Straight answers
What size generator do I need for a 2000 sq ft home?
Generator size is based on which circuits or appliances you want to run during an outage (whole-house vs partial-house), not square footage alone. A 2000 sq ft home might need a smaller kW unit if you only back up lights, fridge, and internet, or a larger unit if you want air conditioning, electric cooking, or EV charging—an electrician completes a load analysis and matches the generator to your transfer switch and utility rules.
Square footage is only a starting point
Two homes of the same size can have very different electrical profiles: gas vs electric heat, heat pumps, tankless electric water heaters, and pool equipment all change generator requirements.
Whole-house vs essential-circuit backup
Managed whole-house systems can stagger large loads. Essential-circuit panels back up only selected breakers and often allow a smaller generator with lower fuel consumption.
Professional installation
Standby generators require proper grounding and bonding, transfer equipment, and often utility coordination. See home standby generators.
This page is for general education and does not replace advice from your Authority Having Jurisdiction or a site-specific electrical assessment. ARC Electric is licensed in California (CSLB #1079430) and serves Milpitas, CA 95035, and Santa Clara County.