Your electrical panel handles everything from lighting to EV chargers—and older panels weren't designed for modern demand. If your home still runs a 100-amp service or you're tripping breakers constantly, an upgrade isn't optional; it's a safety and practicality issue.
Why Your Panel Might Need Upgrading
Most homes built before 2000 have 100-amp or 150-amp panels. That was fine when kitchens had one appliance running at a time, but today's homes demand more: heat pumps, electric ranges, Tesla chargers, and whole-home audio systems all draw serious amperage simultaneously.
Common warning signs include:
- Flickering lights when the HVAC or oven kicks on
- Breakers tripping for no apparent reason
- A panel that's hot to the touch
- Rust, corrosion, or visible burn marks on the panel box
- An insurance company asking you to upgrade as a policy condition
- Planning a major renovation that requires new circuits
A 200-amp or 300-amp service is now the standard for new construction and modern upgrades. If you're adding a heat pump, upgrading to induction cooking, or installing EV charging, your electrician will likely recommend stepping up from 100 amps.
What's Actually Involved in an Upgrade
An electrical panel upgrade isn't just swapping boxes. The scope depends on your home's existing setup and how much capacity you need.
Meter-only replacements ($1,500–$3,000) happen when your meter is old but the panel itself is adequate. This is less invasive and keeps costs down.
Full panel upgrades ($3,000–$6,000) involve replacing the main panel, upgrading the service entrance from the utility line, and rerouting connections to circuits throughout your home. Older homes with knob-and-tube wiring or Federal Pacific panels (known for fire risk) should absolutely pursue full upgrades.
Subpanels ($1,500–$2,500) are sometimes a cost-effective alternative if you need additional circuits for an addition or specific high-load appliance, rather than upgrading the main panel entirely.
Timeline matters too. Most jobs take 1–3 days, but you'll need utility company involvement for disconnection and reconnection—that can add 1–2 weeks to the overall process. Plan accordingly if this is part of a renovation.
Permits and Inspections: Non-Negotiable
Never hire someone offering to "skip the permit." A licensed electrician will pull the proper permits from your local authority (usually $100–$300), and the work will be inspected twice: once midway and once at completion. This protects you from code violations, ensures insurance coverage, and protects resale value.
If you're obtaining financing or refinancing your home, lenders may require proof of permitted electrical work. Unpermitted panel upgrades can kill a deal or tank an appraisal.
Finding the Right Electrician
Panel upgrades are not DIY territory. You need a licensed, bonded electrician with specific experience in service upgrades—not just routine circuit installation.
When comparing quotes, confirm that each includes:
- Full inspection of existing wiring and panel condition
- Permit and inspection fees
- Main panel replacement or upgrade to specified amperage
- Service entrance upgrade if needed
- All labor and materials
Get at least three estimates. Prices vary by region, local labor costs, and your home's age. A $3,000 job in rural areas might cost $5,000 in dense urban markets.
Ask whether they'll coordinate with your utility company, since some electricians handle that themselves while others pass it to you. Clarify what happens if additional issues (like deteriorated wiring behind walls) are discovered during the job.
Mercoly lets you compare trusted panel upgrade providers in your area, read verified reviews, and see detailed estimates side-by-side, making it easier to find the right electrician for your specific needs.
Frequently Asked Questions
Q: Do I need to upgrade to 200 amps if I'm just adding one new circuit? No—a new 20-amp or 30-amp circuit can usually be added to an existing 100-amp panel if you have open breaker slots and the panel itself is in good condition. Upgrade only if you're approaching capacity or adding major loads like heat pumps or EV chargers.
Q: Will my insurance company cover damage from an old electrical panel? Not reliably. Many insurers deny claims for damage caused by outdated or overloaded panels, especially if work wasn't permitted. Upgrading preemptively can prevent coverage gaps and sometimes even lower your premiums.
Q: How long does a 200-amp upgrade typically take? Most jobs finish in 1–3 business days of actual work, but factor in 1–2 weeks for utility scheduling. Emergency or same-day availability usually costs 30–50% more.
Get quotes from licensed electricians in your area today to understand your specific needs and timeline.