How to Choose a Power Station for Weather Outages

What a weather-outage station is on a listing

A portable power station for weather outages is a battery unit you keep charged and ready so that selected household essentials can run when the grid is down. On a listing, the seller may call this role 'Home Backup' or name the unit in a 'solar generator' bundle. Those are the seller's words; the useful details are the stated battery capacity, the continuous output, the battery type, the solar input, and whether the station is expandable or has UPS mode. This article explains those terms as they appear on listings and points to the guides that compare stated details.

The guides on this site compare stations on stated details and give no runtime figures. How long a station runs a device depends on the device and on what the maker's page states the model supports; you read that on the maker's page, not here. For outage shopping overall, start with the best portable power station for home backup guide, and compare broad picks in the best portable power station guide.

Reading capacity in watt-hours

Electricity is measured in watts, and one watt is a small amount of power; one watt-hour is the energy of using one watt for one hour, and 1,000 watt-hours is a kilowatt-hour. The EIA explains these units and reports that an average U.S. household uses about 10,500 kilowatt-hours of electricity per year. A portable station stores a fraction of that, and its capacity is stated in watt-hours (Wh) on the listing. The guides sort stations into stated capacity bands: best 1,000Wh, best 2,000Wh and best 5,000Wh.

Capacity tells you how much energy the station holds, not how fast it can deliver it. A station in the 1,000Wh band suits phones, a laptop and a few lights; the 2,000Wh band is where most outage shoppers compare stations for a refrigerator and small loads; the 5,000Wh band is for larger loads and longer outages. These are shopping bands, not runtime promises; this site gives no runtime.

'Expandable to' is the seller's maximum, not what ships. If a title states a capacity and also states 'expandable to' a larger number, the stated capacity is what ships, and the maker's page lists how extra batteries change the total.

Reading output in watts

Output is the second figure in a title and it is different from capacity. Capacity is stored energy in watt-hours; output is how much power the station can deliver continuously, in watts. A listing may also name a surge or peak figure, which is a short, higher output, and a maker may give it a feature name such as a power-lifting mode. This article does not say what a figure will run; that depends on the load and on the maker's page.

A title may also print 'pure sine wave', which describes the shape of the AC output as a listing word. The general difference is explained in pure sine wave versus modified sine, and the difference between a surge figure and a constant figure is in surge power versus constant.

Recharging with solar during an outage

For a long weather outage, a station that recharges from the sun lets you top up the battery without the grid. The EIA explains that the sun has produced energy for billions of years and that technologies capture solar radiation; on a listing, a station sold with one or more panels is often called a 'solar generator'. The panel figures in the title state what is in the box.

This site gives no charge time or solar input figures; the maker's page lists the solar input the model accepts and which panels it supports. To compare bundles, see best solar generators and read the maker's page for the bundle. The listing term for the panel connection is covered in what is max solar input.

Home rooftop solar is a different topic: the Department of Energy's homeowner guide covers roof suitability, shade, roof age and working with a solar professional. A portable station with panels is a separate shopping decision; the guides here compare stated details of station-and-panel bundles.

Expansion and UPS on a listing

Two listing words matter for outage shopping: 'expandable' and 'UPS'. An expandable station accepts extra batteries sold separately, so the stated capacity can grow; the title states the shipped capacity and the 'expandable to' maximum. How that reads is covered in expansion battery options.

UPS stands for uninterruptible power supply. On a listing it means the station can keep a connected device running through a brief grid drop so the device does not restart; the switchover time may appear in the title. For a home desk with a router, a modem, lights and a laptop, a station with UPS is the common choice, but this article makes no uptime promise; the maker's page states what the station supports. The comparison is in the stations with UPS guide.

Pass-through is a related listing word: it means the station can power a device while the station itself is charging. The maker's page lists whether a model supports pass-through and in what conditions.

A storm-season shopping checklist

Buying before storm season means comparing listings on stated details and reading the maker's page, not waiting for the outage. Use this checklist to read a listing:

• Capacity in watt-hours and the 'expandable to' maximum.
• Continuous output in watts and any surge or peak figure.
• Battery type, where LiFePO4 is the chemistry word you will see.
• Whether the station ships alone or bundled with solar panels.
• Whether the listing states UPS mode and pass-through.
• The owner's manual and the maker's page for storage, care and support.

What to pick for your situation

Questions

What is the difference between a watt and a watt-hour?

A watt measures power, and a watt-hour measures energy: one watt-hour is using one watt for one hour. The EIA explains that electricity is measured in watts and kilowatts and that home electricity use is reported in kilowatt-hours. On a listing, capacity is stated in watt-hours and output in watts.

How long will a power station run a refrigerator during an outage?

This article gives no runtime figures. How long a station runs a device depends on the device and on what the maker's page states the model supports; the maker's page is the place to read that. The guides here compare stations on stated details only.

Can I recharge a power station with solar during an outage?

A station sold with panels, often called a solar generator, accepts solar input when the sun is out; the maker's page lists the solar input a model accepts. This site gives no charge time figures.

Do I need an electrician to connect a power station to my home?

Anything that connects a station to a home, including a transfer switch, is decided by a licensed electrician, the maker and the local permit office. This article explains the terms only and gives no wiring steps.

What does 'expandable to' mean on a listing?

'Expandable to' is the seller's maximum capacity when extra batteries are added. The capacity stated in the title is what ships, and the maker's page lists the extra batteries and the total.

Is a solar generator the same as a power station?

On a listing, 'solar generator' is the seller's name for a power station sold with one or more solar panels. The useful details are still the stated capacity, output and battery type.