in South Australia 2026
Charge your electric vehicle from the sun and pay near-zero per kilometre. How solar and battery storage can power your EV in SA — system sizing, costs, rebates, and real numbers.
South Australia has some of the highest EV uptake rates in Australia — and the highest electricity prices. Charging an EV from the grid at 38c/kWh adds significantly to your household bills. Charging from solar changes everything: the cost per kilometre drops to near zero, and with a battery, you can charge from solar energy even after sunset.
South Australia Focus
EV + Solar + Battery
Real Cost Numbers
How Much Does It Cost to Charge an EV from the Grid in SA?
South Australia’s electricity rate of approximately 38c/kWh is among the highest in Australia. For EV drivers, this means:
| EV Model | Battery Size | Range per Charge | Grid Cost per Full Charge (38c) | Cost per 100km (Grid) |
|---|---|---|---|---|
| Tesla Model 3 (SR) | 60 kWh | ~490 km | ~$22.80 | ~$4.65 |
| Tesla Model Y (LR) | 82 kWh | ~533 km | ~$31.16 | ~$5.85 |
| BYD Atto 3 | 60.5 kWh | ~420 km | ~$22.99 | ~$5.47 |
| Hyundai IONIQ 6 | 77 kWh | ~581 km | ~$29.26 | ~$5.03 |
| MG4 EV | 64 kWh | ~435 km | ~$24.32 | ~$5.59 |
Solar comparison: Charging the same vehicles from solar panels costs effectively $0 per kWh after your system is paid off — or approximately 4–8c/kWh on an amortised basis over 25 years. That is an 80–90% reduction in fuel cost.
What Solar System Size Do You Need to Charge an EV in SA?
Low Mileage (Under 50km/day)
Approximately 10–12 kWh EV consumption per day. A 6.6kW solar system generates enough surplus on most days to cover EV charging on top of household consumption.
Medium Mileage (50–100km/day)
Approximately 12–22 kWh EV consumption. A 10kW solar system is recommended — generates surplus sufficient to cover both household use and EV charging in SA conditions.
High Mileage (100km+ per day)
Approximately 22+ kWh EV consumption. A 10–13.2kW system paired with a 15–28kWh battery provides maximum solar coverage — including overnight charging from stored energy.
Can I Charge My EV at Night from Solar? (Battery Storage)
Standard solar generates electricity during daylight hours. Most EV owners prefer to charge overnight when the car is home and parked. This is where battery storage transforms the equation:
| System | EV kms Covered Overnight | Household Coverage | Grid Dependency |
|---|---|---|---|
| 10kW solar, no battery | 0 km (daytime only) | Daytime only | High at night |
| 10kW solar + 10kWh battery | ~60–80 km | Partial night | Medium |
| 10kW solar + 15kWh battery | ~90–120 km | Full night typical | Low |
| 10kW solar + 28kWh battery | ~180–200 km+ | Multi-day backup | Very low |
Rebates Available for Solar + EV Charging in SA 2026
STC Rebate on Solar
Federal Small-scale Technology Certificates applied upfront on your solar system — typically $1,800–$3,900 depending on system size. Reduces your upfront cost immediately.
SA Home Battery Scheme
State government subsidy on eligible battery storage. Particularly valuable for EV owners adding a large battery — we check eligibility at your free assessment.
Cheaper Home Batteries Program
Federal battery rebate stackable with the SA scheme. For EV owners adding a 15–28kWh battery, this significantly reduces the net battery cost.
Smart EV Charging: Getting the Most from Your Solar
- Solar diversion chargers (e.g. Zappi, myenergi) detect surplus solar export and divert it to EV charging — maximising self-consumption with zero grid draw
- Hybrid inverter plus battery systems can be set to charge the EV only from solar and battery, ignoring the grid entirely during peak rate periods
- Vehicle-to-Home (V2H) technology is emerging in Australia — allowing your EV battery to power your home during outages or evening peak periods
Real Numbers: What an EV Owner Saves with Solar in SA
| Scenario | Annual EV Charging Cost | Annual Household Solar Savings | Combined Annual Saving |
|---|---|---|---|
| Grid only (no solar) | ~$2,400/yr | $0 | $0 (baseline) |
| 10kW solar (no battery) | ~$1,200/yr residual | ~$2,000/yr | ~$3,200/yr better off |
| 10kW solar + 15kWh battery | ~$400/yr residual | ~$2,800/yr | ~$4,800/yr better off |
| 10kW solar + 28kWh battery | ~$100/yr residual | ~$3,500/yr | ~$5,700/yr better off |
Estimates for Adelaide SA. Assumes 38c/kWh rate, 15,000km annual driving, mixed charging profile. Actual savings vary.
Frequently Asked Questions
Yes — with a sufficiently large solar system and battery storage for overnight charging. In South Australia with 2,900+ annual sun hours, a 10kW solar system generates more than enough to cover typical household consumption and EV charging for most drivers covering under 100km per day. Adding a 15–28kWh battery extends solar coverage to overnight EV charging.
For most SA EV owners driving under 80km per day, a 10kW solar system is the recommended minimum. If you drive 100km+ per day or want comprehensive overnight coverage, combine a 10kW system with a 15–28kWh battery. We assess your driving habits and current electricity consumption at your free site assessment to right-size your system.
Charging from the SA grid at approximately 38c/kWh costs approximately $4.50–$6.00 per 100km. Charging from solar after the system is paid off costs effectively zero. On an amortised basis, solar-charged EV kilometres cost approximately 4–8c/kWh — an 80–90% saving per kilometre.
A 15kWh battery provides enough stored solar for approximately 90–120km of EV overnight charging, plus household overnight consumption. A 28kWh battery covers 150–200km of EV range overnight plus full household backup. The right size depends on your daily driving distance — we help you size this at your free assessment.
Yes — SA residents can access the federal STC rebate on solar, the SA Home Battery Scheme, and the federal Cheaper Home Batteries Program for battery storage. These rebates stack and significantly reduce the upfront cost of an EV-compatible solar-plus-battery system.
Yes — every solar system we install is wired battery-ready and designed to support future EV charger integration. We install hybrid inverters compatible with EV smart-charging wallboxes and can advise on the best solar-plus-battery package for your specific EV model and driving pattern. Call 0403 754 245 or request a free assessment online.
Solar for Your EV — Free Assessment in Adelaide SA
We size your solar and battery system around your EV. All 2026 rebates applied. Fixed-price guarantee. SAA-accredited in-house team.
