One of the biggest misconceptions around EV charging is that faster always means better.
As EVs become more common across the Sunshine Coast, many homeowners immediately assume they need the biggest and fastest charger available.
In reality, most homes — and most EV owners — simply do not need a 22kW EV charger.
For many households, a properly designed 7kW single-phase charging system is more than capable of fully charging a vehicle overnight.
The best charging setup depends far more on how you actually use the vehicle than simply chasing the highest charging speed.
At JAX Power Solutions, we regularly help homeowners understand the practical differences between charging systems so they can make informed decisions without unnecessarily overcomplicating the installation.
What Is A 22kW EV Charger?
A 22kW EV charger is typically a three-phase AC charging system capable of delivering significantly faster charging speeds compared to standard single-phase chargers.
In simple terms:
- single-phase chargers are commonly around 7kW
- three-phase chargers can often charge at up to 22kW
However, this does not automatically mean your vehicle will charge at 22kW.
The actual charging speed depends on several factors including:
- the vehicle itself
- the vehicle’s onboard charger limitations
- the home’s electrical supply
- network restrictions
- charger configuration
This is where many homeowners become confused.
The Reality Of Overnight Charging
For most households, the vehicle is parked at home for long periods overnight.
Even a standard 7kW charger can typically add hundreds of kilometres of range during this time.
For example, if a vehicle is parked at home from:
- 6pm until 6am
- or overnight while sleeping
…the charging system has many hours available to replenish the battery.
This means that in day-to-day use, many EV owners simply never require ultra-fast charging at home.
Public fast chargers and highway charging infrastructure already exist for situations where rapid charging is needed during travel.
Home charging is usually about:
- convenience
- consistency
- overnight replenishment
- long-term practicality
Not maximum charging speed at all times.
Do I Have Three-Phase Power?
A 22kW charger generally requires:
- three-phase supply
- appropriate switchboard capacity
- suitable cabling
- compliant protection devices
Not every home has three-phase power available.
Some homes may require:
- supply upgrades
- switchboard upgrades
- additional infrastructure
- network approval considerations
These upgrades can significantly increase installation costs.
For many homeowners, the additional charging speed simply does not justify the added complexity and expense.
What About Future Proofing?
This is one of the most common reasons homeowners consider larger charging systems.
And in some situations, it absolutely makes sense.
A larger charging system may be worth considering if:
- multiple EVs are expected in the future
- the property already has three-phase supply
- charging turnaround times are critical
- very high daily driving distances are common
- future energy upgrades are planned
However, “future proofing” should still remain practical.
There is little benefit spending significantly more on infrastructure that may never actually be required.
The best setup is usually the one that balances:
- practicality
- charging habits
- installation cost
- future flexibility
- overall energy system design
Single Phase Charging Is Often More Than Enough
Many EV owners are surprised how effective single-phase charging actually is.
A properly installed 7kW charger can comfortably handle:
- daily commuting
- school runs
- local driving
- overnight replenishment
- most residential charging requirements
For the majority of households, the vehicle simply spends enough time parked at home that ultra-fast AC charging becomes unnecessary.
This is especially true when combined with:
- overnight charging schedules
- off-peak tariffs
- solar integration
- smart charging control
What About Solar Integration?
For many homes, integrating EV charging with solar becomes more important than absolute charging speed.
A well-designed charging system can intelligently utilise excess solar generation during the day rather than heavily importing from the grid.
Some smart chargers can dynamically adjust charging output depending on:
- solar production
- household usage
- battery system behaviour
- network limitations
This is often a far more valuable feature for homeowners than simply chasing the highest possible charging speed.
Energex And Network Requirements
As EV adoption grows throughout Queensland, network requirements around EV charging continue to evolve.
Higher-powered charging systems can involve:
- dynamic connection requirements
- load management systems
- controlled charging arrangements
- additional approval processes
This is particularly relevant for larger charging installations and homes with multiple high-demand electrical loads.
A properly designed charging installation should consider these requirements from the beginning.
So… Do You Actually Need A 22kW Charger?
For some homes — yes.
For many homes — probably not.
The right charger depends on:
- how far you drive
- how long the vehicle is parked at home
- your home’s electrical supply
- your future plans
- your energy usage habits
- whether solar or battery systems are involved
For many Sunshine Coast households, a properly designed single-phase charging system is already more than capable of comfortably handling day-to-day charging needs.
Final Thoughts
Modern EV charging is not just about choosing the biggest charger available.
The best charging system is the one that suits the way you actually live.
At JAX Power Solutions, we help homeowners understand the practical differences between charging systems so they can make informed decisions without unnecessary complexity or overspending.
Whether you’re planning a simple overnight charging setup or a larger future-ready energy system, selecting the right charger from the beginning can make a significant difference long-term.
Written by Dan Knight
Managing Director – JAX Power Solutions
Helping Sunshine Coast locals power their homes, businesses, and EVs safely and efficiently.
