Electrical Panel Upgrade: Complete Guide for Utah Homes

Your electrical panel handles all the power flowing into your home. If it's undersized, outdated, or unsafe, upgrading is not optional—it's a safety and practical necessity. Modern homes with electric vehicles, heat pumps, air conditioning, and home offices often need larger panels than homes built 20+ years ago.

Panel Capacity Basics—Electrical service in homes is measured in amps. 100-amp service was standard for homes built before 2000. Modern homes typically have 150-amp or 200-amp service. The difference: a 100-amp panel can supply limited simultaneous loads; a 200-amp panel supports more circuits running at once without overloading.

When You Need an Upgrade—Your panel is undersized if your main breaker trips repeatedly, adding new circuits is difficult or impossible, you're frequently using extension cords, you're planning to install an EV charger (requires a 30-60A dedicated circuit), you're installing a heat pump (significant electrical load), or you're adding central AC to an existing furnace system.

From 100A to 200A: The Full Picture—The cost of upgrading from 100A to 200A service includes removing the old 100A panel, installing a new 200A panel and breakers, upgrading the meter base (the socket where the meter sits), potentially upgrading the main service lines from the street, coordinating with Rocky Mountain Power for a meter disconnect and reconnect, and obtaining permits from your local authority.

Costs in Utah—A 100A to 200A panel upgrade typically runs $3,000-$6,000 depending on accessibility, existing wiring condition, and whether service lines need upgrading. If utility lines need upgrading (common for older homes), add $500-$2,000. Permits cost $150-$400. Total budget: $3,500-$8,000. It's a significant investment but necessary for modern electrical safety.

Federal Pacific and Zinsco Panels—If your home has a Federal Pacific Stab-Lok or Zinsco panel (common in pre-1990 Utah homes), replace it regardless of amp capacity. These panels have documented safety failures where breakers don't trip during overloads, causing fire risk. Insurance companies may refuse coverage if you have these panels. Replacement is essential.

Permits and Inspections—Never skip permits for electrical work. Unpermitted electrical work: voids warranty, creates liability if someone is injured, fails home inspections when selling, causes insurance claim denials, and is illegal. A licensed electrician handles permitting and gets final inspection approval.

Timeline—Most panel upgrades take 1-2 days for installation. The utility company schedules the meter disconnect and reconnect, which may add 1-2 weeks. Plan for this extended timeline if you're waiting for utility coordination.

EV Charger and Heat Pump Preparation—If you're planning an EV charger or heat pump installation, upgrade your panel now before installing those systems. An EV Level 2 charger requires a 40-60A dedicated circuit; a heat pump adds a 20-40A load. Undersized panels can't support both safely.

If your panel is 100A, you're likely undersized for modern demands. Schedule a panel assessment and load evaluation to determine if an upgrade is necessary for your home's future.