Home backup power stations: what size do you need?

Affiliate disclosure: BLUETTI is an affiliate partner through the Awin network. Product links below are Awin tracking links and may earn a commission at no extra cost to you. We have not hands-on tested these units; specs and prices are summarized from bluettipower.com as of November 5, 2026. See our affiliate disclosure.

Last reviewed: November 5, 2026.

A portable power station is a big rechargeable battery with built-in AC outlets, USB ports and (usually) a solar charge controller. You plug critical loads into it during an outage—no generator fuel, no exhaust indoors—or, with the right transfer switch and kits, you feed selected house circuits. This guide covers how to size one, what Wh and W actually mean, when UPS-speed switchover matters, plug-in vs panel tie-in, solar recharge and LiFePO4 chemistry, then groups eight BLUETTI picks by budget, essentials and whole-home use.

Safety first: never backfeed a wall outlet with a power station (“suicide cord”). That can kill utility workers and destroy equipment. Plug-in backup means plugging appliances into the station. Any connection to your electrical panel needs a proper transfer switch or listed hub kit and a licensed electrician. This guide is not electrical advice.

Wh vs W: capacity vs power

Two numbers decide whether a station fits your outage plan:

• Watts (W): how hard the station can push at once—the continuous inverter output. A fridge that draws 150 W while running still needs a surge headroom for the compressor start (often 2–3× running watts). If the load (or surge) exceeds the station’s watt rating, it shuts off or won’t start the load.
• Watt-hours (Wh): how much energy is stored. Rough rule: runtime hours ≈ usable Wh ÷ average watts. A 1,000 Wh station running a steady 100 W load lasts about 8–10 hours after inverter losses, not a full 10 hours from the sticker.

Buy for both. Undersizing watts means the fridge never starts. Undersizing Wh means it runs for an hour and dies. Expandable models add battery modules later; check which batteries your unit supports before you plan around expansion.

Typical home loads to size against

Use a kill-a-watt meter or the nameplate when you can. These ballpark figures help you sketch a list:

• Wi-Fi router + modem: often 10–30 W combined. A small UPS-class station can keep them up for a day or more. See our shorter router / internet backup guide.
• Laptop (charging): roughly 45–100 W while charging; much less once topped off.
• CPAP (no humidifier): commonly 30–60 W. With heated humidifier and hose, plan higher—check your machine’s label.
• Refrigerator / freezer: 100–200 W running, with higher start surge. Duty cycle matters: the compressor isn’t on 100% of the time, so overnight Wh use is often lower than max watts × hours.
• LED lights / phone charging: a few watts to tens of watts—cheap to keep on the same station as the router.
• Sump pump: often 500–1,000+ W while running, with a hard start. Needs both high continuous watts and enough Wh for repeated cycles during a storm. Confirm your pump’s FLA/LRA on the plate.
• Well pump: frequently ½–1½ HP on 240 V, with large surge. Many portable stations are 120 V only; 240 V well pumps usually need a 120V/240V-capable unit (or a generator / dedicated well solution) plus correct transfer equipment. Do not guess—read the pump nameplate and talk to an electrician.

Write down every device you care about in an outage, add their running watts, note the worst surge, then pick a station whose continuous (and surge) watts clear that list with margin. Sum Wh needs from how many hours you want to ride through without sun or grid recharge.

UPS switchover: why milliseconds matter

Some stations advertise UPS (uninterruptible power supply) or EPS modes with switchover in the 0–10 ms range. That matters for:

• Routers, modems and network gear that reboot if power dips
• Desktop PCs and NAS boxes
• Some medical devices (confirm with the device maker; a consumer power station is not a medical UPS)

A fridge or lamp does not care about a half-second blink. If your goal is “internet stays up when the lights flicker,” prioritize a model with a stated fast UPS/EPS time and keep the networking gear plugged into the station before the outage so it is already on the battery path.

Plug-in backup vs transfer switch / panel kits

• Plug-in (most homeowners start here): charge the station from a wall outlet, then during an outage plug fridge, CPAP, lamps and router into the station’s outlets. No panel work. Keep cords clear of water and don’t overload a single AC outlet on the station.
• Transfer switch or manufacturer hub / home integration kits: selected house circuits can be fed from a large station (or stacked system) without extension cords. This is real electrical work: interlock or transfer equipment, correct wire, and often a permit. BLUETTI’s higher-end Apex line is aimed at this path with transfer switch / hub kits—still hire a licensed electrician and follow the manufacturer’s listed instructions and local code.

A portable station is not a whole-house standby generator. Central HVAC, electric ranges and large well pumps often exceed what even a big station can run, or need 240 V and dedicated circuits. Size for your critical list, not the entire service panel.

Solar recharge and LiFePO4

Most modern stations use LiFePO4 (lithium iron phosphate) cells: longer cycle life and a more stable chemistry than older NMC packs, at the cost of a bit more weight for the same Wh. Pairing a station with a foldable solar panel lets you top up during multi-day outages if you have sun and a safe place to deploy the panel. Match the panel’s voltage/current to the station’s PV input limits; more watts of panel usually means faster recharge, up to the station’s max solar input.

Grid charging overnight is still the everyday plan. Solar is the outage extender, not a reason to undersize the battery.

BLUETTI picks by budget, essentials and whole-home

Eight products from the BLUETTI lineup, plus the store home for current kits and bundles. Prices are from bluettipower.com as of November 5, 2026 and change often—as of Nov 2026, check current price on the live page before you buy. We have not hands-on tested these units.

Budget / small loads

1. BLUETTI Elite 30 mini — about $249.99, 288 Wh / 300 W, with <10 ms UPS. Built for router, modem, laptop and phone backup on a desk or shelf. Not for fridges or pumps. Full router-focused notes in our internet backup guide.
2. BLUETTI SORA 60W solar panel — about $129. A compact 60 W foldable panel to trickle-charge a small station when the grid is down. Pair it with the Elite 30 mini for daytime top-ups; confirm PV input compatibility on your station’s spec sheet.

Essentials backup (fridge, CPAP, lights — plug-in)

3. BLUETTI AC180 — about $499, 1,152 Wh / 1,800 W, LiFePO4. A straightforward plug-in essentials pick: fridge, lights, CPAP and chargers without any panel work. Good first “keep food cold” station if you stay on extension-cord backup.
4. BLUETTI Elite 100 V2 — about $499, 1,024 Wh / 1,800 W, with 10 ms UPS. Similar capacity class to the AC180, with faster UPS-style switchover for mixed networking + small-appliance use. Choose this when blink-free handoff matters as much as Wh.

Larger home / expandable / 240 V path

5. BLUETTI AC200L — about $899, 2,048 Wh / 2,400 W, expandable up to 8,192 Wh with compatible batteries. More runtime for a fridge plus other essentials, and a path to grow capacity later without replacing the inverter box.
6. BLUETTI Elite 300 — about $1,199, 3,014 Wh / 2,400 W, 10 ms UPS, TT-30 RV outlet. High capacity with UPS behavior and an RV-friendly 30 A outlet—useful for RVs, travel trailers or a TT-30 inlet setup. Still confirm inlet wiring with a qualified electrician.
7. BLUETTI Apex 300 — about $1,499 (list $1,699), 2,764.8 Wh / 3,840 W, 120 V + 240 V, 0 ms UPS, expandable, with home panel integration via transfer switch / hub kits. The whole-home-oriented pick in this list: higher output, split-phase capable, and designed to work with listed transfer/hub kits. Panel integration is electrician territory—budget the kit, permit and labor on top of the station price.

Browse the full catalog and current bundles on the BLUETTI store home. All eight picks are also listed under Products → Home Backup Power (BLUETTI).

BLUETTI links above are affiliate links via Awin. Prices noted as of Nov 2026—check the current price on bluettipower.com before buying. Specs are the manufacturer’s; we have not lab-tested runtime.

Where this fits in the house

Power stations cover outages; they don’t stop surges. Pair backup planning with a whole-house surge protector. Garage access during an outage is a separate problem—see the garage door opener with battery backup guide. Driveway lighting without grid power is covered in the solar motion security light guide. For a focused Wi-Fi-only setup, use the router / internet backup guide.

Bottom line

List your critical loads, size watts for the hardest start and Wh for the hours you need, then decide plug-in vs transfer-switch. For internet-only, the Elite 30 mini (with optional SORA 60 panel) is enough. For fridge and essentials without panel work, the AC180 or Elite 100 V2 around $499 are the practical middle. For longer runtime or expansion, step to the AC200L or Elite 300. For 240 V and listed home integration, the Apex 300—with a licensed electrician—is the path in this lineup.

Sources

• BLUETTI (bluettipower.com) product pages for Elite 30 mini, SORA 60, AC180, Elite 100 V2, AC200L, Elite 300 and Apex 300 (specs and prices checked November 5, 2026)
• Manufacturer documentation on UPS/EPS switchover times, LiFePO4 cycle life and PV input limits (as published on the product pages above)

Information only; not electrical, medical or emergency-planning advice. Follow the manufacturer’s manuals. Hire a licensed electrician for any panel, transfer switch, inlet or 240 V work, and confirm medical-device power requirements with the device maker.