Blackout guide

Solar generators for blackouts: what they actually do

Updated October 2026 · 7-minute read

A "solar generator" isn't a generator at all. It's a portable power station (a big battery with outlets) plus solar panels that refill it. No fuel, no fumes, no noise — but also no magic. Here's the honest version of what that combo can and can't do in a blackout.

What you're actually buying

Two separate pieces, usually sold separately (bundles exist but check what's inside):

1. The power station — the battery + inverter + outlets. This is what powers your devices. Its capacity (watt-hours) decides how much energy you have; its inverter (watts) decides what you can plug in. See our sizing guide and under-$1,000 roundup.
2. The solar panels — portable folding panels (typically 100–400W each) that refill the station during the day. They're a slow fuel hose, not a power plant.

Panels don't run your house directly in any meaningful sense — they trickle energy back into the battery while the sun is up, and you spend it at night. Think refill, not real-time power.

The recharge math nobody shows you

Advertised recharge times assume perfect lab conditions: panel flat at the ideal angle, cold clear day, sun directly overhead. Real life gives you roughly 70–80% of a panel's rated watts in good sun, less with clouds, haze, heat, or a bad angle. The honest formula:

For a typical 1,000Wh station:

Assumes panels kept in direct sun and re-angled through the day. Cloudy weather can easily double these times or worse. We haven't lab-tested these figures — they're the standard derating math, and your mileage will vary.

Realistic blackout expectations

The pattern that actually works in a multi-day outage:

• Day: panels refill the station while you run only essentials (fridge, phones).
• Night: you spend the stored energy (lights, CPAP, router, fridge cycling).

A useful rule of thumb: a fridge realistically consumes 500–700Wh per day (it cycles on and off — see our sizing guide). About 400W of panels in decent sun roughly offsets that daily draw. So a 1,000Wh station + 400W of panels can plausibly keep a fridge going indefinitely in good weather — but add a CPAP, laptops, and lights, and the math gets tight fast.

What size panel do you need?

• Short outages (under a day): skip panels entirely. A charged station alone is simpler and cheaper — just keep it topped up.
• Multi-day outages: 200–400W of panels per 1,000Wh of station is the practical range. More panel is almost always more useful than a bigger battery you can't refill.
• Check the station's max solar input before buying panels — every model caps how many solar watts it accepts, and exceeding the voltage limit can damage it. The spec sheet lists both.

Many stations can charge from a wall outlet and solar at the same time (useful before a storm: top up fast from the grid, then maintain with solar). Confirm it on your model's spec page — it's not universal.

Safety notes

• Never plug a power station into a wall outlet to "backfeed" your home's wiring. It's dangerous and illegal in most places. Extension cords to individual devices only.
• Portable panels are light and catch wind — secure them, especially on balconies or roofs.
• Keep the station dry and ventilated while charging; don't leave panels connected in a lightning storm.

Where to look

All four major brands sell stations and matching panels on their own sites (bundles are often discounted vs. buying separately — compare the bundle price against the two pieces individually before assuming it's a deal):

Check current price — Jackery Check price on Amazon — Jackery Check current price — EcoFlow Check price on Amazon — EcoFlow Check current price — BLUETTI Check current price — Anker SOLIX Check price on Amazon — Anker SOLIX

Plain links to the brands' official stores — no affiliate codes added yet. Prices change constantly; always confirm at checkout.