EV
EV Chargers and Solar in South Australia: The Complete Guide
South Australia is one of the best places in the world to drive on sunshine. With some of the highest solar irradiance in Australia, rising petrol prices, and a rapidly growing EV market, combining a home charger with rooftop solar is a decision that pays for itself faster here than almost anywhere else.
Whether you have already bought an electric vehicle or are planning to, getting the charging setup right from the start saves money and hassle. In this guide, we cover everything Murray Bridge and Adelaide Hills homeowners need to know about home EV charging, solar integration, and what the installation actually involves.
The SA Advantage
Why South Australia Is Perfect for Solar EV Charging
Charger Types
Home EV Charger Options Explained
There are two main approaches to charging your EV at home. Understanding the difference is key to choosing the right setup for your lifestyle and budget.
Our recommendation: For most Murray Bridge and Adelaide Hills households on single-phase power, a 7kW Level 2 wall charger is the sweet spot. It is fast enough to fully charge any EV overnight and matches well with a standard residential solar system.
Running Costs
Solar vs Grid vs Petrol: What Actually Decides It
A typical daily commute of 40km needs about 4 litres of petrol, or about 8 kilowatt-hours of electricity. That is the like-for-like comparison, and everything after it comes down to what you pay for each of those two things.
| Petrol Car | EV (Grid Power) | EV (Solar Power) | |
|---|---|---|---|
| Energy for 40km | ~4L petrol | ~8 kWh | ~8 kWh |
| What sets the price | The pump price on the day | The rate on your own electricity bill | Nothing beyond the surplus you already generated |
| What you control | Very little | Your retailer and your plan, and whether you charge off-peak | Your system size and how much of the day the car is home |
Work it out for yourself: 8 kWh a day multiplied by the rate on your own bill is what grid charging costs you, and 4 litres a day multiplied by the price you actually pay is what the petrol car costs. Charging from surplus solar takes the first of those to whatever your exported energy was otherwise worth, which is the feed-in rate rather than the retail rate.
In practice most owners charge from a mix of solar and grid, particularly through winter, so the honest answer sits between the two columns rather than at either end.
System Sizing
How Much Solar Do You Need for EV Charging?
The average Australian drives about 40km per day. A typical EV consumes roughly 15 to 20 kWh per 100km, which means your daily charging need is approximately 6 to 8 kWh.
In Murray Bridge, a 6.6kW solar system generates approximately 26 to 30 kWh per day across the year. After powering your home's base load (typically 8 to 12 kWh), you will usually have 15 to 20 kWh of excess solar, more than enough to fully charge your car for the next day's commute.
If you already have solar panels installed and are buying an EV, a smart charger that diverts excess solar to the car is often the most cost-effective path. If your solar system is undersized, we can assess whether adding panels or a battery makes more sense for your situation. Our solar installation page covers how we size a system.
Smart Features
Why a Smart Charger Makes All the Difference
Not all EV chargers are created equal. A smart charger with solar integration can dramatically increase your self-consumption and reduce grid reliance. Here are the key features to look for:
- Solar-only mode: charges exclusively from excess solar production, sending zero to the grid
- Scheduled charging: set charging windows to take advantage of off-peak rates or solar hours
- Dynamic load management: automatically adjusts charge rate to prevent overloading your switchboard
- App monitoring: track energy use, charging sessions, and solar contribution from your phone
- Energy meter integration: communicates with your solar inverter or meter for real-time optimisation
- OCPP compatibility: future-proofs your charger for smart grid and vehicle-to-grid (V2G) features
Brands We Install
Recommended EV Chargers for SA Homes
Installation
What the Installation Involves
Installing a home EV charger is a job for a licensed electrician. Here is what the process looks like with ElectricalPro:
- Site assessment: we check your switchboard capacity, available circuits, and mounting location
- Switchboard upgrade if needed: older boards may need additional circuit breakers or an RCD upgrade
- Dedicated circuit run: a separate cable run from the switchboard to the charger location (garage wall or carport)
- Charger mounting and wiring: the unit is securely mounted, wired, and connected
- Commissioning and testing: we configure Wi-Fi, app connectivity, and solar integration settings
- Compliance certificate: all work is completed to Australian Standards with documentation provided
Most installations take half a day. If a switchboard upgrade or longer cable run is required, it may extend to a full day. We provide a fixed-price quote upfront with no surprises. See our EV charger service page for more detail.
Important: Never plug your EV into a standard double adaptor or extension lead. The sustained high current draw can cause overheating and is a serious fire risk. Always use either a dedicated powerpoint on its own circuit or, better yet, a purpose-built Level 2 wall charger.
Common Questions
EV Charger and Solar FAQs
Can I charge my EV from solar panels alone?
Yes, with a smart charger like the Zappi. In "Eco" mode, it only draws power when there is surplus solar production. On a sunny day in Murray Bridge, a 6.6kW system can deliver 20+ kWh of excess energy, enough for over 100km of driving range. On overcast days, you can switch to a hybrid mode that tops up from the grid as needed.
How much does it cost to install an EV charger at home?
It depends on the charger brand, the length of the cable run and whether your switchboard needs upgrading to carry the extra load, so we quote each install rather than publish a figure. The quote covers the charger unit, the installation and the compliance certificate in one number, and we give it as a fixed price after a quick site inspection.
Do I need to upgrade my switchboard for an EV charger?
It depends on your current setup. A 7kW charger draws about 32A on a single phase, so your switchboard needs adequate capacity and a dedicated circuit breaker. Many homes built in the last 20 years can accommodate this without major changes. Older switchboards with ceramic fuses will almost certainly need upgrading first, which is a good safety investment regardless.
Is a three-phase supply better for EV charging?
Three-phase allows faster charging (up to 22kW), which can fully charge most EVs in 2 to 3 hours. However, single-phase 7kW charging is perfectly adequate for overnight or daytime solar charging. If you already have three-phase power, it makes sense to take advantage of it. If not, the cost of upgrading to three-phase is usually not justified for EV charging alone.
Will charging an EV overload my home's electrical system?
Not if it is installed correctly. A smart charger with dynamic load management monitors your home's total power draw in real-time and adjusts the EV charge rate automatically. This prevents the main breaker from tripping, even if you are running the air conditioner, oven, and charger simultaneously. This is a standard feature on all the chargers we recommend.
Can I claim any rebates for installing an EV charger in SA?
As of early 2026, there are no direct state government rebates specifically for home EV charger installation in SA. However, the federal Fringe Benefits Tax (FBT) exemption on novated leases for EVs under the luxury car tax threshold continues to make EV ownership more affordable. We recommend checking the SA Government's energy website for any new incentives that may become available.
Ready to Charge with Sunshine?
ElectricalPro installs EV chargers and solar systems across Murray Bridge and the Adelaide Hills. Get a free quote for your solar-powered EV charging setup.