⚡ Licensed & Insured
🛡 6-Month Warranty
💰 Upfront Flat Pricing
📅 Same-Week Service
⭐ 5-Star Google Rated
⚡ Licensed & Insured 🛡 6-Month Warranty
💰 Upfront Flat Pricing. 📅 Same-Week Service
⭐ 5-Star Google Rated
Electrical Panel Upgrades · Temecula, CA
Electrical Panel
Upgrades in
Temecula, CA
Tripping breakers, dimming lights, not enough capacity for your EV charger or new appliances — Thompson Electric upgrades your panel safely, with permits, and backed by a 6-month warranty.
• Transparent, upfront pricing — zero surprise invoices
• 6-Month workmanship warranty on every job
• Licensed & insured — not subcontractors
• Same-week appointments available
Electrical Panel Upgrades · Temecula, CA
Electrical Panel
Upgrades in
Temecula, CA
Tripping breakers, dimming lights, not enough capacity for your EV charger or new appliances — Thompson Electric upgrades your panel safely, with permits, and backed by a 6-month warranty.
• Transparent, upfront pricing — zero surprise invoices
• 6-Month workmanship warranty on every job
• Licensed & insured — not subcontractors
• Same-week appointments available
Is Your Panel Holding You Back?
Signs You Need a Panel Upgrade
Most homes built before 1990 have a 100-amp panel — designed for an era when homes had far fewer electrical demands. Today's homes run EV chargers, heat pumps, smart appliances, and high-draw HVAC systems that older panels simply weren't built for. Running your home at or beyond capacity creates heat, trips breakers, and in worst cases poses a fire risk.
Breakers Tripping Often
Frequent trips — especially on specific circuits — mean your panel is struggling to keep up with demand.
Lights Dimming
Lights that dim when the dryer or AC kicks on are a classic sign your panel is being pushed to its limits.
Warm or Buzzing Panel
A warm panel box or any buzzing or crackling sound is a serious warning sign — don't wait on this one.
Adding an EV Charger
Level 2 EV chargers require a dedicated 50-amp circuit. Many older panels can't accommodate this without an upgrade.
Home Remodel or Addition
Adding square footage, a kitchen remodel, or a new AC system almost always requires more panel capacity.
Selling Your Home
Outdated or undersized panels can flag during home inspections and derail a sale. An upgrade protects your value.
Get Your Free Panel Quote
Upfront pricing · Same-week scheduling
By submitting you agree to receive SMS notifications from Thompson Electric. Reply STOP to unsubscribe.
Is Your Panel Holding You Back?
Signs You Need a Panel Upgrade
Most homes built before 1990 have a 100-amp panel — designed for an era when homes had far fewer electrical demands. Today's homes run EV chargers, heat pumps, smart appliances, and high-draw HVAC systems that older panels simply weren't built for. Running your home at or beyond capacity creates heat, trips breakers, and in worst cases poses a fire risk.
Breakers Tripping Often
Frequent trips — especially on specific circuits — mean your panel is struggling to keep up with demand.
Lights Dimming
Lights that dim when the dryer or AC kicks on are a classic sign your panel is being pushed to its limits.
Warm or Buzzing Panel
A warm panel box or any buzzing or crackling sound is a serious warning sign — don't wait on this one.
Adding an EV Charger
Level 2 EV chargers require a dedicated 50-amp circuit. Many older panels can't accommodate this without an upgrade.
Home Remodel or Addition
Adding square footage, a kitchen remodel, or a new AC system almost always requires more panel capacity.
Selling Your Home
Outdated or undersized panels can flag during home inspections and derail a sale. An upgrade protects your value.
Get Your Free Panel Quote
Upfront pricing · Same-week scheduling
By submitting you agree to receive SMS notifications from Thompson Electric. Reply STOP to unsubscribe.
Why Thompson Electric?
How We're Different
From quick repairs to full new construction — we handle it all with the
same care and professionalism.
100
200A
100A to 200A Upgrade
The most common upgrade — doubles your home's electrical capacity and allows for modern appliances, EV chargers, and future-proofing. Required by most utilities when adding high-draw circuits.
200
400A
200A to 400A Upgrade
For larger homes, multi-unit properties, or homeowners with multiple EV chargers and high electrical demand. Also common on new builds and large ADU projects.
Sub-Panel Installation
Adding power to a detached garage, ADU, workshop, or backyard structure? A sub-panel feeds those spaces from your main panel without overloading a single circuit.
Panel Replacement
Older panels — especially Federal Pacific, Zinsco, and some older Challenger brands — are known to be problematic. We replace them with modern, code-compliant panels and clean up the wiring while we're at it.
Why Thompson Electric?
How We're Different
From quick repairs to full new construction — we handle it all with the
same care and professionalism.
100A to 200A Upgrade
The most common upgrade — doubles your home's electrical capacity and allows for modern appliances, EV chargers, and future-proofing. Required by most utilities when adding high-draw circuits.
200A to 400A Upgrade
For larger homes, multi-unit properties, or homeowners with multiple EV chargers and high electrical demand. Also common on new builds and large ADU projects.
Sub-Panel Installation
Adding power to a detached garage, ADU, workshop, or backyard structure? A sub-panel feeds those spaces from your main panel without overloading a single circuit.
Panel Replacement
Older panels — especially Federal Pacific, Zinsco, and some older Challenger brands — are known to be problematic. We replace them with modern, code-compliant panels and clean up the wiring while we're at it.
Our Process
What to Expect on Panel Upgrade Day
Most panel upgrades are completed in a single day. Here's exactly what happens from your first call to a fully powered home.
Free On-Site Assessment
We come out, assess your current panel, your home's electrical load, and what you're planning to add. We give you an exact price — no hourly guessing.
We Pull the Permit
Thompson Electric handles all permit applications with the city. No paperwork headaches for you. We also coordinate the SCE (Southern California Edison) meter disconnect in advance.
Upgrade Day
SCE disconnects the meter, we swap the panel, clean up the wiring, and reconnect everything. Power is typically off for 4–6 hours. Most jobs are fully complete in one day.
City Inspection & Sign-Off
We schedule and attend the city inspection. Once it passes, your permit is closed out — your home is fully code-compliant and documented.
You're Powered Up
SCE reconnects the meter, you're back online, and your new panel is covered by our 6-month workmanship warranty. Job done.
Our Process
What to Expect on Panel Upgrade Day
Most panel upgrades are completed in a single day. Here's exactly what happens from your first call to a fully powered home.
Free On-Site Assessment
We come out, assess your current panel, your home's electrical load, and what you're planning to add. We give you an exact price — no hourly guessing.
We Pull the Permit
Thompson Electric handles all permit applications with the city. No paperwork headaches for you. We also coordinate the SCE (Southern California Edison) meter disconnect in advance.
Upgrade Day
SCE disconnects the meter, we swap the panel, clean up the wiring, and reconnect everything. Power is typically off for 4–6 hours. Most jobs are fully complete in one day.
City Inspection & Sign-Off
We schedule and attend the city inspection. Once it passes, your permit is closed out — your home is fully code-compliant and documented.
You're Powered Up
SCE reconnects the meter, you're back online, and your new panel is covered by our 6-month workmanship warranty. Job done.
Common Questions
Panel Upgrade FAQs
How much does a panel upgrade cost in Temecula?
Every project is different. Thompson Electric provides a clear on-site diagnosis and upfront pricing before any work begins — so you know exactly what to expect with no hidden fees or surprise invoices.
How long will my power be off?
Many older homes were built for much lower electrical demand. If you're experiencing tripped breakers, dimming lights, or planning to add an EV charger, a panel upgrade may be necessary. Our electricians will inspect your system and give you an honest recommendation.
Do I need to coordinate with SCE myself?
Most appointments are scheduled within the same week — often within 2–3 business days. For urgent situations, let us know and we'll do our best to prioritize. You can also call us directly at (760) 470-3296.
Is a permit required for a panel upgrade in California?
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Will a panel upgrade fix my constantly tripping breakers?
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I have a Federal Pacific or Zinsco panel. Is that a problem?
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What Customers Say
Panel Upgrade Reviews
Real feedback from Temecula homeowners who've had their panels upgraded by Thompson Electric.
"We are happy to have used Thompson Electric again. They communicate well and take care of our issues. We will continue to use them in the future."
"Richard upgraded our panel so we could add an EV charger. Clean job, pulled the permit, passed inspection first try. Very transparent about pricing — no surprises."
"Richard and Julian did a great job with excellent workmanship and prompt service. These guys Rock!"
Ready to Upgrade?
Get the Capacity Your
Home Actually Needs
Upfront pricing, full permit handling, SCE coordination, and a 6-month warranty. Get your free panel upgrade quote today.
Ready to Upgrade?
Get the Capacity Your
Home Actually Needs
Upfront pricing, full permit handling, SCE coordination, and a 6-month warranty. Get your free panel upgrade quote today.
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Copyright 2026. Thompson Electric. All Rights Reserved.