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Electrical Panel Upgrade Contractors in San Antonio, TX

45 electrical panel upgrade contractors near you in San Antonio, TX. See prices, read verified reviews & compare top-rated local pros. Get free quotes in 60 ...

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45contractors

45 contractors in San Antonio

All Electrical Panel Upgrade Contractors45

Allgood Electric, Inc.

12106B Valliant St , San Antonio, TX 78216

BBB Accredited A+ rated. Electrician, Electrical Contractors, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Thunder Electric

12026 Colwick St Ste A , San Antonio, TX 78216-2719

BBB Accredited A+ rated. Electrician, Electrical Contractors, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Thunder Electric

12026 Colwick St Ste A , San Antonio, TX 78216-2719

BBB Accredited A+ rated. Electrician, Electrical Contractors, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Home Pros for Texas

318 W Nakoma St , San Antonio, TX 78216-2621

BBB Accredited A+ rated. Construction, Roofing Contractors, Electrician ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Home Pros for Texas

318 W Nakoma St , San Antonio, TX 78216-2621

BBB Accredited A+ rated. Construction, Roofing Contractors, Electrician ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Gueldner Electric Company

247 W Olmos Dr , San Antonio, TX 78212-1957

BBB Accredited A+ rated. Commercial Electrician, Electrician, Electrical Contractors ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Will Fix It

3535 Metro Parkway , San Antonio, TX 78247

Heating and Air Conditioning, Plumber, Electrician ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Mr. Electric of San Antonio

4729 Shavano Oak , San Antonio, TX 78249-4020

BBB Accredited A+ rated. Electrician, Electrical Contractors, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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JV Electric LLC

12123 Jones Maltsberger Rd , San Antonio, TX 78247-4202

BBB Accredited A+ rated. Electrical Contractors, Electrician, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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Davila Electric

1842 Bandera Rd , San Antonio, TX 78228-3801

BBB Accredited A+ rated. Electrician, Electrical Contractors, Electrical Wiring ...

Serves: 78201, 78202, 78203, 78204 +52 more

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VKM Electric, LLC

San Antonio, TX 78237-1559

BBB Accredited A+ rated. Electrician, Electrical Contractors, Commercial Electrician

Serves: 78201, 78202, 78203, 78204 +52 more

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Mister Sparky of San Antonio

12829 Wetmore Rd , San Antonio, TX 78247-3628

BBB Accredited A+ rated. Electrician, Electrical Contractors, Landscape Lighting ...

Serves: 78201, 78202, 78203, 78204 +52 more

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San Antonio Electrical Panel: 100A vs 200A vs 400A - What Size Do You Need?

San Antonio Panel Size Selection Guide

Panel SizeMonthly Typical San Antonio UseBest For
100A (existing, aging)Up to 10,000-15,000 kWh/yearVery small home; no EV; window AC only; often undersized for modern loads
200AUp to 30,000 kWh/yearStandard San Antonio home; central HVAC; modern appliances; single EV charger
400A (dual 200A)Large estate; high-demand loadsSan Antonio homes with multiple HVAC units, pool pump, EV chargers, workshop

Signs Your San Antonio Electrical Panel Needs Upgrading

  1. Breakers that trip frequently - particularly during summer AC peak; indicates overloaded circuits on the existing panel
  2. Fuse box (not breaker panel) - any San Antonio home with a fuse box should be upgraded immediately; fuses are a fire risk and not insurable under most modern policies
  3. Federal Pacific Stab-Lok or Zinsco panels - both brands known for breaker failure and fire risk; if your San Antonio home has one of these panels (common in 1960s-1970s San Antonio homes), replacement is urgent
  4. Planning EV charger installation - a Level 2 EV charger requires a dedicated 40-50A, 240V circuit; most 100A San Antonio panels cannot accommodate this without upgrade
  5. Adding major new loads - hot tub, pool pump, new HVAC system, or whole-home generator

San Antonio Winter Storm Uri Lessons

February 2021 Winter Storm Uri caused widespread electrical system failures across San Antonio. Many older San Antonio homes with 100A panels experienced circuit failures during the prolonged cold event when heating loads (backup electric heat, space heaters) pushed panels beyond capacity. Post-Uri electrical upgrades (panel upgrades, whole-home surge protection, generator transfer switches) surged in demand across Bexar County.