Free guide

What size generator do I need?

Eight quick questions. One honest answer across all five backup power categories — battery booster, standby, portable gas, inverter, and portable solar — with the trade-offs spelled out.

Question 1 of up to 100 answered

What do you want to keep running?

Only the questions that matter for your situation get asked.

How the guide decides

Every answer nudges the five categories up or down — and hard limits disqualify a category outright. Say you won't refuel anything and gas options are out. Say you're away when outages hit and manual portables are out. Heavy 240V loads rule out small inverters. By question eight the remaining categories genuinely fit how you live, not just what you power.

Already know your circuits?

Skip the questions and go straight to the numbers with the generator sizing calculator or the battery size calculator. Comparing ownership vs. rental? The Minnesota backup power guide lays out all five categories side by side.