Sizing calculator
Check off the appliances you need during an outage. Get running watts, starting (surge) watts, and a recommended standby generator size with sensible headroom.
Size my generator →Home generators, measured properly
Most generator buying advice is a sales rep's rule of thumb. Start instead with your actual loads, then match them against manufacturer specifications, installed costs, and fuel consumption — in that order.
Model database
Searchable, sortable specs for real models: output on natural gas, propane, and gasoline, fuel burn at half and full load, noise, and typical street price.
Compare models →Cost guide
What a standby generator actually costs installed — equipment, pad, transfer switch, permits, and labor — and where quotes tend to pad.
Read the cost guide →Fuel & runtime guide
How long a propane tank or natural gas line keeps you running, what fuel burn at partial load really looks like, and how to plan for multi-day outages.
Read the fuel guide →How the pieces fit together
Run the sizing calculator first — it sets the size class you are shopping in. Then filter the model database to that size and compare fuel consumption and noise, the two specs that decide what the generator costs you every day it runs. The cost guide turns a shortlist into a budget, and the fuel & runtime guide tells you whether your fuel supply matches your outage plan.