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Electrical Panel Upgrade · Missouri
A panel upgrade replaces your breaker panel, and often the service entrance, so the home can safely carry more load: an EV charger, heat pump, induction range or addition. It always needs a permit, and usually needs the utility to disconnect and reconnect power.
Kansas City and St. Louis have large pre-1950 housing stocks; spring storms add surge and outage calls.
Across the Midwest, homes deal with cold winters, severe thunderstorms and tornado season. Permit offices, utilities and housing stock differ by city, which affects how electrical panel upgrade is planned and scheduled. These local guides cover the Missouri cities where we have written specific notes.
Kansas City's Brookside, Waldo, Hyde Park and Northeast neighborhoods hold many homes from the early 1900s to the 1940s with 60 or 100 amp services that cannot handle central air, a heat pump, an EV charger or a basement finish. Some mid-century homes have panel brands electricians suggest replacing.
Utility: Evergy
Many St. Louis city homes still have 60 amp services or fuse panels in the basement, sized long before central air, which nearly every home now wants in a humid Missouri summer. Two-family flats often have two small services side by side.
Utility: Ameren Missouri
Older Columbia homes near campus often have 60 or 100 amp services, and mid-century homes may have panels with no room left. Adding central air, a heat pump, an EV charger or more circuits for a rental usually requires an upgrade.
Utility: Columbia Water and Light (city-owned; outlying areas: Boone Electric Cooperative)
1. Load calculation
The electrician sizes the service from your existing and planned loads.
2. Permit and utility coordination
The permit is pulled and the utility schedules disconnect and reconnect.
3. Install the panel and service parts
New panel, breakers, grounding and bonding, and service conductors or meter base if needed.
4. Inspection
The local inspector checks the work before or after power is restored, depending on the jurisdiction.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Kansas City: Electrical permits in Kansas City, Missouri, come from the City Planning and Development Department; suburbs on both sides of the state line run their own building departments. Saint Louis: Inside the city, electrical permits come from the City of St. Louis Building Division; St. Louis County and its municipalities issue their own. Columbia: Electrical permits inside city limits come from the City of Columbia's building and site development division, and the city licenses electrical contractors.
Kansas City: Evergy. Saint Louis: Ameren Missouri. Columbia: Columbia Water and Light (city-owned; outlying areas: Boone Electric Cooperative).
If you have 100 amps or less and are adding an EV charger, heat pump or electric range, or your panel is a Federal Pacific, Zinsco or fuse box, ask an electrician for a load calculation.
Usually most of one working day, depending on the scope and how quickly the utility reconnects.
Yes, in essentially every US jurisdiction. The electrician pulls it and schedules the inspection.
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