EV CHARGER INSTALLATION · SAN ANTONIO
EV Charger Installation in San Antonio, TX
Level 2 charger installs with a real load calculation, not an assumption about capacity.
Keil Electric San Antonio installs Level 2 EV chargers across the San Antonio metro, including load calculation, dedicated circuit, permit, and utility requirements. Master-licensed, TX #40645, (830) 214-8444.
San Antonio: Most days we're already in the area. Same-day appointments when capacity allows. After-hours emergencies dispatched when a licensed electrician is available, a real person at the local shop answers and tells you the ETA on the call.
Call nowIn the newer subdivisions around Cibolo, Schertz, Selma, Converse, and New Braunfels most homes are already on 200A service with panel space, so a charger install is straightforward. In the older parts of San Antonio it frequently is not, and the honest answer is that the panel has to come first. We do the load calculation before quoting either way.
Permits and inspections
Not every job requires a permit. When the local AHJ requires one, we pull it, schedule the inspection, and stay with the job until it passes. No paperwork on you.
What's covered
5-year written warranty on EV chargers and motorized fans. Parts and labor. Stays with the home and transfers to the next owner.
What is different about EV charger installation in Texas.
Some of what we do for EV charger installation is shaped by the codes and conditions specific to Texas. Here is what tends to differ versus other states.
Code adoption in Texas
Texas adopts the National Electrical Code at the state level through the Texas Department of Licensing and Regulation, with most cities in the San Antonio metro adopting the most recent NEC cycle within a year or two of publication. Schertz, New Braunfels, Cibolo, and the other cities we cover each maintain their own permitting offices with slightly different inspection scheduling and form workflows. We track which cycle each AHJ in our coverage area is currently enforcing, so the scope we write for a job in Schertz is current to that city, not just current to "Texas." When a project crosses jurisdictions or sits in unincorporated county, we route the permit through the correct authority and tell you upfront which inspection cadence applies.
Hot-climate considerations
Summers across the San Antonio metro run long and hot, and that affects EV charger installation in ways that are easy to underestimate. Panels mounted on west-facing exterior walls run hotter all afternoon. Attic-mounted equipment derates per code because ambient attic temperatures regularly clear 130°F. AC compressors pull near-rated current for hours at a stretch through July and August, which puts more thermal cycling on terminations than the same equipment would see in a milder climate. We size conductors and breakers with that summer load profile in mind, not just the nameplate minimum. On older homes we look closely at terminations that may have loosened from years of heat cycling, those are a common cause of intermittent issues that get misdiagnosed elsewhere.
Severe weather and storm response
The metro sees thunderstorm hail, the occasional derecho, and the post-storm spike in generator and surge-protection demand that comes with each event. We keep enough surge-protection inventory at the shop to swap out a damaged whole-home unit same-day after a strike, and we know which generator and transfer-switch SKUs are realistic to source quickly when the supply chain tightens after a regional event. After the 2021 winter storm we also got a lot more careful about which loads customers actually need on backup, versus which loads end up on the generator only because nobody asked the question at install time.
Cities where we run EV charger installation.
We dispatch EV charger installation across the San Antonio area from our shop. Pick your city for the local page, or "See all cities" for the full coverage list.
Why hiring a licensed electrician matters.
For EV charger installation, here's the honest comparison. We'd tell you the same thing if we weren't trying to win the job.
A licensed electrician
Unlicensed for electrical
Doing it yourself
Spread the cost over time.
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Common questions for EV Charger Installation in San Antonio, TX
What size EV charger should I install?
Most homeowners install a 40A or 48A Level 2 charger, which gives 25-35 miles of range per hour. The right size depends on the vehicle, daily driving distance, and panel capacity. We size on the first call after asking about your driving and electrical service.
Do I need a dedicated circuit for my EV charger?
Yes. Every Level 2 EV charger requires its own dedicated circuit sized to the charger's amperage. We pull a new circuit from the panel to the charger location and install the breaker.
Can my existing panel handle an EV charger?
Often yes for 100A panels with available capacity, almost always yes for 200A. We run a load calculation that accounts for AC, water heater, and other major loads before confirming. If the panel cannot support the charger, we discuss an upgrade as a separate scope.
How long does EV charger installation take?
A typical home install runs 2-4 hours when the panel and run are straightforward. Longer runs, panel upgrades, or attic/crawl space routing extend the time and we confirm the timeline in the written quote.
Plug-in or hardwired - which is better?
Plug-in (NEMA 14-50) is more flexible and lets you take the charger when you move. Hardwired allows higher amperage on the same circuit and is required for some commercial installs. We confirm which path matches your charger and your goals.
Do you install Tesla Wall Connector?
Yes. We install the Tesla Wall Connector on dedicated 240V circuits sized to the breaker rating you choose (32A, 40A, 48A, or 60A on the third-generation unit). The Wall Connector is the cleanest Tesla install option for daily charging.
Do you install ChargePoint Home Flex, JuiceBox, or Wallbox?
Yes. ChargePoint Home Flex, JuiceBox 40, Wallbox Pulsar Plus, and Emporia Level 2 chargers are all in our standard install list. Owner-supplied units from any other major brand are fine too.
Can I just use a NEMA 14-50 outlet to charge?
Yes for portable chargers and Tesla Mobile Connector. NEMA 14-50 receptacles now require GFCI per recent NEC cycles, which can cause nuisance trips on some chargers. For permanent installs, hardwiring usually gives better reliability.
How much does an EV charger install cost?
Typical installs range based on panel capacity, distance from panel to charger location, and equipment selection. The price is in writing before any work starts. About a third of the homes we walk need a panel upgrade before a Level 2 install can happen safely.
Need EV charger installation in San Antonio?
Tell us about the project. A licensed San Antonio licensed electrician walks the job in person and writes a real scope, backed by our written warranty.