Skip to content

Your Privacy Choices

Battery storage vs. generators​​​​

Explore your options for home energy protection during outages

Published February 9, 2026

Battery storage vs. generators

Protect your home when the grid fails. Choose the old way (a generator) or the modern way (a battery). This isn't just about backup; it's about picking the most reliable, convenient, and high-value solution for your family.

Sold by Sunrun

Solar storage

Benefits

  • Provides home back-up
  • Automatic start-up
  • Silent noise level
  • Recharges with the sun
  • 25 year life span*
  • $0 upfront cost*
  • Multiple batteries can be installed for increased backup duration

Drawbacks

  • May need multiple batteries to match the backup capacity of a standby generator

Standby generator

  • Provides home back-up
  • Automatic start-up
  • Supports large loads for extended timespans

Drawbacks

  • Moderate noise level
  • Powered by natural gas or propane
  • Large, often placed in visible, inconvenient locations
  • Often require professional servicing
  • Average equipment and installation cost of $4,000-14,000+ †

Portable Generator

  • Keeps select lights on in an outage
  • Portable
  • Low-cost option

Drawbacks

  • Moderate to loud noise level
  • Often powered by natural gas or propane
  • Limited load capacity
  • Requires refueling
  • Must be kept a safe distance outside of home
  • Requires manual start-up

Home batteries vs. generators

We have your backup

Explore your options for home energy protection during outages

Battery storage vs. generators

When it comes to powering your home during outages, it’s important to look at all the options

Sold by Sunrun

Solar storage

Benefits

  • Provides home back-up
  • Automatic start-up
  • Virtually silent noise level
  • Recharges with the sun
  • 25 year life span*
  • $0 to little upfront cost*
  • Additional batteries can be installed for increased backup protection

Drawbacks

  • May need multiple batteries to match the backup capacity of a standby generator

Standby generator

Benefits

  • Provides home back-up
  • Automatic start-up
  • Supports large loads for extended timespans

Drawbacks

  • Moderate noise level
  • Powered by natural gas or propane
  • Large, often placed in visible, inconvenient locations
  • Often require professional servicing
  • Average equipment and installation cost of $4,000-14,000+ †