Your options
- Two chargers that talk to each other: Easee, zappi and others can share the available current between two units automatically
- Adding a second charger alongside your existing one, with load management across both
- Charging on a schedule: one car early in the night, the other later, which is often enough on an overnight tariff
Why load balancing matters
Two 7kW chargers running at full power draw around 64A on their own. Add your cooker and shower, and a typical 80A or 100A main fuse is at its limit. Load balancing measures what the house is using and shares the remaining current between the cars, so nothing trips and nothing overheats.
Supply checks
We look at your main fuse size and whether SSEN needs to be involved. In most homes, load balancing means no supply upgrade is needed. See looped supply and main fuse upgrades for when it is.
Common questions
Can I charge two cars overnight on one supply?
Yes, in most homes. With load balancing and an overnight tariff window of five to six hours, both cars usually get what they need for the next day.
Do the two chargers need to be the same brand?
For automatic load sharing it's simplest if they are. Different brands can still be run on separate schedules.