10 Best Portable Solar Generators 2026 in the United States

The EF ECOFLOW DELTA 2 portable solar generator is a solid choice for camping, RV use, or as a home backup power source. It comes with a 1024Wh Lithium Iron Phosphate (LFP) battery, which is known for lasting much longer than typical batteries—up to 3000 charge cycles—so it can reliably serve you for years. It pairs with two included 100W solar panels that have a good 23% conversion efficiency, allowing for relatively quick solar charging. Using two panels, it charges in about 5 hours, and even faster with a third panel if you add one.

This generator offers a strong 1800W continuous output (2700W surge), enough to power most small to medium appliances, and it supports up to 15 devices at once through multiple output ports. That variety is great for different needs while camping or during power outages. Weighing 27 pounds, it’s reasonably portable, though a bit heavier compared to smaller models, so it’s better suited for users who don’t need to carry it long distances on foot.

One standout feature is its expandable capacity—you can add extra batteries to boost storage up to 3kWh, which is useful if you need longer power supply without recharging frequently. The unit also charges quickly from AC power, helping you refill its battery fast when solar isn’t an option. The weight and size might be a bit bulky for some users looking for ultra-light gear, and the solar panels arrive separately, requiring some setup. While it’s built with a durable battery management system for safety and longevity, the generator is priced at a premium level reflecting its advanced features. In summary, the DELTA 2 is best for those who want a reliable, long-lasting solar generator with strong output and expandable options, and are okay with moderate weight and upfront setup.

The EF ECOFLOW Solar Generator DELTA Pro 3 stands out with its impressive 4096Wh battery capacity, which is expandable up to 48kWh, making it highly suitable for extended power outages, home use, and emergencies. Its compatibility with a 400W portable solar panel ensures that it can harness renewable energy efficiently. With a powerful 4000W AC output (scalable up to 12000W), it can power most home appliances, making it versatile for various uses including camping and RV trips.

The numerous charging methods, including solar panels, gas generators, and EV charging piles, add to its versatility and convenience, reducing dependency on fuel. Additionally, the EcoFlow app allows for easy remote monitoring and control, enhancing user experience. The ultra-fast 10 ms switch-over capability ensures a seamless power supply for sensitive devices, which is a significant advantage during power interruptions.

However, the generator's weight of 150 pounds affects its portability, making it less convenient to move around, especially for camping trips. The product's build quality is robust, thanks to automotive-grade LFP cells and IP65-rated battery technology, and it comes with a reassuring 5-year warranty. Despite its quiet operation at just 30 dB, the size and weight could be a drawback for those looking for a highly portable option. Ideal users would be homeowners seeking reliable backup power, campers with larger setup vehicles, and RV owners who can handle the weight. This generator is less suited for those who need a lightweight and easily portable solution.

The EF ECOFLOW Solar Generator DELTA 2 Max is a robust and versatile portable power solution, ideal for camping, RV trips, and even home power outages. Its battery capacity of 2048Wh and powerful 400W solar panel make it a strong contender in its category. The fast charging capabilities are impressive, allowing it to reach 80% charge in just 43 minutes using both solar and AC inputs, or in 1.1 hours with AC only. This makes it highly efficient for quick power-ups in various situations.

The inclusion of multiple output ports (15 outlets) means you can power almost any household device, and with the X-Boost mode, it can handle high-wattage appliances up to 3400W, adding to its versatility. The upgraded LFP battery offers a long lifespan with over 3000 charging cycles, which is significantly above industry averages, ensuring durability and cost-efficiency. The lightweight, waterproof solar panels are built to withstand outdoor conditions and are easily portable at 35.3 pounds.

However, the weight of the generator (86 pounds) may make it less convenient for frequent transportation. The smart app control adds convenience by allowing you to customize charging times and monitor the battery status, though it may require some initial setup and learning to use effectively. In terms of durability and build quality, the DELTA 2 Max is designed to endure rugged outdoor use, but its high price point might be a consideration for budget-conscious buyers. This portable solar generator is perfect for those looking for a reliable, fast-charging, and high-capacity power solution for both outdoor activities and emergency home use.