EV charging at home. The 3 amperage tiers and what each costs.

Electric vehicle ownership in Australia is growing quickly. With it comes the question of home charging, which most new EV owners face within the first month of ownership. The marketing pitch is "install our $1,800 fast charger and you are set." The reality is more nuanced: three distinct tiers of home charging exist, each suited to a different daily driving pattern.

This post explains the three tiers, the install cost for each, and how to choose the right tier for your actual driving.

Tier 1: standard 10-amp wall socket (Trickle charging)

The cheapest, simplest charging option. Plug the car into a standard 10A general-purpose outlet (the type that powers your kettle).

Charging rate

• Approximately 2.0-2.3 kW continuous draw
• 10-12 km of range added per hour of charging
• 80-110 km added in an 8-hour overnight charge

Suitable for

• Drivers who cover under 50 km per day on average
• Plug-in hybrid EVs (PHEVs) with smaller battery
• Holiday-home or secondary-residence charging where the EV sits idle most of the time
• Renters who cannot install dedicated infrastructure

Cost

• Cable typically included with the vehicle
• No electrical work required
• $0 incremental cost

Limitations

• The charging cable plugs into a continuous outlet for 8-12 hours overnight
• Some general-purpose outlets are not rated for continuous high current; older homes may need to verify the circuit's capacity
• Not suitable for vehicles with large batteries that need fast turnaround

Tier 2: 16-amp wall socket (Slow AC charging)

A step up from Tier 1. A dedicated 16A outlet on a circuit sized for continuous EV charging.

Charging rate

• Approximately 3.6 kW continuous draw
• 18-22 km of range added per hour
• 144-176 km added in an 8-hour overnight charge

Suitable for

• Drivers who cover 50-120 km per day
• Standard battery EVs (40-60 kWh battery) charging overnight
• Households where one EV charges per night

Cost

• 16A outlet installation: $400-800 by a licensed electrician
• Possibly some switchboard work: $200-500
• Total typical install: $600-1,200

Limitations

• Still slower than a dedicated wall charger
• Not suitable for households with multiple EVs charging simultaneously
• Some EVs require a specific cable for 16A charging (the manufacturer's "occasional use" cable usually does NOT support 16A)

Tier 3: 32-amp dedicated wall charger (Fast AC charging)

The full residential charging solution. A dedicated wall-mounted EV charging unit on a dedicated high-current circuit.

Charging rate

• Approximately 7.2 kW continuous draw on single phase, or 22 kW on three phase
• 35-45 km of range added per hour (single phase)
• 110-140 km added per hour (three phase)
• A typical EV charges from 20% to 80% in 4-6 hours on single phase, or 1.5-2 hours on three phase

Suitable for

• Drivers who cover 120+ km per day
• Households with multiple EVs
• Drivers who arrive home late and need a faster turnaround
• Drivers who want to top up between activities
• Three-phase households (typically newer builds) wanting fastest possible AC charging

Cost

• Wall charger hardware: $1,200-2,800 (Tesla Wall Connector, Schneider EVlink, Wallbox Pulsar, etc.)
• Installation labour: $500-1,200
• Dedicated 32A circuit: $400-800
• Switchboard upgrade if required: $400-1,200
• Three-phase install (where applicable): typically $1,000-2,500 additional
• Total typical install: $2,500-5,500 for single phase, $4,000-8,000 for three phase

Limitations

• Higher upfront cost
• Some buildings need network operator approval for the high-current circuit
• Three-phase installs are not feasible in older single-phase houses

How to choose the right tier

The decision is driven by daily kilometres, not by the car.

Under 50 km per day

Tier 1 (10A wall socket) is sufficient. The car charges fully overnight. No incremental cost.

50 to 120 km per day

Tier 2 (16A outlet) is the sweet spot. Faster than Tier 1, materially cheaper than Tier 3.

Over 120 km per day, or two EVs

Tier 3 (dedicated wall charger) is the right answer. The faster charge rate provides flexibility.

Special case: solar self-consumption

If you have substantial solar (6.6 kW+) and want to charge your EV from solar during the day, Tier 2 or Tier 3 is preferable to Tier 1. The faster rate lets you complete a charge within the 4-6 hour solar window.

A Tier 1 charger drawing 2 kW from solar that produces 5-7 kW at midday only uses 30-40% of the available solar. Tier 3 drawing 7.2 kW uses essentially all of it.

The networking question

EV charging draws substantial current. The Australian Energy Market Operator (AEMO) and individual network operators (Ausgrid, Energex, etc.) are paying close attention to residential EV load on the grid.

In 2026, the rules typically:

• 16A circuits: no special network approval needed
• 32A single-phase: approval typically required from the network operator
• Three-phase: approval required, sometimes with smart charging restrictions during peak

Smart charging (the charger schedules charging to off-peak hours or follows solar) is increasingly required as a condition of network approval. Most modern wall chargers support this automatically.

What to install when you buy your first EV

For most Australian buyers in 2026, the recommended sequence:

1. Day 1: use the trickle cable that came with the car (Tier 1). Confirm your driving pattern over 1-2 months.
2. Month 2-3: decide between Tier 2 and Tier 3 based on actual usage.
3. If installing Tier 2: $600-1,200, 1 day's electrician work.
4. If installing Tier 3: $2,500-5,500, may take 2-4 weeks with network approval.

Skipping the assessment phase and going straight to Tier 3 sometimes results in $3,000 of infrastructure for a household that only needed Tier 2.

EV charging at home is the second-largest residential electrical install after major air conditioning. Choosing the right tier saves money and avoids the disappointment of an under-spec install. The right tier is the one matched to your actual daily driving, not the one the EV salesperson assumes you need.