How to compare backup power quotes
Get at least 3 quotes for the same scope. Then compare them line by line, not just the bottom line.
Step 1: put prices on the same unit
For batteries, use price ÷ usable kWh (benchmark: $1,130–$1,159/kWh, EnergySage, as of 2026-10-25). For generators, compare the kW rating and the total installed price (benchmark: $8,000–$16,000, Generac, as of 2026-10-26).
Step 2: check the scope line by line
Look at backed-up circuits, transfer equipment, panel upgrade, gas or trenching, pad, permit and inspection, and removal of debris.
Step 3: check what protects you
Look at the license number, the equipment and labor warranties, the payment schedule, and the timeline.
Unsure what size to ask for? Run the calculator first, so every installer quotes the same load.
See also: Powerwall cost · standby generator cost · red flags
Get installer quotes → · Size your backup first with the calculator →
FAQ
How many quotes should I get for a home battery or generator?
Three is a common rule of thumb. Ask each installer for the same scope so you can compare.
What is a fair price per kWh for a home battery?
EnergySage reports $1,130–$1,159 per kWh installed (checked 2026-10-25).