Two-EV household charging leads, from garages ready for a second car.

Playbook

How to help owners charge two EVs at home

Households that have one EV often go on to get another, and the second car raises real questions. Two fast chargers could call for up to 100 amps or more of circuit capacity, which is beyond what many homes can spare. Owners tend to assume that means a large service upgrade. Often, it doesn't, and explaining why is exactly the kind of expertise that wins this work.

Start with driving, not hardware. Typical daily driving is modest, and two cars parked overnight have many hours to recover what they used. A Level 2 charger at 32 or 40 amps can replace a typical day's miles in a fraction of a night. When you present the actual number of hours each car needs, sharing a circuit stops sounding like a compromise. Base your estimate on the owner's real mileage.

Explain the hardware options. Many smart chargers support power sharing, where two units on one circuit divide the available current between them. A single dual-port unit is another route. Automatic load management can also manage chargers against the whole house. Choices depend on the charger brands, the vehicles' connectors, and the local code, so check compatibility before you recommend a specific setup, as not every pair of units can share power.

Watch out for connector changes. Many newer EVs use the NACS (J3400) connector, while many homes have J1772 chargers, and a household may end up with one of each. Adapters exist, and the vehicle maker's guidance applies. A new charger with the right connector or a cable swap may be the best answer. Raising this before the owner runs into it shows you're paying attention to what's happening in the market.

Find the right audience. Your own single-charger customers are the best list, because you know their panel and their install, and they trust you. Past customers from at least a couple of years ago are a good starting point. Outside your list, 3-car garages in higher-value, EV-heavy zips are a reasonable proxy, but property data can't show vehicles. Word your copy with care, and say 'if you've got a second EV coming.'

Consider what else is coming. Owners adding a second EV may also be adding a heat pump, solar, or a battery. Time-of-use rates in many utility areas can also change when charging makes sense, and smart chargers can schedule around them. A short planning conversation, instead of a quick quote for a second wall box, tends to create a better system and a much better job for you.