Your home’s electrical panel controls how much total power can flow in from the grid and how it’s distributed to circuits throughout the house. Most homes built before 2000 have 100-amp or 150-amp service. Adding a Level 2 EV charger, solar inverter, or home battery can push you past that capacity, at which point upgrading to 200 amps (or higher) is required.
The work involves replacing the main panel and usually the meter socket, and it requires a permit and Duke Energy sign-off before reconnection. It sounds more disruptive than it typically is: most panel upgrades are completed in a single day. Not every installation requires one. If your panel already has 200-amp service and open breaker slots, you may be able to add a charger with no upgrade at all. A licensed electrician can assess this in about 15 minutes.
When you’re getting quotes
Before accepting a quote that includes a panel upgrade, ask the electrician to walk you through why it’s needed. Some upgrades are genuinely required; others are added by default. Key questions: What is my current service size? How many open breaker slots do I have? Could a load management device let me avoid the upgrade? A good electrician will answer all three before recommending the more expensive route.
Common questions
- How much does a panel upgrade cost in North Carolina?
- Panel upgrades in Raleigh and Charlotte typically cost $1,500–$3,500 depending on the service size, panel brand, meter base condition, and whether the utility service entrance needs work. Going from 100-amp to 200-amp service is the most common job. Costs are higher if the meter base or service entrance wiring needs replacing, which Duke Energy sometimes requires before reconnection.
- Do I need a panel upgrade to add an EV charger in Raleigh or Charlotte?
- Not necessarily. Many homes already have 200-amp service with available breaker slots, in which case an EV charger circuit can be added without touching the panel. Ask your electrician to run a load calculation first. If your panel is 100 amps or is already heavily loaded, an upgrade is likely needed. Some situations can be handled with a load management device instead of a full upgrade — worth asking about.
- How long does a panel upgrade take in NC?
- Most panel upgrades are completed in a single day. Work requires a brief power outage while the panel is swapped. Duke Energy coordinates to disconnect and reconnect service at the meter, which adds some scheduling time. The full process — permit, inspection, Duke coordination — typically takes one to two weeks from booking to a live upgraded panel.