BACKUP POWER

Build a backup power system that fits the load

Start with watts and runtime. Then compare battery capacity, inverter output, charging speed, ports, and replacement options.

See our top picks Compare backup systems

Power is a system—not a single box.

CHOOSE BY THE JOB

What must stay powered?

Start with the failure that creates the greatest risk in your home. The right system follows from the load, the required runtime, and where it can safely operate.

REFRIGERATOR + FREEZER

Protect cold food first

Compare a quiet indoor battery bridge with a small inverter generator. Measure 24-hour energy and verify compressor startup before buying.

Build a refrigeration plan

CPAP + COMMUNICATIONS

Cover the quiet overnight loads

Size from measured overnight energy, humidifier use, networking equipment, lighting, and the number of nights you need.

Plan quiet indoor power

PUMPS + MOTOR LOADS

Plan for the startup surge

Sump pumps, well pumps, furnace blowers, and compressors can demand far more power at startup than while running.

Size a motor load

ESSENTIAL HOME CIRCUITS

Choose circuits before capacity

Prioritize refrigeration, water, heat, medical needs, and communications before pricing a transfer-ready or expandable system.

Plan essential circuits

THE THREE PRACTICAL SYSTEMS

Battery, generator, or a hybrid?

A battery is quiet and usable indoors but holds a finite amount of energy. A fuel generator supports longer outages but must operate safely outside. A hybrid lets the battery carry quiet overnight loads while the generator handles charging and heavier daytime work.

Compare all three with your load

Battery power station

Best for indoor essentials, apartments, short outages, quiet nights, and measured loads.

Calculate battery runtime

Fuel generator

Best for longer outages, pumps, larger simultaneous loads, and households with safe outdoor placement.

Calculate generator size

Hybrid backup

Best when a battery covers quiet hours and a generator or solar array restores energy on a schedule.

Compare the tradeoffs

SIZE FROM REAL DEMAND

The number that matters changes by load.

Watts determine whether equipment can run. Watt-hours determine how long a battery lasts. Voltage and startup surge can disqualify an otherwise large-looking system.

Essential load	Measure first	Likely starting path
Refrigerator	Measure kWh over 24 hours	Battery or inverter generator
CPAP	Measure one full night	Indoor battery power station
Sump pump	Running watts + startup surge	High-surge battery or generator
Well pump	Voltage + horsepower + surge	Usually a 120/240V-capable system
Gas-furnace blower	Running watts + motor start	Battery or inverter generator
Electric heat / range	Very high continuous load	Reduce the load or plan a large system

Safety belongs in the buying decision. Fuel-burning generators must stay outdoors, away from doors, windows, vents, and occupied structures. Household circuits require an approved transfer method—never backfeed an outlet.

TOP PICKS

Compare power stations and supporting gear by job.

Choose by the job you need done. Every pick includes the main reason it stands out and the tradeoff to check before ordering.

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.

POWEREasy portability

Jackery Explorer 1000 v2

A 1,070Wh battery and 1,500W AC output in a relatively light unit make it a sensible single-refrigerator starting point.

Before buying: It is not the pick for large simultaneous loads; confirm the refrigerator's startup surge and your required runtime.

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POWEROutput headroom

BLUETTI AC180

Its advertised 1,152Wh capacity, 1,800W AC output, 500W solar input, and LiFePO4 battery fit refrigerator backup well.

Before buying: At about 35 pounds it is less convenient to move than lighter 1kWh-class units.

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POWERLonger outages

EcoFlow DELTA 2 Max

The 2,048Wh base capacity, 2,400W AC output, expansion support, and high solar-input ceiling suit a refrigerator plus other essentials.

Before buying: The added capacity costs more and weighs about 51 pounds; it may be unnecessary for a short single-appliance plan.

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POWEREcoFlow ecosystem and variable ground reflection

EcoFlow 220W bifacial portable panel

Front and rear collection, folding construction, and matching cables simplify an EcoFlow setup.

Before buying: Bifacial gain depends on placement; weight and the case-based stand may not suit frequent moves.

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POWERFast portable deployment

Jackery SolarSaga 200W

Integrated stands and a brand-matched connection make it approachable for compatible Jackery stations.

Before buying: Confirm connector generation and the station's input limit before buying multiple panels.

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SOLAR POWERHigh output in the 2kWh class

EcoFlow DELTA 3 Max Plus

EcoFlow publishes a 2,048Wh battery, 3,000W AC output, and 6,000W surge, providing substantial inverter headroom for an essential-load system.

Before buying: High output can empty 2kWh quickly. Runtime still depends on watt-hours, and X-Boost is not a substitute for normal rated compatibility.

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SOLAR POWERBalanced portable home backup

BLUETTI Elite 200 V2

Its published 2,073.6Wh LiFePO4 battery and 2,600W output cover a useful middle ground for refrigeration, communications, lighting, and managed appliances.

Before buying: Confirm solar-input limits, transfer behavior, and whether the available ports match every planned load.

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SOLAR POWERSimple 2kWh setup

Jackery Explorer 2000 v2

Jackery publishes 2,042Wh, 2,200W output, and 20ms backup switching in a familiar portable format.

Before buying: A 20ms transfer is not equivalent to zero-interruption UPS performance for every device; verify sensitive equipment requirements.

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SOLAR POWERExpandable 120/240V home system

Anker SOLIX F3800

A 3.84kWh base battery, 6,000W output, 120/240V support, and expansion options put it in a larger home-backup category.

Before buying: Home integration, expansion batteries, and enough solar to refill the system raise the total project cost and complexity.

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BUYING BASICS

Know what matters before checkout.

Power stations

Best for quiet indoor backup, short outages, apartments, and smaller essential loads. Capacity is measured in watt-hours; output is measured in watts.

Solar charging

Panel ratings are lab maximums. Plan around fewer real-world watts and enough daylight to recharge while also powering your load.

Before you buy

Add every running watt, identify the largest startup surge, and decide how many hours the system must cover. Our calculator makes this quick.

DETAILED GUIDES

Check battery watt-hours, usable efficiency, refrigerator daily energy, compressor startup surge, and recharge speed before buying.

Read the guide