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Home EV charger installation: what drives the cost

The charger itself is the predictable part. The wiring between your panel and your parking spot is where quotes differ.

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Calls are answered by an independent provider that serves your ZIP code. You decide whether to hire.

The short version

What sets the price
How far the panel is from the parking spot, and whether the panel has spare capacity.
Level 1 or Level 2
Level 1 uses the cord supplied with the car. Level 2 is 240-volt equipment on its own circuit.
Ask first
Whether your panel can carry the charger without an upgrade.

A quote should spell out

  • The circuit size and the route the cable will take.
  • Whether the charger is hard-wired or plugs into an outlet.
  • Who pulls the permit and books the inspection.
  • Whether a load calculation for the panel is included.

What pushes the price up

  • A long run from the panel to the garage or driveway.
  • A panel with no spare capacity.
  • Trenching to a detached garage or parking pad.
  • Finished walls and ceilings along the route.

The parts of the decision

  • Level 1 chargingThe US Department of Energy notes owners can charge overnight where "a power outlet on a dedicated branch circuit is available near their parking location."
  • Level 2 chargingIts page describes 240 V equipment at home "for a faster charge" and says a qualified electrician can add circuits for the capacity needed.
  • Panel capacity"Electricians can inform homeowners whether their home has adequate electrical capacity for vehicle charging," the same page says.
  • Permits"Appropriate permits may be required from the local building and permitting authorities." Our city guides name the office for each area.

How the job usually goes

  1. A site visit to check the panel and measure the route.
  2. A load calculation to confirm the panel can carry the charger.
  3. The permit, then the circuit and the charger are installed.
  4. The inspection, and a test with the car plugged in.

Electrical code treats vehicle charging as a continuous load, the Department of Energy notes. That is why the circuit is sized with headroom and why panel capacity matters more than it does for most appliances.

Related guides

Sources

  • US Department of Energy
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