About BackupAtlas
BackupAtlas is a reference for home backup power in the United States. It helps homeowners compare portable, inverter, and standby generators using the loads they actually need to run, the fuels they can store or connect, and the safe connection their home requires.
The site currently tracks 86 generators across 12 brands. Specifications are curated from manufacturer documentation and retain a link to the source. Our calculators turn those ratings into practical estimates for starting surge, 120/240 V requirements, fuel use, runtime, and operating cost.
What you'll find here
- A sourced generator directory with comparable specifications.
- Head-to-head comparisons between models.
- A load-based sizing calculator and fuel-cost tools.
- Buying, connection, and safety guides written for homeowners.
How the site is made
Generator specification pages, comparison pages, and use-case rankings are generated from the dataset by templates; guides and glossary entries are written and reviewed by people. The methodology page documents the data pipeline — including how records are curated and what the verification flag means — and every formula, and the editorial policy explains how content is produced and corrected.
BackupAtlas is independently operated. No manufacturer pays for placement, and a product is not ranked more highly because it has an affiliate relationship — rankings are computed from published specifications alone. The site may earn affiliate commissions on some outbound links; see the affiliate disclosure. Planning estimates never replace an appliance nameplate, a generator manual, local code, or a licensed electrician's load and connection assessment.
The Atlas Network
BackupAtlas is part of the independently operated Atlas Network of source-backed product references. For large loads that often affect backup-power planning, see ChargerAtlas for home EV charging and HotWaterAtlas for water-heater specifications and sizing. HomeHubAtlas covers smart-home compatibility. Each site has its own dataset, methodology, and editorial scope.
Generator specifications are curated from manufacturer documentation; BackupAtlas is not affiliated with or endorsed by any generator manufacturer. Found an error? Contact us.