Can You Change a 100-Amp Electrical Panel to a 200-Amp?

If your home still runs on a 100-amp electrical panel, you’re not alone—many older homes in Nevada and across the U.S. were built with 100-amp systems. But as technology evolves and energy needs grow, more homeowners are choosing to upgrade to 200-amp panels for better safety, reliability, and future flexibility.

So, can you make the switch? Yes—and in many cases, you should. Here’s what you need to know.

Why Upgrade From 100 Amps to 200 Amps?

A 100-amp panel may still be functional, but it was designed for a different era—before homes had air conditioning, hot tubs, home offices, or EV chargers. Today’s homes typically need more power to safely run all the appliances and electronics we depend on.

Upgrading to 200 amps provides:

More capacity for appliances and modern electrical systems
Room for additional circuits (ideal for remodels, additions, or garages)
Improved safety with newer, more reliable breaker technology
Code compliance if you're renovating or selling your home
Support for future upgrades like solar panels or EV charging stations

If you’re constantly tripping breakers or planning a remodel, a panel upgrade isn’t just a luxury—it’s often a necessity.

When a 200-Amp Upgrade Makes Sense

You should consider a 200-amp panel if:

Your current 100-amp panel is more than 25–30 years old
You’re adding high-demand appliances like electric ovens, HVAC, or water heaters
You’re planning a home expansion, accessory dwelling unit (ADU), or garage conversion
You’re installing a Level 2 EV charger
Your panel is out of space and can’t support new circuits
You’re upgrading from a fuse box or outdated panel (like a Federal Pacific or Zinsco)

What’s Involved in the Upgrade?

Upgrading from 100 amps to 200 amps isn’t a quick swap—it’s a major electrical service upgrade that requires permits, inspections, and coordination with your utility provider.

Here’s what the process typically includes:

Inspection of existing system to determine if an upgrade is necessary
Load calculation to ensure 200 amps is appropriate
Permits pulled from your local building authority
Installation of a new panel with updated breakers and increased capacity
Upgraded wiring or grounding if needed
Utility coordination to connect the new panel to the grid
Final inspection to confirm code compliance

Important: This job must be performed by a licensed electrician. It’s not a DIY project due to the complexity, safety risk, and legal requirements involved.

The Bottom Line

Yes—you can absolutely upgrade a 100-amp electrical panel to a 200-amp panel. In fact, if you want to modernize your home, prepare for future technology, or improve overall safety, it’s one of the best upgrades you can make.

Need a Panel Upgrade? Let’s Get It Done Right

At Have Lights Will Travel, we specialize in residential panel upgrades across Nevada and Northern California. We’ll walk you through the process, handle the permitting, and install your new system safely and efficiently—so you can power your home with confidence.