Do you actually need a 7kW EV charger? Probably not — here is the honest test.
Charger sellers won't tell a low-mileage driver to skip the box. We will. For a lot of homes a normal powerpoint is genuinely enough, and where a wallbox does make sense, a 7kW single-phase unit is almost always all you need. Here's how to spend less, not more.
Reviewed by Josh, Mission Green Energy Team · Updated July 2026
Do you actually need one?
The honest short answer.
Maybe not. If you drive modest daily distances and can reach a power point, a standard socket may already cover you. Where a dedicated charger does make sense, a 7kW single-phase unit is almost always enough — and a 22kW 3-phase upgrade is wasted money for typical drivers.
This is the guide charger sellers don't want to write, because it starts by telling a chunk of readers to spend nothing. A wallbox is a nice piece of kit — but it's only worth $2,000-plus of your money if your driving actually needs it. Plenty of Australians drive well within what a normal powerpoint delivers overnight, and for them the honest advice is to hold off on the box.
A powerpoint may be all you need if:
- Your daily driving is modest — a normal 10A socket adds roughly 10 to 15 km of range per hour, which over a full overnight charge is around 100 to 150 km, more than most people drive in a day.
- You have a driveway or garage socket you can reach safely, and you rarely arrive home near empty.
- You're happy to have an electrician check the existing circuit is sound and not sharing a heavily loaded line before you rely on it.
A dedicated 7kW charger earns its place if:
- You do high daily kilometres and often need a fast overnight refill — around 7kW adds roughly 40 km of range per hour.
- You want the convenience and safety of a fixed, weatherproof unit rather than a trailing lead.
- You plan to charge from your solar during the day and want scheduling and smart controls.
If a powerpoint covers your driving, skip the box for now — that's the honest call, and we'll make it. If a charger does make sense, read on: the money question isn't the charger's power rating, it's your switchboard. See how EV charging fits the bigger picture in our home electrification guide, or get your own situation checked in a free assessment.
What actually decides
whether you need a charger?
It comes down to your driving and your home's wiring — not the brand on the box. Five things decide it, and the charger's headline power rating barely features.
Your daily kilometres
This is the single biggest factor. A powerpoint's ~10-15 km/hour overnight suits low-mileage drivers; if you regularly do long daily distances and come home low, a 7kW unit's ~40 km/hour makes the overnight refill reliable.
What your car can accept
Most EVs cap their onboard AC charging around 7 to 11kW. That's why a 7kW charger is the sweet spot — a bigger, pricier charger simply can't push more into a car that won't take it.
Single vs 3-phase supply
Most Australian homes are single-phase, and a 7kW single-phase charger refills most EVs overnight. A 22kW 3-phase charger needs 3-phase power your home likely doesn't have — and your car can't use it anyway.
Your switchboard & cabling
The real cost variable. A charger far from the board, a long cable run, or a switchboard that needs upgrading for extra capacity moves the total far more than the charger brand does.
Solar & when you charge
If you have solar, charging in the daytime sun is far cheaper than the grid, and a smart charger can schedule it. Charging in the evening peak instead can spike a demand tariff.
Where you park
Off-street parking with a nearby socket makes a simple install (or even a powerpoint) easy. Apartments, shared parking or a detached garage add cost and, in strata, an approval step — more on both below.
What does a charger
really cost to install?
There's no single install price — the charger unit is only part of it. The hidden costs are the switchboard, the cable run, and the compliance paperwork you should never skip.
A quality 7kW home charger unit is commonly in the low thousands, but the installed cost swings on the site work, not the badge on the box:
- The switchboard is the big variable. If your board needs upgrading to add capacity for a charger, that's often in the order of $800 to $2,500 depending on scope — and it's only sometimes needed, not every job. Get a real quote rather than trust a flat figure; anyone quoting one price sight-unseen is guessing.
- Cable runs and trenching add up. A charger a long way from the switchboard, or trenching out to a detached garage, costs more than a short run beside the board.
- Compliance is not optional. A hardwired charger is fixed electrical work. In NSW that legally requires a Certificate of Compliance for Electrical Work (CCEW) issued by a licensed electrician. Without proof of compliant work you risk both your warranty and a home-insurance claim — so demand the certificate for your records. (Source: NSW Government — electrical compliance requirements.)
Two honest points that cut against the usual sales pitch:
- We won't quote you a fixed dollar figure here. Because the switchboard and cabling do more to the total than the charger model, any headline "$X installed" number online is an estimate that won't match your site. The honest way to compare is a real quote for your home.
- The cheapest compliant option might be a powerpoint. If your driving is modest, a properly checked existing socket can be the sensible spend — and we'll say so rather than upsell a wallbox.
Want it costed properly? Get it quoted for your home in a free assessment, or see how the numbers stack up against solar and battery in our is solar worth it guide.
When should you skip it
(or just use a powerpoint)?
Sometimes the honest advice is to not buy the box, buy a smaller/simpler setup, or wait. Here are the clear cases where a $2,000-plus wallbox is unlikely to earn its keep — the ones a charger-seller's funnel won't tell you.
You're a low-mileage driver
If your daily driving fits inside a powerpoint's ~100-150 km overnight, a wallbox buys you speed you don't need. Have an electrician check the socket and circuit, and keep your money.
You're tempted by 22kW / 3-phase
Most EVs cap AC charging around 7 to 11kW, so a 22kW 3-phase charger can't charge your car any faster. Paying to add 3-phase power just to run one is money most drivers will never get back.
A big switchboard upgrade is needed
If a costly board upgrade would push the total well past the value of the convenience, it can be worth waiting — or starting with a powerpoint — until you're doing the kilometres to justify it.
You don't have solar yet
The cheapest EV kilometres come from your own daytime solar. If saving money is the goal, sorting solar first often does more for your running costs than the charger itself.
Borrowing at a high rate
Finance can make a genuinely needed charger affordable, but if the interest outweighs the convenience and running-cost savings, the loan quietly turns a nice-to-have into a loss. We'll say so rather than push the finance.
You're on a demand tariff
Charging a 7kW box in the evening peak can spike a demand tariff and add cost. If that's your plan, a smart charger scheduled to off-peak or solar hours matters more than the charger's raw power.
Do I need 3-phase power
for an EV charger?
Almost certainly not. Most Australian homes are single-phase, a 7kW single-phase charger refills most EVs overnight, and your car probably can't use more anyway — so a 3-phase upgrade is wasted for typical drivers.
This is where a lot of money gets wasted. Most Australian homes are single-phase, and a 7kW single-phase charger fully refills most EVs overnight — a full charge from near-empty comfortably covers a typical daily commute. So for the vast majority of drivers, a 3-phase supply simply isn't required.
The clincher is the car, not the wall. Most EVs cap their onboard AC charging around 7 to 11kW. That means a 22kW 3-phase charger physically cannot push more energy into your car than it's built to accept — the extra capacity sits idle. Paying to upgrade a single-phase home to 3-phase purely to run a bigger charger is an expensive change most people will never benefit from.
Three-phase does have its place: very high daily mileage, several EVs charging at once, or a home that already has 3-phase for other loads. But that's the exception, not the rule. If a seller pushes a 22kW charger onto a normal single-car household, treat it as a red flag. Our rule is simple: we confirm what your home actually has and what your car can actually accept before recommending a charger — never the other way around. See how EV charging sits alongside heat pumps and induction in our electrification guide.
Will my insurance cover
an EV charger fire?
Only if the work was done compliantly — which is exactly why you insist on the paperwork. A properly installed charger is a low fire risk; the danger comes from non-compliant, DIY or extension-lead charging.
It's a fair worry, because lithium-battery fires get a lot of headlines. But it's worth being precise about what's actually burning. Fire authorities report that home EV charging is a relatively low fire risk compared with cheap e-bikes and e-scooters, which dominate the lithium-fire statistics. The real hazards fire services flag are non-compliant chargers, DIY installs, and charging through extension leads — not a properly installed, professionally certified unit.
That's why the compliance paperwork matters so much for your cover. A hardwired charger is fixed electrical work, and in NSW that work legally requires a Certificate of Compliance for Electrical Work (CCEW) issued by a licensed electrician. If wiring wasn't done and certified properly, an insurer can decline a claim, and your product warranty can be affected too. Note the honest wording: it doesn't automatically void your cover, but non-compliant work is a genuine risk to it. (Source: NSW Government.)
So the safe move is simple: only ever use a licensed electrician, and demand the compliance certificate for your records. We only use licensed electricians and hand you the compliance paperwork, so your cover and warranty are protected. You can read how we approach installation on our electrification page.
Can my strata stop me
installing an EV charger?
In NSW, it's harder for a strata scheme to block you than most owners assume. EV charging counts as "sustainability infrastructure", which lowers the voting bar considerably.
If you're in an apartment, this is the fear that stops many people before they start — and it's often overblown. Under section 132B of the Strata Schemes Management Act 2015 (NSW), EV charging counts as sustainability infrastructure, which means a proposal to install it passes unless 50% or more of the votes cast are against it. That's a far lower bar than the old three-quarters majority a single objector could hide behind. A more recent NSW reform also stops owners corporations from blocking sustainability infrastructure on purely aesthetic grounds, except in heritage cases.
It isn't automatic, though. You'll still need to put up a proper proposal — covering the wiring, metering (so you pay for your own power), cost allocation and safety — and the detail of the rules differs in other states. But a flat "no" from the committee is frequently not the final word, and knowing the vote threshold changes the conversation.
The practical path is a well-prepared proposal plus a licensed electrician's plan for the wiring and metering. We can help you scope a compliant install to put to your strata — and we'll be honest about whether a shared charger or even a powerpoint is the simpler first step. (Source: Strata Schemes Management Act 2015 (NSW) s132B.)
Which option
is right for you?
There's no universal "best" — the right setup depends on your driving, your home and whether you're pairing it with solar. Once you've decided how much charging you actually need, here's where to plan the rest.
Charge from your own solar
The cheapest kilometres come from daytime sun. If you don't have panels yet, our is solar worth it in 2026 guide runs the honest numbers before you add a charger on top.
Add a battery for night charging
Charging after dark? A home battery can store cheap daytime solar for evening top-ups. See whether it pays for you in is a home battery worth it — including when the answer is "not yet".
Compare the whole system
EV charging works best as part of a plan. Use our compare systems tool to weigh solar, battery and charging together, and check what rebates you qualify for on our rebates & incentives page.
So — do you actually need one?
Here's the recommendation we'd give a friend: check your daily driving first, then your switchboard — and be open to hearing "a powerpoint will do".
If you do real daily kilometres, often come home low, and want a reliable overnight refill, a 7kW single-phase charger is very likely worth it — and it's almost certainly all you need, whatever a seller says about 22kW. If your driving is modest and you can reach a checked socket, a powerpoint may genuinely be enough, and the honest answer is to skip the box for now. Most people sit somewhere in between, and the only way to know which side of the line you're on is to weigh your actual driving against your actual switchboard — not a brochure average. Whatever you do, only use a licensed electrician and get your compliance certificate.
Do you need an EV charger?
Your questions, answered.
For a lot of low-mileage drivers, a standard powerpoint is genuinely enough — and no charger seller will tell you that. Charging from a normal 10A wall socket (often called trickle or granny charging) adds only roughly 10 to 15 km of range per hour, but over a 10-hour overnight charge that is around 100 to 150 km — more than most Australians drive in a day. If you do short daily trips, have a driveway or garage socket, and rarely come home near empty, a powerpoint can cover you without spending a cent on a wallbox. You start to genuinely need a dedicated 7kW charger when your daily driving is high, you often return with a low battery and need a fast overnight top-up, or you cannot safely reach a socket. Ask an electrician to check the existing circuit is in good condition and not sharing a heavily loaded line before you rely on it long term. If a powerpoint covers your driving, the honest advice is to skip the box for now — Mission Green will tell you if that is your situation.
A 7kW single-phase charger is the sweet spot for most Australian homes, and it is worth it if you drive enough to need a reliable overnight refill. At around 7kW it adds roughly 40 km of range per hour, so a full overnight charge easily covers a typical daily commute and then some — and most EVs cap their onboard AC charging around 7 to 11kW anyway, so a bigger, more expensive charger will not charge your car any faster. It is worth it when you do real daily kilometres, want the convenience and safety of a fixed unit, or plan to charge from solar during the day. It is less worth it if you are a genuinely low-mileage driver a powerpoint already covers, or if a large switchboard upgrade would push the total cost well past the value of the convenience. The honest test is your daily driving and your switchboard, not the charger's headline power. Mission Green will run those numbers and tell you if a simpler option makes more sense.
Almost certainly not. Most Australian homes are single-phase, and a 7kW single-phase charger fully refills most EVs overnight, so for typical driving a 3-phase supply is not required. Because most EVs cap their onboard AC charging around 7 to 11kW, a 22kW 3-phase charger cannot push more into the car than it can accept — the extra capacity is wasted for the vast majority of drivers. Upgrading a single-phase home to 3-phase purely to run a bigger charger is an expensive change that most people will never get the benefit of. Three-phase can make sense in specific cases — very high daily mileage, several EVs charging at once, or a home that already has 3-phase and other 3-phase loads — but it is the exception, not the rule. If a seller pushes a 22kW charger for a normal single-car household, that is a red flag. Mission Green will confirm what your home actually has and what your car can actually accept before recommending anything.
There is no single install price, because the hardware is only part of it — the site work is where the real variation sits. A quality 7kW home charger unit itself is commonly in the low thousands, but the installed cost depends heavily on how far the charger is from the switchboard, whether the cable run is simple, and above all whether your switchboard needs upgrading. A switchboard upgrade to add capacity for a charger is often in the order of $800 to $2,500 depending on scope, and you should get a quote rather than trust a flat figure — it is only sometimes needed, not every job. Other honest cost drivers are long or difficult cable runs, trenching to a detached garage, and load management if your supply is tight. Because the hidden switchboard and cabling costs swing the total more than the charger brand does, the only reliable way to know your number is a site-specific quote where Mission Green tells you the full cost, including whether a powerpoint or a smaller solution would do.
Only if the work was done compliantly — which is exactly why you should insist on the paperwork. A hardwired EV charger is fixed electrical work, and in NSW that work legally requires a Certificate of Compliance for Electrical Work (CCEW) issued by a licensed electrician. Non-compliant or DIY wiring is a genuine fire risk and can affect both your product warranty and a home-insurance claim, because insurers can decline cover where electrical work was not carried out and certified properly. So the safe move is simple: only ever use a licensed electrician, and demand the compliance certificate for your records. It is worth knowing that fire authorities report home EV charging is a relatively low fire risk compared with cheap e-bikes and e-scooters — the danger comes from non-compliant chargers, DIY installs and extension-lead charging, not from a properly installed unit. Mission Green only uses licensed electricians and gives you the compliance paperwork, so your cover and warranty are protected.
In NSW, it is now much harder for a strata scheme to stop you than most owners think. Under section 132B of the Strata Schemes Management Act 2015, EV charging counts as sustainability infrastructure, which means a proposal to install it passes unless 50% or more of the votes cast are against it — a far lower bar than the old three-quarters majority. A more recent reform also stops owners corporations from blocking sustainability infrastructure on purely aesthetic grounds, except in heritage cases. You will still need to bring a proper proposal covering wiring, metering, cost allocation and safety, and rules differ in other states, so it is not automatic — but a flat no from the committee is often not the final word. The practical path is a well-prepared proposal plus a licensed electrician's plan for the wiring and metering. Mission Green can help you scope a compliant install to put to your strata, and will be honest about whether a shared or powerpoint solution is the simpler first step.