Keep Your Lights On When the Power Goes Out
Find the right generator size for your home—and see what it'll cost—in under 2 minutes.
We'll show costs for your area
How It Works
Get your personalized recommendation in 3 simple steps
Tell Us About Your Home
Zip code, home size, and what appliances matter most to you.
Get Your Recommendation
We calculate the right generator size and show you real cost estimates.
Connect When Ready
Review your results. Get quotes from local installers only if you want to.
See Exactly What You Need
Your results include everything to make an informed decision
Generator Sizing Calculator
Answer a few quick questions to get started
This helps us estimate costs in your area.
Your information stays private. We never share without permission.
Why Homeowners Use Our Calculator
No pushy sales calls
Get your recommendation first. Connect with installers only when you're ready—or not at all.
Accurate cost estimates
Our estimates are based on real installation data, not inflated numbers to upsell you.
Right-sized recommendations
We won't oversell you. The 16kW your home actually needs beats the 24kW you don't.
Common Questions
How much does a whole-house generator cost?
Most whole-house generators cost $8,000–$25,000 installed, depending on size and location. A typical 22kW unit runs $12,000–$18,000 including installation. Our calculator gives you a personalized estimate.
What size generator do I need?
It depends on what you want to power. Essential circuits (fridge, lights, outlets) typically need 10–15kW. Whole-home coverage including central AC usually requires 20–25kW or more.
Is this calculator really free?
Yes, completely free for homeowners. We're supported by installers who pay for leads—but only when you choose to connect with them. No obligation.
Who are you?
We're an independent resource helping homeowners make informed decisions about backup power. We're not affiliated with any generator manufacturer—we compare all major brands.