Electrical Panel Upgrade Cost Guide: 100A to 200A
When you actually need a panel upgrade, what permits and utility coordination cost, and how to spot inflated quotes.
Upgrading a home's electrical panel from 100 amps to 200 amps typically runs $2,400–$4,800 nationally. It's a project that triggers permits, utility coordination, and a power shutoff — none of which DIY can handle.
Do you actually need 200 amps?
Most homes built before 1980 have 100-amp panels, which were adequate for an era before electric ranges, central AC, EV chargers, and induction cooktops. Adding any two of those to a 100-amp service usually maxes the panel.
An electrician will perform a load calculation using NEC Article 220 to confirm. If you're under 80% utilization on a typical winter evening, you can usually add one major load without upgrading.
What the cost includes
The new panel itself is $400–$900. Labor for the swap runs 8–14 hours of licensed electrician time. The utility company has to disconnect and reconnect the service drop — often free, but with a 1–3 week scheduling lag. Permits and final inspection add $150–$400.
Older homes frequently need a new meter base, weatherhead, and grounding electrode at the same time, which can push the total to $5,000+. Always ask for a line-item quote.
Red flags in quotes
Be wary of quotes that don't mention pulling a permit, that propose 'just swapping the panel' without checking your service entry conductors, or that don't include any allowance for utility coordination. Unpermitted electrical work creates real insurance and resale problems down the line.