10 Best Solar Backup Generators 2025 in the United States

The Jackery Solar Generator 1000 v2 is designed to be a powerful yet highly portable solution for those needing reliable power in various settings, like outdoor adventures or emergency situations. With a robust 1,500W AC output and a 3,000W surge peak, it’s capable of running multiple devices simultaneously, including demanding appliances like fridges and electric pots. Its battery capacity of 1,070Wh is substantial, providing ample power for extended periods.

Weighing just 23.8 lbs and featuring a foldable handle, it's easy to transport, making it ideal for outdoor enthusiasts or those living off-grid. The 200W solar panel compatibility ensures that you can recharge it sustainably, adding to its versatility for off-grid use. The inclusion of various charging options, including fast USB-C and multiple AC ports, means you can power a wide range of devices. The one-hour fast charging feature is particularly impressive, though it requires enabling the emergency charging function in the app each time.

Durability is a strong point with its LFP battery, designed to last over 10 years with a high cycle life. However, the need to use the Jackery App for certain features might be a drawback for those not keen on relying on apps for device management. Additionally, the separate shipping of the generator and solar panel could be a minor inconvenience. The Jackery Solar Generator 1000 v2 stands out for its powerful performance, portability, and durability, making it a solid choice for users needing a reliable and versatile power source.

The EF ECOFLOW DELTA Pro Ultra is a powerful solar backup generator designed primarily for home use, emergency situations, and large outdoor setups like RVs or camping. Its standout feature is a large 6144Wh battery capacity, which can be expanded significantly up to 90kWh by linking multiple units—enough to keep essential home devices running for days or even weeks. With a strong 7200W continuous power output and the ability to triple that for very heavy-duty appliances, it easily supports things like central air conditioners and other large household equipment. The inverter supports both 120V and 240V, offering flexibility depending on your power needs.

Charging options are versatile and convenient: you can recharge the battery via solar panels, wall outlets, electric vehicle chargers, or even traditional generators. Notably, it charges very quickly—within 2 hours for a full charge—which is faster than many similar products. The built-in app lets you prioritize home circuits, helping to extend backup time and manage energy use smartly, which also helps reduce electricity bills when combined with solar input. The unit is designed with durability and quiet operation in mind, including a 0-ms transfer time to protect sensitive electronics during outages and a silent mode for low loads.

The product is quite heavy at nearly 183 pounds, which may limit portability despite its intended home and recreational uses. Also, it arrives in separate packages, so setup might take some time. This generator suits users looking for a robust, expandable, and smart home backup power solution who don't mind the weight and complexity involved.

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.