The Power shelf is backup electricity for a house: keeping the fridge cold, the lights on, the phones charged, and the medical device in the spare room running through an outage. Most “solar generator” marketing is aimed at campsites. This shelf judges the same machines by a stricter test — your refrigerator, overnight, in August.
What belongs on this shelf?
- Portable power stations — the battery boxes with outlets, sized from 300 watt-hours up to whole-home class.
- Solar panels to feed them — folding panels and rigid panels, and the honest math on what a panel actually harvests in a day.
- Expansion batteries and transfer options — the step from “a battery” to “the circuits that matter, wired in.”
- The small stuff — headlamps, lanterns, battery banks, and radios. The first night of an outage runs on these, not on the big battery.
What actually matters when you buy?
Watt-hours, and what eats them. A fridge uses roughly 1,000–1,500 watt-hours a day. A 1,000-watt-hour station that sounds huge runs it for well under a day. Our comparisons size every machine against a standard fridge-plus-lights-plus-phones load so the numbers mean the same thing across brands.
Battery chemistry. LiFePO4 batteries last roughly three to four times as many charge cycles as the older lithium type and handle heat better. At home-backup prices, cycle life is the difference between a tool and a toy.
Recharge speed — from the wall and from the sun. An outage battery that takes two days of sunshine to refill is a one-night answer. We check AC charging watts as carefully as solar input, and we cap solar expectations at what panels realistically make (about three quarters of the nameplate, in decent sun).
The common mistakes
- Buying by “watts” alone. Watts say what it can run at once; watt-hours say for how long. Confusing them is the most expensive mistake on this shelf.
- Planning to run the whole house. Air conditioning and electric stoves eat a home battery in hours. Back up the circuits that matter.
- No way to recharge. If the outage outlasts the battery, the plan ends. Panels or a rotation to a generator belong in the same purchase.
Start with the numbers
The home power sizer lets you check off what has to keep running — fridge, freezer, lights, CPAP, router — and tells you the battery size class that covers it and what a station you’re eyeing would actually deliver. Backup power for the fridge is week three of the first-month guide.
Scored comparisons on this shelf
Best solar generators for home backup compared — four 2 kWh-class stations judged by the fridge test. The Bluetti Elite 200 V2 (86/100) leads on output and battery lifespan, the EcoFlow DELTA 2 Max (85/100) is a close second with the fastest recharge, the Jackery Explorer 2000 v2 (83/100) is the cheapest way in, and the Bluetti AC200L (82/100) scores well but was not on Amazon at the last check.