Electrical panel upgrade costs vary largely based on amperage size. Most homes fall into one of three categories: 100-amp, 200-amp, or 400-amp service.
This page explains electrical panel upgrade cost per amp, what each panel size supports, and when larger upgrades are required.
Average Electrical Panel Upgrade Cost by Amperage
Typical installed cost ranges:
- 100-amp panel upgrade: $1,200–$2,500
- 200-amp panel upgrade: $2,000–$4,500
- 400-amp panel upgrade: $4,000–$8,500+
The jump from 100A to 200A is the most common and usually the most cost-effective upgrade for modern homes.
100-Amp Electrical Panel Cost
100-amp panels are commonly found in older homes with limited electrical demand.
Typical uses:
- Small homes
- Minimal appliances
- No central HVAC
- No EV charger
Limitations:
- Insufficient for modern appliances
- Often fails inspections during renovations
- Limited expansion capacity
Many homeowners upgrade from 100A to 200A when remodeling or adding major systems.
200-Amp Electrical Panel Cost
200-amp service is the modern standard for most residential homes.
Typical uses:
- Central HVAC systems
- Modern kitchens
- Electric dryers and water heaters
- EV chargers (Level 2)
- Solar system readiness
This upgrade offers the best balance between cost, capacity, and long-term flexibility.
400-Amp Electrical Panel Cost
400-amp service is typically installed in:
- Large homes
- Multi-unit properties
- Homes with multiple EV chargers
- High electrical load setups
- Homes with workshops or extensive electric heating
These upgrades often require:
- Utility coordination
- Larger service lines
- Additional equipment
- Higher permit and labor costs
400-amp upgrades are uncommon but sometimes necessary for high-demand properties.
What Affects Cost Beyond Amperage
Even within the same amperage level, costs vary based on:
- Distance to utility connection
- Trenching requirements
- Meter upgrades
- Local code requirements
- Labor rates
- Existing wiring condition
Older homes often require additional work beyond the panel itself.
Do You Need a Service Upgrade or Just a Panel Replacement?
In some cases:
- The panel is upgraded
- But service amperage remains the same
In others:
- Both panel and service capacity must increase
Utility involvement is usually required when increasing amperage beyond the existing service size.
Which Panel Size Is Right for Most Homes?
- 100A: rarely sufficient today
- 200A: best choice for most homeowners
- 400A: only for high-load properties
Installing a larger panel than currently needed can reduce future upgrade costs.
Related Electrical Cost Guides
For additional comparisons, see: