10 Best Solar Backup Generators 2025 in the United States

The EF ECOFLOW Solar Generator DELTA Pro features a robust 3600Wh battery capacity, making it a substantial choice for home backup, camping, RVs, and emergencies. Its power output reaches up to 3600W with the ability to boost up to 4500W, ensuring that it can handle a range of household appliances and electronic devices. The generator includes 15 versatile outlets, including 5 AC outlets and multiple USB ports, which can cater to various charging needs simultaneously.

The inclusion of a 400W portable solar panel is a significant advantage, providing efficient solar charging even under less than ideal weather conditions. The panel's 22.4% conversion rate is quite efficient in the solar panel market. With single or multiple panel setups, recharging times range from 3.5 to 11 hours depending on the configuration used, offering flexibility in charging options.

Portability is somewhat balanced, with the solar panel being foldable and easy to carry at 35.3 lbs, while the main unit weighs 99 lbs, which might be cumbersome for some users to move around frequently. The build quality is notable with an IP68 waterproof rating, ensuring durability in various environments. However, the generator and solar panel are shipped separately, which could be inconvenient if timing is critical. The smart app control feature adds modern convenience, allowing users to monitor and control the generator remotely via Wi-Fi or Bluetooth. This solar generator is an excellent choice for those needing reliable and versatile backup power, although the weight of the main unit could be a consideration for portability.

The EF ECOFLOW Solar Generator DELTA2 with 220W Solar Panel is a reliable and versatile option for those needing backup power for home, camping, or RV trips. With a substantial battery capacity of 1024 watt-hours and a power output of 1800 watts, it can handle most household and outdoor appliances. The included 220W bifacial solar panel enhances energy capture by up to 25%, making it efficient for off-grid use. One standout feature is its durability, with the LFP battery offering a lifespan of over 3000 cycles, ensuring long-term use.

Fast charging capabilities mean the generator can be recharged quickly, which is a major plus for emergencies or frequent usage. Portability is decent, although at 58 pounds, it might be a bit heavy for some users to carry around easily. The device is highly versatile, with 15 different outlets and the ability to expand capacity from 1kWh to 3kWh by adding extra batteries.

However, its bulkiness and weight might be drawbacks for those looking for a more compact and lightweight solution. Additionally, while it offers numerous charging options (AC, car, solar), the initial setup might seem complex for some users. Nevertheless, for anyone needing a robust and efficient solar generator, this model, with its solid build quality and extensive features, is definitely worth considering.

The Jackery Solar Generator 5000 Plus is a powerful and versatile solar-backup generator, perfect for home use and emergency situations. One of its standout features is its impressive battery capacity, offering 5040Wh, which is expandable up to 60kWh. This means it can power a whole home for over a day on a single charge, and potentially up to 15 days with maximum expansion.

The generator's power output is equally robust, with a 7200W AC output, making it capable of running heavy-duty equipment such as dryers, water pumps, and ovens, as well as everyday devices. It is equipped with dual voltage outputs (120V/240V), enhancing its versatility for various applications, including recharging RVs during travel. The inclusion of two 500W solar panels ensures it is highly compatible with solar energy, offering a clean and quiet alternative to traditional diesel generators.

The generator has a 0ms UPS mode that instantly switches to stored power during blackouts, ensuring critical devices remain operational without interruption. Moreover, the smart app control feature allows real-time monitoring and control via WiFi or Bluetooth, which is convenient for modern users. Despite its high capacity and output, the generator remains relatively quiet, operating at under 30dB. However, its large capacity and power output make it less portable compared to smaller models, and its weight is likely on the heavier side. Additionally, the price point may be a considerable investment for some users. Its high durability, expansive capacity options, and eco-friendly operation make it a strong candidate for those needing a reliable and powerful home backup solution or emergency power source.