10 Questions to Ask Before Hiring an Electrician for EV or Battery Work

Installing an EV charger or a home battery is a real electrical project. The difference between a smooth install and an expensive headache often comes down to who you hire. The good news is that a handful of direct questions will quickly separate qualified professionals from the rest. Here are the ten questions to ask before you sign anything, and why each one matters.

1. Are you licensed and insured in my state?

This is the non-negotiable first question. A licensed electrician has met your state's training and testing standards. Insurance (both liability and workers' compensation) protects you if property is damaged or someone is hurt on your property. Ask for their license number and proof of insurance, and don't accept vague answers. Licensing rules vary by state, so a license must be valid where you live, not just somewhere.

2. Will you pull the permit?

EV chargers and batteries almost always require an electrical permit and an inspection. A professional pulls the permit in their own name and schedules the inspection. Be wary of anyone who suggests skipping the permit to save time or money. Unpermitted work can cause problems when you sell your home, may void insurance claims, and can be unsafe. The permit is your proof the work met code and was inspected.

3. Are you Tesla or SPAN certified for this equipment?

For specialized equipment like a Tesla Powerwall or a SPAN smart panel, manufacturer certification means the installer has been trained on that exact product. Certification can also affect warranty coverage and access to manufacturer support. It's a strong signal that the installer knows the equipment, not just wiring in general.

4. Is the quote fixed, or could it change?

Ask whether the price is a firm, fixed quote or an estimate that could move. A detailed written quote should list the equipment, labor, permit fees, and any expected extras. A fixed quote protects you from surprise charges, while a loose "estimate" can grow. If it's not fixed, ask exactly what could change it (see question 10).

5. Who performs the load calculation?

A load calculation determines whether your electrical panel can handle the new load or needs an upgrade. A qualified electrician does this before quoting, not after starting work. If an installer skips it or hand-waves it, that's a red flag. The load calculation is what tells you whether you need a panel upgrade, which has a big effect on cost.

6. What warranty do I get?

There are usually two warranties: the manufacturer's warranty on the equipment, and the electrician's warranty on their workmanship. Ask how long each lasts and what they cover. A confident, established installer stands behind their labor. Get the workmanship warranty in writing so you know who to call if something isn't right after the job.

7. Do you handle the utility interconnection? (for batteries)

Home batteries usually require an interconnection agreement with your utility, essentially permission to connect storage to the grid. This paperwork can take time and has its own rules. A good installer manages the interconnection application for you. If you're adding a Powerwall or similar battery, confirm they'll handle this step, because a missed interconnection can delay or complicate your project.

8. What's the timeline?

Ask how long the job takes and what the schedule looks like from permit to final inspection. A simple EV charger might be a single day plus inspection scheduling. A battery with interconnection can take longer because of utility and permit timelines. A clear answer shows the installer has done this before and manages projects well.

9. Can you provide references or recent examples?

An experienced installer can point to recent, similar jobs, homeowner references, or reviews. For EV and battery work specifically, ask about installs like yours, not just general electrical work. Talking to a past customer, or reading verified reviews, tells you how the installer communicates and handles problems.

10. What could change the price?

Finally, ask directly what might push the cost above the quote. Honest answers usually include things discovered once work begins, such as:

A professional will explain these upfront rather than surprise you later. Knowing the possible variables lets you budget with confidence.

• A panel that turns out to need upgrading.
• Longer wiring or conduit runs than expected.
• Hidden issues like outdated or unsafe existing wiring.
• Permit or utility fees specific to your area.

Rough price ranges to expect

Before your final quote, these ranges help you sanity-check what you hear: EV charger installation typically runs $400 to $1,800; a Tesla Powerwall 3 starts around $9,200 plus installation; and a 200-amp panel upgrade runs $1,800 to $4,500. Your actual numbers depend on your home, which is exactly why the load calculation and a detailed quote matter.

A note on incentives

Ask your electrician about current rebates too, but verify independently. The federal tax credits for home batteries and EV chargers have ended (the battery credit at the end of 2025 and the EV charger credit in mid-2026). Many state and utility programs still exist in 2026, but they change often. Check your utility, your state energy office, and the free DSIRE database (dsireusa.org), and consult a tax professional.

How CHS answers these questions

Charge Home Solutions is Tesla Energy Certified and SPAN Certified, licensed and insured, and we install through a nationwide network of local electricians. We pull permits, schedule inspections, run the load calculation before quoting, and handle utility interconnection for battery projects. If you'd like straight answers to every question above for your specific home, call 888-995-6044 for a free quote.