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Compare Backup Options

Compare standby generators, portable generators, and home batteries to see which type of backup power may fit your home.

Standby Generator: permanently installed backup power that starts automatically. Automatic operation, longer outages, natural gas or propane, professional installation. Best for automatic, longer-duration backup.
Portable Generator: a movable generator you set up and operate during an outage. Manual setup, selected loads, gasoline or propane, outdoor use. Best for lower-cost occasional backup.
Home Battery: stored electricity that can automatically power selected circuits or more of your home. Automatic operation, quiet operation, no on-site fuel, stored energy that works with solar. Best for quiet backup, shorter outages, and solar integration.

Standby Generator

Upfront cost
Higher
Automatic operation
Yes
Typical runtime
Days, with fuel supply
Fuel required
Natural gas or propane
Noise level
Moderate
Installation
Professional
Whole-home capability
Possible with larger units

Portable Generator

Upfront cost
Lower
Automatic operation
No (manual)
Typical runtime
Hours per tank
Fuel required
Gasoline or propane
Noise level
Moderate to loud
Installation
Simple setup
Whole-home capability
Rarely

Home Battery

Upfront cost
Higher
Automatic operation
Yes
Typical runtime
Hours, varies by load
Fuel required
None on site
Noise level
Quiet
Installation
Professional
Whole-home capability
Possible with multiple units

Calculate Your Generator Size

Estimate how much backup power capacity your home may need.

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Estimate Your Purchase & Installation Cost

Estimate equipment, installation, permits, fuel connection, and related setup costs.

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Estimate Fuel Cost During an Outage

Estimate natural gas or propane use and operating cost during an outage.

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Learn & Plan

Browse simple guides on how backup power works and what to plan for.

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