10 Best Off Grid Solar Generators 2025 in the United States

The EF ECOFLOW DELTA Pro 3 is a robust contender in the off-grid solar generator category, designed to cater to a range of power needs from home use to camping and emergencies. Its impressive 4096Wh battery capacity is a standout feature, with the ability to expand up to 48kWh if necessary, which makes it a reliable choice for extended power outages or off-grid living. The 4000W AC output, capable of scaling up to 12000W, means it can power almost any household appliance, including heavy-duty ones like central AC units or water pumps. This power station is versatile in its charging options, supporting solar, gas, and EV charging among others, effectively removing the hassle of frequent refueling.

Despite its significant power capacity, the DELTA Pro 3 is quite user-friendly with a plug-and-play setup that even a child could manage. Its portability is somewhat hampered by its weight of 150 pounds, but the inclusion of a handle design enhances ease of movement. The use of automotive-grade LFP cells and IP65-rated technology protects the battery, promising durability and a long lifespan, further backed by a 5-year warranty.

It's an ideal choice for residential use, RVs, or as a backup in power outages, appealing to those who prioritize a durable, powerful, and multi-functional energy solution. However, potential buyers should be prepared for its size and weight when contemplating mobility needs. The noise level is kept to a minimum thanks to X-Quiet technology, making it suitable for indoor use without disturbance.

The Jackery Solar Generator 300 is a compact and lightweight option for portable power off-grid. With a 293Wh lithium battery and a 300W pure sine wave inverter, it provides clean and stable electricity that's safe for sensitive devices like laptops and cameras. Its two AC outlets and multiple USB ports allow charging of up to six devices simultaneously, which is convenient for camping or travel. The included 100W SolarSaga solar panel efficiently recharges the battery through an MPPT controller, making solar power a practical option, with recharge times depending on sunlight availability.

One notable feature is its rapid recharge capability—approximately 80% in 2 hours when using wall and USB-C PD ports together. Weighing only 7.1 pounds, it is easy to carry and fits well into backpacks for outdoor activities. However, the battery capacity and 300W power limit mean it is not suitable for high-power appliances or long-term off-grid living; it is ideal for charging small electronics and running low-power devices during short trips or emergencies.

Although it lacks built-in expandability for extra batteries, its solar compatibility and multiple charging options provide flexibility. This generator is well suited for campers, RV users, and anyone needing reliable backup power in a lightweight, portable package.

The EF ECOFLOW Solar Generator DELTA2 stands out with its impressive 1800W power output, making it capable of handling 90% of common appliances, which is superb for off-grid scenarios. The LFP (LiFePO4) battery is another highlight, boasting a long lifespan with 3000+ cycles, ensuring durability and reliability over years of use.

Portability is reasonably managed with a weight of 58 pounds, which can be carried for camping or RV trips, although it might be heavy for some users. The included 220W bifacial solar panel is efficient, capturing up to 25% more energy, and the ability to handle up to 500W solar input means faster recharging in sunny conditions.

The expandability is a significant advantage, allowing users to increase the capacity from 1kWh to up to 3kWh by adding extra batteries, which is ideal for extended power needs. One downside is that the solar panel and power station ship separately, which might be inconvenient. The DELTA2 appears to be a solid option for those needing reliable, expandable, and efficient power solutions for off-grid living.