Man starting a portable generator outside

HomeServicesGenerator vs battery backup

Comparison

Generator vs Battery Backup

Next Phase Electric is a licensed and insured electrical contractor in Covington, WA, installing standby generators, portable generator hookups and transfer switches across South King and Pierce County.

Both keep the power on in an outage. They differ in how long they run, what they can power and what they cost.

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Licensed, Bonded & Insured♦15+ Years Experience♦2,500+ Homes Served♦5.0★ on Google♦Background-Checked Technicians ♦ Code-Compliant Work ♦ Upfront Pricing ♦ Same-Day Service Available ♦ Permit Pulling & Inspections ♦ Covington & Nearby Cities ♦ Licensed, Bonded & Insured♦15+ Years Experience♦2,500+ Homes Served♦5.0★ on Google♦Background-Checked Technicians ♦ Code-Compliant Work ♦ Upfront Pricing ♦ Same-Day Service Available ♦ Permit Pulling & Inspections ♦ Covington & Nearby Cities ♦

Compare

Side by Side

A standby generator and a home battery, compared.

	Standby generator	Home battery
Run time	As long as the fuel lasts. Natural gas does not run out like a tank.	Until the stored energy is used. Solar panels can recharge it during the day.
What it powers	The whole home or chosen circuits, including electric heat when sized for it.	Usually chosen circuits. Electric heat, a range or a well pump use it up quickly.
Switch-over	10 to 30 seconds after the power goes out.	Almost instant.
Noise	60 to 70 dB while running, about a normal conversation.	Silent.
Upkeep	Oil checks and a weekly self-test.	Very little.
Cost	Lower for the same amount of backup, plus fuel when it runs.	Higher for the same amount of backup, with no fuel to buy.

How to Choose

Which One Fits

Three common cases.

Long Outages

Winter windstorms here can cut power for days. A generator on natural gas or a large propane tank keeps running through them.

Short Outages

A battery covers short outages with no noise and no gap, which suits a home office.

Lowest Cost

A portable generator with an interlock kit and an inlet box is the lowest-cost legal backup for most homes.

How It Works

How You Get Your Price

The exact price comes upfront. You approve it before any work starts.

You Book

Online or by phone. A technician reaches out within 1 business hour.

We Check Your Home

We check your panel, fuel options and what you want to keep running.

You Get a Recommendation

A clear recommendation on type and size, with the exact price before any work.

Book an Assessment

FAQ

Common Questions

A generator. It runs as long as it has fuel, and natural gas does not run out like a tank. A battery runs until its stored energy is used, unless solar panels recharge it.

Only if it is sized for it, which usually means several battery units. Electric heat, a range, a dryer and a well pump are the big loads. Most battery systems back up chosen circuits.

For the same amount of backup, a battery usually costs more to install. A generator costs less up front and uses fuel when it runs. A portable generator with an interlock kit costs the least.

No. A battery can charge from the grid and hold that power for an outage. With solar panels it can recharge during a long outage.

A battery switches over almost instantly. A standby generator takes 10 to 30 seconds to start, so a CPAP or oxygen concentrator stops briefly. Tell us about any medical equipment so those circuits are on the backed-up list.

60 to 70 dB, about a normal conversation, and far quieter than a portable. We position it to keep the noise down for you and the neighbors.