Single-phase 7kW installs
A 7kW charger (Tesla Wall Connector, Ocular Home, Zappi single-phase, Fronius Wattpilot Home) on a typical Australian home with a modern switchboard and a sensible cable run costs $1,200 – $1,900 supply and install.
Cable runs over 15m, drilling through brick or block, or running underground will push the price toward the top of that range.
Three-phase 22kW installs
If you have three-phase power available, 22kW chargers (Ocular Home 3-phase, Zappi 3-phase, EO Mini Pro 3, Wallbox Pulsar Plus) run $2,200 – $3,800 installed.
Worth doing only if your vehicle accepts AC fast charging (most Teslas, Polestars and newer Mercedes/Audi/BMW EVs do). Otherwise it's spending money for no real benefit over 7kW overnight.
What blows the price out
Long cable runs (over 20m). Cable is expensive and copper is heavy.
Switchboard upgrades required because the existing board has no RCD spaces.
Underground trenching (we typically subcontract this — adds $400–$1,200).
Old single-phase supply not rated for the load (rare but happens in pre-1980s rural homes).
Avoiding a switchboard upgrade
Modern chargers with load management (Zappi, Ocular, Wattpilot) throttle their draw to stay within your mains capacity. In most cases this means you can add a 7kW charger without upgrading the switchboard — even on a relatively old board.
Always have your installer check this before quoting an upgrade. We've avoided plenty of unnecessary $2k+ switchboard jobs this way.
Solar-aware charging
If you have solar, a solar-aware charger (Zappi, Wattpilot, Ocular) can be set to only charge from your excess PV — essentially free fuel from your roof. Worth paying $200–$400 more upfront for the right unit.
What should always be in the quote
Dedicated RCD-protected circuit
Properly sized cable for the run length
Compliance certificate
Brand registration / warranty activation
A real test charge with you on site at handover