Electrical Panel Upgrade · Twin Falls, Idaho

Electrical Panel Upgrade in Twin Falls, Idaho

Tervano Electric performs electrical panel upgrades for Twin Falls homeowners — 100A to 200A or 400A service upgrades. We pull the permit through the City of Twin Falls Building Department, coordinate with Idaho Power for service upgrades when needed, and provide a written estimate before any work starts. Cost: $1,200–$2,500 for most Twin Falls homes. Call (208) 886-8454.

Most Twin Falls homes built before 1990 have 100-amp panels. EV chargers, heat pumps, and modern appliances need more. A panel upgrade is the most common electrical job we do — and one of the most important for your home’s safety and resale value.

📞 Call (208) 886-8454Get a Panel Estimate →
Do You Need an Upgrade?

Signs Your Twin Falls Home Needs a Panel Upgrade

Twin Falls has a large stock of homes built between 1955 and 1990 — most with 60A or 100A service panels that were fine for the time but struggle with today’s electrical loads. Here are the signs you need an upgrade.

Breakers trip frequentlyRunning your dryer and microwave simultaneously trips a breaker — classic sign of an overloaded 100A panel in a home with modern appliances.
You’re adding an EV chargerA Level 2 charger draws 32–50A continuously. Most 100A panels can’t safely add that load without an upgrade first.
You’re adding a hot tub or poolA 240V hot tub circuit draws 40–60A. Combined with existing loads, this regularly exceeds 100A panel capacity.
Your panel has a Federal Pacific or Zinsco brandThese panels (common in Twin Falls homes from the 1960s–70s) have documented failure rates. Insurance companies increasingly refuse to cover them.
You’re installing a whole-home generatorA generator with automatic transfer switch needs its own breaker and proper integration with your main panel.
Your home insurance renewal raised questionsInsurance companies now inspect electrical panels during renewals. An aging panel — especially Federal Pacific — can cause coverage issues.
How It Works

Our Panel Upgrade Process in Twin Falls

We handle every step of the panel upgrade process — you don’t have to coordinate with the City or Idaho Power yourself.

01

Free On-Site Assessment

We assess your existing panel, service entrance, and load requirements. We identify whether you need 200A or 400A, and whether a utility service upgrade is needed.

02

Written Estimate

You receive a flat price covering labor, materials, and permit fees before we schedule. No surprises.

03

Permit + Idaho Power

We apply for the City of Twin Falls permit ($85–$340). If you need a utility service upgrade, we submit the load calculation to Idaho Power and coordinate the work.

04

Installation + Inspection

We install the new panel, label every circuit, and coordinate the City electrical inspection. Idaho Power reconnects service after inspection approval.

Pricing

Panel Upgrade Costs in Twin Falls, Idaho

Upgrade TypeTypical CostCity Permit FeeWhen You Need It
60A or 100A → 200A$1,200 – $2,500$85 – $340Standard upgrade for homes adding EV charger, generator, or heavy appliances
200A → 400A$2,000 – $4,000$85 – $340Large homes, EV + generator + heat pump all running simultaneously
200A with utility service upgrade$2,500 – $5,500$85 – $340When Idaho Power’s existing service line is undersized — requires utility coordination
Federal Pacific / Zinsco replacement$1,500 – $3,000$85 – $340Safety replacement of documented failure-prone panel brands common in TF
Subpanel installation$800 – $2,000$85 – $340Detached garage, shop, or remote outbuilding addition

Ready to Upgrade Your Panel in Twin Falls?

Free estimate, written quote, permit handled. Most Twin Falls panel upgrades completed in one day once permits are approved.