Home Backup Power Options: Every Choice Compared, From Power Banks to Whole-Home Systems

“Backup power” covers everything from a $30 power bank to a $15,000 standby generator. Most people overspend or underspend because they shop by product before they know what job they need done.

This guide is the map. It lays out every main home backup power option in order of size, what each one realistically powers, roughly what it costs, and the safety rules that come with it. Where we quote prices or facts, we link the source. Anything else is labelled general guidance.

Quick answer (general guidance): Write down what you must keep running and how long your outages usually last. Short outages and small loads (phones, lights, router, CPAP): power banks or a portable power station. Fridge and a few circuits for a day or two: a larger power station, ideally with solar panels and a transfer switch. Whole home for days: a standby generator, or a home battery system paired with solar.

Step zero: define the job

Before comparing products, answer two questions:

1. What must keep running? Phones, lights, internet, fridge, freezer, medical devices, sump pump, well pump, heating controls, cooling.
2. How long are your outages? A few hours, a day, or several days after storms?

Our power outage preparation checklist walks you through building that must-run list. Keep it next to you as you read; it decides almost everything below.

A useful rule of thumb (general guidance): power (watts) tells you what you can run at once, and energy (watt-hours or kWh) tells you how long. Runtime ≈ usable watt-hours ÷ average watts drawn. A device rated 1,000 Wh running loads that average 100 W lasts roughly 8–9 hours after conversion losses.

The options, smallest to largest

Option	Good for	Rough cost (general guidance unless sourced)	Noise / fumes	Needs electrician?
USB power banks + battery lights	Phones, lanterns, small fans	Tens of dollars	Silent, none	No
Portable power station (≈250–3,000 Wh)	Router, laptop, CPAP, a fridge for hours	Hundreds to a few thousand dollars	Silent (fan hum), none	No, unless connected to wiring
Solar generator (power station + panels)	Same, but rechargeable in long outages	Station plus panels	Silent, none	No, unless connected to wiring
Power-station home kit + transfer switch	Selected home circuits	“just under $4,000” to about $4,100 for examples tested by Popular Mechanics	Silent	Yes
Portable gas / dual-fuel generator	Fridge, freezer, sump pump, tools	Hundreds to low thousands	Loud, deadly exhaust	Only to connect to wiring
Home battery system	Essential or whole-home circuits, automatic	$10,000–$20,000 (Duke Energy)	Silent	Yes
Standby generator	Whole home, long outages, automatic	$7,000–$15,000 installed (Duke Energy)	Moderate, outdoor exhaust	Yes

Now the detail on each.

1. Power banks, battery lights and small kit

The cheapest, most overlooked tier. A couple of charged USB power banks, LED lanterns and a battery or crank radio cover the basics of most short outages: light, communication and news.

Ready.gov recommends having flashlights and alternate power sources for devices that need charging, and specifically advises against using candles because of fire risk. That’s the floor everyone should reach before spending on anything bigger.

Best for: everyone, renters, short outages. Limits: won’t run a fridge, heating or anything with a motor.

2. Portable power stations

A portable power station is a big rechargeable battery with built-in AC outlets, USB ports and an inverter. You charge it from the wall (or a car or solar panels) and plug appliances straight in. Modern units increasingly use LiFePO4 (lithium iron phosphate) cells, which are generally rated for many more charge cycles than older lithium-ion chemistries — check each model’s spec sheet for the actual cycle rating.

What they can realistically do (general guidance):

• Small (≈250–700 Wh): router, phones, laptop, LED lights, often a CPAP overnight depending on settings and humidifier use.
• Mid (≈1,000–2,000 Wh): add a fridge for part of a day. Fridges cycle on and off, so their average draw is far below the label’s peak.
• Large (≈3,000 Wh+, often expandable): a fridge plus essentials for a day or more, and some models support home connection kits.

They’re silent, produce no fumes and can be used indoors, which is why they’re the go-to for apartments. Our guide to backup power for apartments and renters covers sizing, CPAP tips and building rules in depth.

Best for: renters, medical devices, short-to-medium outages, anyone who can’t run a generator outdoors. Limits: finite energy; heavy loads like electric heaters, ovens and central air drain them fast.

3. Solar generators

“Solar generator” is mostly a marketing name for a portable power station sold with folding solar panels. The battery is the same; the panels let you recharge when the grid is down.

That matters for multi-day outages: without solar or fuel, a battery can’t refill until power returns. Real-world solar harvest depends heavily on panel wattage, weather, season, latitude and angle, so treat a panel’s rated watts as a best-case peak, not a typical hourly output.

Best for: people in sunny regions with occasional long outages, off-grid cabins, those who want zero fuel storage. Limits: cloudy weeks and winter can cut charging sharply.

4. Power-station home kits with a transfer switch

Several brands now sell large power stations with a dedicated transfer switch or home panel so you can power selected house circuits — your fridge, furnace blower, lights and outlets — instead of running extension cords.

Popular Mechanics lists the Jackery Explorer 5000 Plus with its Smart Transfer Switch at “just under $4,000” and the BLUETTI Apex 300 Home Integration Kit at $4,099, noting limits like the Jackery switch’s 12 circuits and the Apex 300’s roughly 2.7 kW output. That’s far below a full home battery system, but it covers essentials, not your whole house.

Connecting anything to home wiring needs proper transfer equipment and a licensed electrician. See how to connect a power station to your house safely and our comparison of interlock kits vs transfer switches.

Best for: homeowners who want circuits backed up quietly without five-figure costs. Limits: usually can’t run central air or electric ranges; installation adds cost.

5. Portable generators (gas, propane, dual-fuel, inverter)

Portable generators deliver the most power per dollar and run as long as you have fuel. Inverter models are quieter and produce cleaner power for electronics; conventional open-frame models are cheaper and louder.

They are also the most dangerous option when misused. The U.S. Consumer Product Safety Commission warns that portable generator exhaust contains carbon monoxide that can kill in minutes, and that generators should only be used outside, at least 20 feet from the home, with exhaust directed away from windows, doors and vents — never in a home, garage, basement, crawlspace or shed, even with doors open. Install battery-powered CO alarms inside regardless.

Never plug a generator into a wall outlet (“backfeeding”). It can energise utility lines and injure line workers or neighbours. Use extension cords rated for the load, or a transfer switch or listed interlock fitted by an electrician.

Best for: homeowners with outdoor space, longer outages, heavy loads like sump or well pumps. Limits: noise, fuel storage and rotation, maintenance, CO risk; often not allowed in apartments.

6. Home battery systems

A home battery is a permanently installed battery bank wired into your panel, usually with automatic switchover. It charges from the grid and/or solar and can cover essential loads or, with enough capacity, a whole home.

Duke Energy quotes $10,000–$20,000 for typical systems and describes them as typically maintenance-free, but warns that a battery stores limited energy — “sometimes as little as a few hours” for heavy loads — and can’t refill during an outage without solar.

Wondering whether one makes sense if you don’t have panels? Read is a home battery worth it without solar?

Best for: quiet automatic backup, homes with solar, places with time-of-use electricity rates. Limits: high upfront cost; limited runtime in long outages without solar.

7. Standby generators

A standby generator sits outside on a pad, runs on natural gas or propane and starts automatically through an automatic transfer switch. It’s the classic whole-home solution for long outages.

Duke Energy puts typical installed cost at $7,000–$15,000 and lifespan at 25–40 years depending on use, with regular maintenance such as oil and filter changes. Angi notes they can run continuously for extended periods with sufficient fuel.

For a full cost comparison, read home battery vs generator: the real costs.

Best for: multi-day outages, whole-home coverage including central air, well pumps. Limits: cost, permits, maintenance, noise; needs gas line or propane tank.

How to choose: a simple decision path (general guidance)

1. Renting or no outdoor space? Power banks plus a portable power station. Add solar panels if outages run long.
2. Own your home, outages are short (under a day), budget is modest? A mid-to-large power station; add a transfer switch later for selected circuits.
3. Own your home, outages run for days, sump/well pump or medical needs? A portable generator with a properly installed inlet and transfer switch, or a standby generator if budget allows.
4. Have solar, or want silent automatic backup? A home battery system or a power-station home kit.
5. Want whole-home including central air through long outages? Standby generator, or a large battery bank plus solar.

Many households end up with layers: power banks for phones, a power station for the fridge and router, and a generator or solar for long events. Layers add resilience — if one fails, you aren’t in the dark.

Safety rules that apply to every option

• No backfeeding. Only connect to home wiring through a transfer switch or listed interlock installed by a licensed electrician.
• Generators outdoors only, far from openings, with CO alarms inside (CPSC).
• Use correctly rated cords. Undersized extension cords overheat.
• Test before you need it. Run your setup for an hour every few months, and test medical devices on backup power.
• Store fuel and batteries properly, following the manufacturer’s instructions.

Bottom line

There is no single “best” home backup power option — only the right one for your must-run list, outage length, home and budget. Start small and safe, then scale up: power banks and lights for everyone, a power station for essentials, and a generator or home battery when your outages and budget justify it.

Next step: download our free power outage checklist and fill in your must-run list. The right option usually becomes obvious once it’s on paper.

This article is general information, not professional advice. Electrical work on your home should be carried out by a licensed electrician in line with local codes.

Frequently asked questions

What is the cheapest home backup power option?

For phones, lights and Wi-Fi, USB power banks and battery lanterns are the cheapest option. For a fridge or CPAP, a portable power station is usually the cheapest safe step up. Portable gas generators deliver the most power per dollar but must only run outdoors, far from windows and doors.

What is the best backup power option for a whole house?

For whole-home coverage through long outages, a professionally installed standby generator is usually the most practical. Duke Energy puts typical installed costs at $7,000 to $15,000. Home battery systems ($10,000 to $20,000 per Duke Energy) suit shorter outages, especially with solar.

Can I use a backup power source without an electrician?

Yes, if you plug appliances directly into the device with suitable extension cords. Connecting any backup source to your home wiring needs a transfer switch or listed interlock installed by a licensed electrician to prevent dangerous backfeed.

Is a solar generator the same as a power station?

Mostly. A 'solar generator' is usually a portable power station sold with solar panels. The battery unit is the same; the panels let you recharge it during a long outage when the grid is down.