Can I charge two EVs at the same time in my Calgary garage?

Yes, you can charge two EVs simultaneously in your Calgary garage, but your panel must have sufficient capacity and the installation approach matters. There are three main strategies: two independent circuits, a power-sharing charger system, or a load management device. The right choice depends on your panel capacity, budget, and how quickly each vehicle needs to charge.

Two independent circuits is the most straightforward approach. Each EV gets its own dedicated 240V circuit — typically two 50-amp or 60-amp circuits — with its own breaker, wire run, and charger. This provides maximum charging speed for both vehicles simultaneously. The catch is that two 50-amp circuits consume 100 amps of panel capacity, or two 60-amp circuits consume 120 amps. On a 200-amp panel that is already serving your home's other loads (range, dryer, AC, hot water, general circuits), there may not be enough capacity for two full-size EV circuits. A load calculation by your electrician determines whether this approach is feasible. If it is, expect to pay $2,400 to $5,000 for two complete charger installations including both charger units, two dedicated circuits, and the electrical permit. Many newer homes in communities like Seton, Cornerstone, and Belmont have sufficient panel capacity for this approach.

Power-sharing charger systems are the most practical solution for most Calgary two-EV households. The Tesla Wall Connector supports power sharing — two Wall Connectors can be installed on a single 60-amp circuit and will automatically split the available power between both vehicles. When one car is charging alone, it gets the full 48 amps. When both are plugged in, each gets 24 amps. At 24 amps, each vehicle still adds roughly 25 to 30 kilometres of range per hour, which means both cars gain 250 to 300 kilometres of range during a 10-hour overnight charge — more than enough for typical Calgary daily driving. This approach uses only one 60-amp circuit (one breaker, one wire run), keeping panel demand and installation cost significantly lower. The additional cost is just the second Wall Connector unit and the short wiring run from the power-sharing junction — typically $800 to $1,200 above a single-charger installation.

Load management devices like the DCC-9 or NeoCharge splitter offer another option. These devices install between your panel and two chargers, dynamically managing the power draw so that the combined load does not exceed a set limit. Some models share power between the EV charger and another large appliance — for example, the NeoCharge plugs into your existing dryer outlet and splits power between the dryer and an EV charger, alternating based on which is actively drawing power. Others manage power between two EV chargers on a single circuit. These devices cost $300 to $600 installed and can eliminate the need for a panel upgrade by keeping total demand within your panel's existing capacity.

Calgary's cold winters add a consideration. During extreme cold snaps, both vehicles will charge more slowly as battery management systems limit charging current to protect cold batteries. If both cars need to be fully charged by morning, the power-sharing approach may cut it close during the coldest weeks of January and February — each car might gain only 180 to 220 kilometres overnight at 24 amps in -30°C conditions. Preconditioning both vehicles while plugged in the morning further draws from the shared circuit. For most Calgary commuters driving under 80 kilometres per day, this is still sufficient, but heavy-mileage drivers should consider two independent circuits.

All of these installations require an electrical permit from the City of Calgary and inspection by a Safety Codes Officer. Your electrician handles the permit process. Get quotes from licensed electricians who have experience with dual-EV installations — the load calculation and circuit design require careful planning. Calgary Electrical Services can connect you with qualified electricians through the Calgary Construction Network.