How much does it cost to go from 100amp to 200amp service?

Going from 100 amp to 200 amp service typically costs 1,800 to 4,500 dollars in the US. That covers a new panel, breakers, meter socket work, permit, and inspection.

The wide range is the service conductors. If the utility's line and your service entrance cable both need upsizing, or the run is underground, the bill climbs fast.

Most upgrades take a licensed electrician one day, plus utility scheduling for the disconnect and reconnect. No rewiring of branch circuits is needed; existing circuits land in the new panel.

Quotes above this range usually mean extras like a mast replacement, trenching, or bringing grounding up to current code.

The conductor side is fixed by code: see the 200 amp wire size calculator for the copper and aluminum sizes a 200 amp service needs.