Best Solar Generators for Home Backup

A solar generator generates nothing. It is a battery, an inverter and a solar charge controller in one box — and the name stuck because the thing it replaces is a gas generator. Once you see it that way, choosing one gets much simpler, because a battery is described completely by two numbers.

Continuous inverter watts decide whether it can run your load at all. Usable watt-hours decide for how long. Every other spec on the box is a tiebreaker.

This page ranks the current units by the job each one is actually the right answer for. Specs are manufacturer-published figures only — no prices, because prices are perishable, and no runtime claims that aren't arithmetic from published ratings.

Start with the load list, not the product

The most common expensive mistake in this category is buying capacity when the problem was inverter output — a 2 kWh battery that can't start a sump pump is worth less in an outage than a 1 kWh one that can.

Write down what you actually need to run, then check two things against it:

1. Does the continuous inverter rating exceed the sum of the running watts? Motor loads — refrigerator compressors, sump pumps, furnace blowers, well pumps — also draw a starting surge several times their running draw, which is why surge rating is quoted separately.
2. Do the watt-hours cover the hours you need? Divide usable capacity by average draw. A refrigerator averaging 150 W runs about 6.7 hours per kilowatt-hour.

The generator sizing calculator does the first calculation from a real appliance list, and the runtime calculator does the second. Do both before reading any further — the answer usually eliminates most of this page.

How the current units compare

Best overall for home backup: EcoFlow DELTA Pro 3

The unit that changed what a battery can be asked to do. Four kilowatt-hours, 4,000 watts of continuous output, and — the spec that matters — split-phase 120/240 V with an L14-30 outlet. That means it connects to a transfer switch exactly the way a portable gas generator does, and backs up circuits rather than devices.

It is also the only unit here that is UL 9540 certified and expandable into a genuine whole-home system. The honest caveat is that at 113 lb and its price class, you are comparing it against a standby generator install — so compare it against that properly, including the gas line, the pad, the permit and the annual service, not just the sticker.

If your outage plan involves the electrical panel, start here. If it involves extension cords, keep reading — you can spend far less.

Best first purchase: Jackery Explorer 1000 v2

A kilowatt-hour and a 1,500-watt inverter is the combination that covers the loads people actually miss in an outage: the refrigerator, the phones, the lights, a CPAP. Twenty-four pounds means it moves one-handed, and the LiFePO4 pack is rated 4,000 cycles.

This is the category's reference point, and for most households the correct amount of machine. Buy bigger only after your own load list says so.

Best battery longevity: Bluetti Elite 200 V2

Two kilowatt-hours, a 2,600-watt inverter, and a 6,000-cycle rating — the best published battery spec on this page, roughly double some competitors.

Cycle life is the spec that decides whether you keep a unit or replace it, and it is the one buyers routinely ignore in favour of headline capacity. If home backup means the fridge, the furnace blower on an extension cord and the internet — not whole circuits — this covers it for years of regular cycling.

Best expansion path: Jackery Explorer 2000 Plus

Choose this over the Bluetti when the roadmap matters rather than today's spec sheet. The base unit is 2 kWh with a 3,000-watt inverter — the strongest in its class — and it grows to 12 kWh per unit, or 24 kWh and 240 V when paired with Jackery's transfer switch.

As a standalone box the Bluetti's cycle life wins. As a platform you can grow into a split-phase system, this does.

Best solar recharging: Goal Zero Yeti 1000

If solar is the plan rather than an accessory, the spec to buy for is solar input, and no other 1 kWh unit accepts 900 watts of panel.

That input rating is what turns a finite battery into a multi-day one: enough panel to replace what you drew during the day means the outage length stops mattering. Goal Zero also offers a real transfer-switch path at this capacity, which is unusual. If you will only ever wall-charge it, the premium buys you less.

Best UPS behavior: Anker SOLIX C1000 Gen 2

Ten-millisecond switchover on every AC port, a 2,000-watt inverter from a 25 lb box, and a full recharge in 49 minutes.

That switchover figure is what makes it a legitimate uninterruptible supply for a desktop, a network rack or a home lab, not just an outage battery. Anker publishes less spec detail than its peers — confirm outlet count and warranty terms at purchase.

Best value: Bluetti AC180

Frequently the cheapest real 1 kWh / 1,800-watt combination on the market, with a five-year warranty at the value price point.

The trade is weight — 35 lb against the Jackery's 24 — and a 3,500-cycle rating that trails its own stablemate's 6,000. Bluetti's discount cycles make this the best watt-hours-per-dollar buy in the class several times a year.

Best small unit: EcoFlow RIVER 3 Plus

Ten pounds, 286 Wh, a 600-watt inverter and sub-10 ms switchover.

Be clear about what this is: 286 Wh runs a refrigerator for roughly 90 minutes. It is not an outage machine. What it is very good at is keeping the router, the modem and a laptop alive through short interruptions, going camping, and teaching you your real capacity needs before you spend four figures on a guess.

The specs worth comparing, and the ones that aren't

Chemistry and cycle life — compare these first. LiFePO4 (LFP) is now standard and rated for thousands of cycles. Older NMC units held more energy per pound but degraded far faster. The published cycle-life number, and the capacity percentage it is measured to (70% vs 80% matters), is the real durability spec.

Continuous vs surge output. Continuous is the number that has to exceed your running load. Surge is a brief rating for motor starts. Some units publish a "lifting" or "boost" mode that only applies to resistive loads — a space heater, not a compressor. Read which one you are being sold.

UPS switchover time. Only matters if you are running something that reboots. Under 20 ms covers most electronics; under 10 ms covers essentially everything.

Solar input ceiling. The spec that decides whether the unit can be recharged faster than you drain it. See charging a power station with solar panels for why real output lands around 70–80% of a panel array's rating.

Capacity headline numbers, in isolation. A big battery behind a small inverter cannot run the loads you bought it for.

Where a battery still loses to gas

Honesty about the limit: a battery holds a fixed amount of energy. A gas generator makes power for as long as you keep feeding it. In a multi-day winter outage with no sun, the gas machine wins and it is not close — which is the whole argument in solar generator vs gas generator.

What the battery wins on is everything around the outage: no fuel to store or stabilize, no carbon monoxide risk, no noise, no maintenance schedule, indoor operation, and it is useful the other 360 days of the year. For most households in most outages, that trade is worth making — and for households where it is not, the answer is a standby generator, not a bigger battery.

Where to go next

• Size it properly: generator sizing calculator
• Check the runtime math: generator runtime calculator
• Solar generator vs gas generator
• Charging a power station with solar panels
• Battery backup vs generator
• Full write-ups on every unit: best portable power stations

More in our generator and backup power guides.