10 Best Portable Solar Generators 2025 in the United States

The EF ECOFLOW DELTA 3 is a powerful and versatile portable solar generator with a 1024Wh LiFePO4 battery, offering a robust capacity that suits home backup, camping, and RV use. One standout feature is its incredibly fast charging capability—thanks to its 500W solar input combined with 1500W AC input, it can reach a full charge in just 56 minutes, and 80% in 30 minutes, which is much quicker than many competitors. It supports solar panels (sold separately) and integrates smoothly with EcoFlow's battery expansion system, allowing you to increase capacity up to 5kWh if needed, making it adaptable for longer power needs.

The unit delivers a strong 1800W continuous output (2200W surge with X-Boost), powering up to 13 devices simultaneously, which is great for running multiple appliances during outages or outdoor activities. Durability is another strong point, with a lithium iron phosphate battery rated for around 4000 charge cycles and a 10-year lifespan, plus a rugged IP65-rated battery pack resistant to dust, splashes, and oil.

The DELTA 3 weighs about 27.5 pounds, which is somewhat heavy compared to smaller models, so it's more suited for those who prioritize power and reliability over ultra-light portability. Solar panels are optional extras, so the total investment might be higher if you want a full solar setup. This generator represents an excellent choice for users needing fast recharge times, expandable capacity, and durable build, particularly for reliable backup power or extended outdoor adventures.

The EF ECOFLOW Solar Generator DELTA Pro with a 400W Portable Solar Panel stands out with its ultra-powerful 3600Wh battery capacity, making it a robust option for home backup, camping, or emergencies. It offers a substantial 3600W AC output, with an impressive 4500W peak using x-boost technology, allowing it to power various household appliances. This makes it suitable for users requiring reliable power during outages or outdoor activities.

The generator has a variety of 15 output ports, including 5 AC outlets, USB ports, and DC ports, providing versatility in charging and powering multiple devices simultaneously. The solar panel boasts a high conversion rate of 22.4%, ensuring efficient energy capture even in less than ideal weather conditions. It can fully recharge the generator in as little as 3.5 hours when using three panels, or 11 hours with a single panel, though the latter can be a lengthy wait in urgent situations.

One of the considerable advantages is its durability and portability. Weighing 99 pounds, the DELTA Pro is relatively heavy, but the 400W solar panel is more manageable at 35.3 pounds and is foldable and water-resistant, making it a practical choice for outdoor use. The smart app control feature adds convenience, allowing users to monitor and adjust settings from afar via Wi-Fi or Bluetooth. The charging time of up to 1.8 hours with a 240V outlet is quick, but the wall outlet charging time of 2.7 hours might be slower for some users' needs. Despite these drawbacks, the EF ECOFLOW DELTA Pro is a feature-rich, powerful, and efficient solar generator suitable for a wide range of residential and outdoor applications.

The Jackery Solar Generator 1000 v2 is a strong choice if you’re looking for a reliable and efficient portable power source for camping, emergency backup, or off-grid living. It offers a large 1,070Wh LiFePO4 battery, which means it can power many household essentials for hours. The standout feature is its fast charging capability—going from empty to full in about 1 hour using the included 2 x 100W solar panels or AC power. This is much quicker than many other portable solar generators. You get a good range of output ports, including 3 AC outlets and USB-C fast charging, which lets you charge multiple devices at once without needing extra adapters.

Weighing just under 24 pounds with a compact design and ergonomic handle, it’s reasonably portable, but still a bit heavy compared to smaller units. The solar panels are foldable and lightweight, making them easy to carry along. The build quality is solid, featuring UL certification for safety and a durable ABS case designed to handle outdoor use. The system’s smart app control lets you monitor and customize charging, adding convenience.

On the downside, while the 1,500W power output can handle most home devices, it might be too much or too heavy if you only need a small power supply. Also, the solar panels and generator are shipped separately, so setup might take a bit longer. This model suits those who want quick charging, longer battery life, and versatility in a portable generator but are okay with carrying a bit more weight for these benefits.