Savant Level 2 EV charger mounted on a wall

EV Charging and Your Panel Adding an EV Charger Without a Service Upgrade

Name: Boston Backup Power
Address: 83 Morse St, Unit 8H, Norwood, MA, 02062, US
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Can you add a Level 2 EV charger without a service upgrade? How load management caps the charger, what the code allows and what to ask an electrician.

By Adam Zell of Boston Automations · Updated October 24, 2026

The short answer

You may not need a service upgrade to add a Level 2 EV charger.Savant's service upgrade avoidance was approved in October 2026, and each home still needs its own load calculation, with the electrician, the inspector and the utility signing off. If the load calculation is tight, an energy management system caps or pauses the charger whenever the rest of the house is busy. The National Electrical Code lets the electrician count that cap, not the charger's full rating, in the load calculation.

Savant Power does this with a module on the charger circuit, or with Savant's own 50 A charger, which the app can slow down or schedule. Your electrician and the town inspector confirm it for your house.

Why does an EV charger trigger a service upgrade?

A Level 2 charger is one of the largest loads in a house. Added to a load calculation that already includes the heat, the range, the dryer and the water heater, it can push the total past a 100 A or 200 A rating. On paper, that means a bigger service.

In practice the car usually charges overnight, when the rest of the house is quiet. Load management makes that pattern a rule: the charger gets whatever capacity is left and never pushes the house over its limit.

What are the ways to fit a charger in?

Ways to add an EV charger to an existing service
Option	How it works	Good for
Lower charger setting	The electrician sets the charger to a lower current	Short daily drives with plenty of overnight hours
Energy management system	A controller caps or pauses the charger when the house is busy	Tight load calculations
Savant Power Modules	A module on the charger circuit, plus modules on other big loads, managed in one app	Homes adding a charger and other electric loads
Service upgrade	A larger utility service	Homes that need several big loads running together

How does Savant manage an EV charger?

Savant's 2-pole 240 V module comes in 30 A and 60 A versions, so it can sit on a typical charger circuit. The system watches the whole house, and when use climbs toward the limit you set, it pauses the charger first and brings it back when there is room.

Savant also makes a Level 2 charger rated at 50 A maximum with a 25 foot cable and a J1772 connector. Paired with a Power Module, the app can set its maximum charge rate to stay within your energy budget or put it on a schedule. With a Savant Smart Panel and solar, Savant says you can charge the car from solar power.

What should you ask your electrician?

What does my load calculation show today, and what does it show with the charger added?
Would an energy management system keep the calculation within my current service?
How does our town inspector treat an energy management system under 220.70 and 750.30?
Is there space in the panel for the charger breaker and a module?

If you are also planning heat pumps, read heat pumps on a 200 amp service before you decide, because the two plans work best together.

Frequently asked questions

Can I install a Level 2 EV charger on a 200 amp panel?

You may be able to. Savant's service upgrade avoidance was approved in October 2026, and each home still needs its own load calculation, with the electrician, the inspector and the utility signing off. If the load calculation leaves room, the charger simply goes in. If it does not, an energy management system can cap or pause the charger when the house is busy, and the NEC lets the electrician count that cap in the load calculation instead of the charger's full rating.

What does the code say about EV load management?

Section 220.70 of the 2023 NEC lets the ampere setpoint of an energy management system be used in the service load calculation. Mike Holt's code calculations book gives the example of a 48 A charger permitted on a 200 A service whose calculated load is already 200 A, using an EV energy management device.

Will load management make my car charge slower?

Only while the house is busy. Most charging happens overnight when little else is running, so the charger usually runs at its set rate. During a peak, such as dinner with the oven and the dryer on, it slows or pauses and then picks back up.

Do I need a Savant charger for Savant load management?

No. A Savant Power Module can switch the charger's circuit, within the module's 30 A or 60 A rating. Savant's own Level 2 charger adds more control: with a Power Module, the app can set its maximum charge rate or a charging schedule.

Who installs the charger?

A licensed electrician installs the charger, the circuit and the modules and pulls the permit. We design the Savant side and set up the priorities with you.

Where to go next

Related guides

More Savant Power guides

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