The charger is the cheap part
Home EV charging quotes vary more than almost any other residential electrical job. Two houses on the same street, same charger, can legitimately differ by a factor of four. Understanding why puts you in a much better position to read a quote.
What you are actually buying
A Level 2 install is three things: a dedicated 240V circuit, the run from the panel to where the car parks, and the unit itself. The unit is the part with a price tag you can look up. The other two are the variables.
A Level 2 circuit adds roughly 25–40 miles of range per hour, against 3–5 on a standard 120V outlet. For most drivers that is the difference between charging overnight and never quite catching up.
The five variables that set your price
1. Distance from the panel
The single biggest driver. A charger mounted on the other side of the wall from the panel is a short run. A detached garage 80 feet away across a finished basement is a different job — and if it needs a trench, different again.
2. Whether the run is finished or open
Fishing cable through finished walls and ceilings takes time and sometimes takes drywall. New construction, an unfinished basement, or an exposed garage ceiling all cost less.
3. Whether your service can carry it
This is where a $700 job becomes a $3,500 job. If the load calculation says the existing service cannot support the charger, you either need a panel upgrade or a charger with load management.
4. Hardwired or plug-in
Hardwiring supports higher continuous amperage and removes a plug that can overheat. A NEMA 14-50 receptacle is more flexible if you might move or swap units. Some jurisdictions require GFCI protection on the receptacle version, which adds cost.
5. Permit and inspection
Required in most places, and it should be in the quote. It is also what protects you — an uninspected 60-amp circuit in your garage is not something you want discovered during a claim.
The panel-upgrade question
Do not assume you need one. A load calculation is what settles it, and many 100-amp services can carry a charger when the charger is set to a lower amperage or supports load management — which lets it back off when the dryer and the oven are running.
If a quote includes a panel upgrade, ask to see the load calculation. A reputable contractor will have one. “The panel’s only 100 amps” is not a load calculation.
Rebates
Utilities and some states offer meaningful rebates on home charging, and federal credits have applied to equipment and installation in recent years. These programmes change constantly — and often require pre-approval before work begins.
Check your own utility’s current offer directly rather than relying on any contractor’s summary of it, including ours. Starting the work before applying is the most common way a rebate is forfeited.
What a good quote looks like
It should name the charger, the circuit amperage, the run length and method, whether it is hardwired, whether a permit is included, and what happens if the load calculation comes back short. A number with none of that behind it is a guess you are being asked to accept.
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Summary
The charger is the cheap part. A Level 2 installation is three things — a dedicated 240V circuit, the run from the panel to where the car parks, and the unit itself — and only the unit has a price you can look up. Five variables set the number: distance from the panel, whether the run is finished or open, whether your existing service can carry the load, hardwired versus plug-in, and the permit. Level 2 adds roughly 25–40 miles of range per hour against 3–5 on a standard 120V outlet. Do not assume a panel upgrade is required; a load calculation settles it. Check rebates with your own utility before work begins.
Frequently Asked Questions
Why do EV charger quotes vary so much?
Because the circuit and the run, not the unit, are the variables. Two houses on the same street fitting the same charger can legitimately differ by a factor of four. Distance from the panel is the single biggest driver — a charger on the other side of the wall from the panel is a short run, while a detached garage 80 feet away across a finished basement is a different job.
How much faster is Level 2 than a standard outlet?
A Level 2 circuit adds roughly 25–40 miles of range per hour, against 3–5 miles per hour on a standard 120V outlet. For most drivers that is the difference between charging overnight and never quite catching up.
Do I need a panel upgrade to install an EV charger?
Do not assume so. A load calculation is what settles it, and many 100-amp services can carry a charger when it is set to a lower amperage or supports load management, which lets it back off while the dryer and oven are running. If a quote includes a panel upgrade, ask to see the load calculation.
Should the charger be hardwired or plug-in?
Hardwiring supports higher continuous amperage and removes a plug that can overheat. A NEMA 14-50 receptacle is more flexible if you might move or swap units. Some jurisdictions require GFCI protection on the receptacle version, which adds cost.
Is a permit required for a home EV charger?
In most places yes, and it should be in the quote. It also protects you: an uninspected 60-amp circuit in your garage is not something you want discovered during a claim.
How do I avoid losing a rebate?
Apply before the work starts. Utility and state programmes change constantly and often require pre-approval, and starting the work before applying is the most common way a rebate is forfeited. Check your own utility’s current offer directly rather than relying on any contractor’s summary of it.