Backup Generator
A standby or portable engine-driven generator that produces electricity during power outages, typically fueled by natural gas, propane, or gasoline. Rated in watts (e.g. 7,500W portable, 22,000W whole-home).
Why It Matters
Generators provide unlimited runtime (with fuel) but require ventilation, fuel storage, and maintenance. Battery systems are quieter and cleaner but have limited capacity.
Related Tools
Related Terms
Whole-Home Backup
A battery system sized to power an entire home during a grid outage, as opposed to backing up only essential/critical loads. Typically requires 2-4 batteries (30-50+ kWh).
Microgrid
A localized energy system that can operate connected to the main grid or independently (islanded). Typically includes generation (solar), storage (batteries), and load management.
Battery Storage
A system that stores excess solar energy for use when the sun isn't shining, providing backup power during outages.