight make it less suited for backpacking or very remote treks. Additionally, since the solar panel and power station ship separately, setup may require some assembly. This model is a strong option for those seeking reliable, fast solar charging with robust power output and long battery life, ideal for emergency backup and outdoor activities where vehicle transport is possible.

The EF ECOFLOW Solar Generator 3.6KWh DELTA Pro is designed to be a robust home backup solution and an outdoor power source for camping or RV needs. One of its main strengths is the large 3600Wh battery capacity, which can handle high power outputs up to 4500W with the X-Boost technology. This makes it capable of powering most household appliances in an emergency. It also features five AC outlets and a total of 15 various ports, making it versatile for charging multiple devices simultaneously. The generator's smart app control adds convenience, allowing you to monitor and manage charging status and settings remotely via Wi-Fi or Bluetooth.

The included 400W solar panels are highly efficient with a 22.4% conversion rate and are both portable and durable, with an IP68 waterproof rating. However, the generator itself is quite heavy at 99 pounds, which may limit its portability for some users. Another potential drawback is the relatively long recharge time with a single solar panel, which is around 11 hours. For quicker charging, multiple panels are needed, which could be an added expense. Additionally, the generator and solar panels are shipped separately, which might require some coordination for setup.

The DELTA Pro is suited for those needing a powerful and versatile power source with good efficiency and multiple charging options, despite its weight and potential additional costs for faster solar charging.

The EF ECOFLOW DELTA 2 Solar Generator is a solid choice for those needing reliable portable power, especially for camping, RV trips, or home backup. Its 1024Wh Lithium Iron Phosphate (LFP) battery is designed to last a long time—about 3000 charge cycles—meaning you won’t need to replace it anytime soon. The 1800W continuous output (with a 2700W surge) can handle most household and outdoor appliances, making it quite versatile. With 15 different outlets, you can power up to 15 devices simultaneously, which is great for groups or multiple gadgets.

The two included 100W solar panels are efficient, converting 23% of sunlight, and can recharge the generator fairly quickly—around 5 hours with two panels or even less with three—helping you stay off the grid longer. The unit weighs 27 pounds and measures 8 x 11 x 15 inches, so it’s portable enough to carry on camping trips, though not the lightest option if you plan on hiking far. One nice feature is that you can expand the battery capacity up to 3kWh by adding extra batteries if you need more power for longer periods.

The generator also supports fast AC charging, which replenishes energy much quicker than many competitors. However, the solar panels and generator arrive separately, which may require some setup. If you want a quiet, eco-friendly alternative to gas generators with robust power delivery and flexibility, this model fits well. It is a bit heavier and pricier compared to smaller units, but it delivers excellent battery life, power output, and multiple charging options that suit outdoor enthusiasts and homeowners alike.