10 Best Solar Backup Generators 2026 in the United States

The EF ECOFLOW DELTA 2 solar generator is a solid choice for those seeking a clean, quiet backup power source for home, camping, or RV use. Its 1024Wh LFP (LiFePO4) battery offers a long lifespan with over 3000 charge cycles, meaning you can rely on it for years without much battery wear. The 1800W power output can handle most household appliances and tools, making it comparable to traditional gas generators but without the noise or fumes. It comes with a 160W solar panel that’s optimized to capture energy efficiently, letting you recharge faster in sunny conditions. Plus, the unit supports expanding battery capacity up to 3kWh if you need more power over time.

With 15 outlets, it offers versatile options to connect various devices at once. On the portability side, it weighs about 17.6 kilograms (nearly 39 pounds), which is reasonable but might be a bit heavy for frequent carrying over long distances. The built-in inverter and battery management system ensure stable power delivery and safety during use. Charging can be done via solar panel, AC power, or car adapter, giving flexibility based on your situation.

Though it is a bit pricey compared to smaller models, the durability, fast charging, and multiple power outputs justify the cost for users needing reliable off-grid or emergency power. This unit fits well for campers, RV owners, or homeowners wanting a green and quiet alternative to gas generators.

The Jackery Solar Generator 1000 v2 is a solid choice for those seeking reliable portable solar power, especially for camping, RV use, or emergency backup. Its 1070Wh LiFePO4 battery offers a long lifespan and retains most capacity even after thousands of charges, which is excellent for long-term use. Power-wise, it delivers a strong 1500W continuous output with a 3000W surge, enough to run appliances like fridges and small AC units comfortably. The two included 100W flexible solar panels are lightweight and highly efficient, making charging outdoors faster and easier. Their bendability and IP68 rating mean they can handle rough weather and fit on curved surfaces, adding versatility.

Portability is a highlight, with the whole setup being relatively light and compact for its power level, which is great if you need to move it around often. Charging options are flexible too, with a fast 1-hour emergency recharge via AC when plugged in, as well as solar charging and USB ports to power multiple devices simultaneously. The built-in smart app control adds convenience by allowing users to monitor battery status and adjust settings remotely. It is important to note that the fast charging mode requires manual activation through the app each time, which some users may find slightly inconvenient.

While the unit is rugged and offers advanced features, the price point could be less appealing to casual users who do not require extended battery life or smart controls. This generator is well-suited for those who want a dependable, efficient, and weather-resistant solar backup with strong performance and modern smart controls.

The EF ECOFLOW DELTA 3 is a powerful and versatile portable solar backup generator designed for home backup, camping, and RV use. It features a substantial 1024Wh LiFePO4 battery, which is known for its long lifespan and durability—rated for about 4000 charge cycles and a 10-year daily use expectancy. This means it can last much longer than many other batteries on the market, making it a reliable long-term investment.

With an 1800W continuous power output and the ability to surge up to 2200W (3600W briefly with X-Boost), it can run up to 13 appliances at once, including high-demand devices. The inverter type is electronic, providing stable power suitable for sensitive electronics. The device supports fast charging including 500W solar input and a 1500W AC input, allowing a full charge in under an hour, which is excellent for quick turnaround during emergencies or outdoor trips.

Solar panel compatibility is good, though solar panels are sold separately. The system supports expansion up to 5kWh by adding extra batteries, giving users flexibility to increase capacity when needed. EcoFlow also emphasizes durability with an IP65 rating on the battery pack, protecting it from dust, splashes, and oil, which is beneficial for outdoor use.

Portability-wise, the unit weighs 27.5 pounds (about 12.5 kg) and has a compact design, making it manageable but not ultra-lightweight. It offers multiple charging options including AC wall, car, and solar charging, which adds to its convenience. One minor downside is that the solar panels are optional extras, so the cost can increase if you want a complete solar solution. Also, while the weight is reasonable for its capacity, it may not be the best choice if you need something very lightweight for backpacking.

The DELTA 3 is a robust, fast-charging solar generator with excellent battery life and power output suited well for home backup and outdoor activities where multiple devices need reliable power.