12kW Solar System Price in South Africa (2026)
A 12kW solar system from Erazon Solar costs R144 488 to R155 746 installed, including panels, battery, installation and the electrical CoC. A 12kW system suits large homes that want solar and battery to carry most of the house day and night, with room for heavy loads.
12kW solar system prices: our packages
Prices and equipment are live from our price list. Daily output is an estimate for Pretoria, based on about 5.6 peak sun hours a day.
Luxpower 12kW
- 2x Luxpower 6kW Hybrid Inverter (SNA-6000)
- MUST 5.12kWh Lithium Battery (48V 100Ah)
- MUST 10.24kWh Lithium Battery (48V 200Ah)
- 18x Canadian Solar 620W Bi-Facial Panel (11.16 kWp, about 50 kWh a day)
- 5 Year Workmanship Warranty
Sunsynk 12kW
- Sunsynk 12kW Single Phase Inverter
- MUST 5.12kWh Lithium Battery (48V 100Ah)
- MUST 10.24kWh Lithium Battery (48V 200Ah)
- 18x Canadian Solar 620W Bi-Facial Panel (11.16 kWp, about 50 kWh a day)
- 5 Year Workmanship Warranty
Deye 12kW
- DEYE 12kW Hybrid Inverter (SUN-12K-SG02HP1-EU-AM2)
- MUST 10.24kWh Lithium Battery (48V 200Ah)
- MUST 5.12kWh Lithium Battery (48V 100Ah)
- 18x Canadian Solar 620W Bi-Facial Panel (11.16 kWp, about 50 kWh a day)
- 5 Year Workmanship Warranty
What can a 12kW solar system run?
- Everything a 10kW runs
- Oven and stove plus other loads
- Aircons in several rooms
- Pool, borehole and irrigation pumps
- Longer nights on battery (around 15kWh)
If your property has a three-phase supply, a three-phase inverter is usually the better fit.
What is included in the 12kW price?
- Inverter, lithium battery and solar panels as listed
- Installation by our Pretoria-based team
- Electrical Certificate of Compliance (CoC)
- 5 Year Workmanship Warranty
- Manufacturer warranties on the equipment
What can change the final price?
- Extra batteries if you want longer backup at night
- An old or full distribution board that needs upgrading first
- Long cable runs between the roof, inverter and DB board
- Ground-mounted panels instead of a roof mount
- A three-phase supply, which needs a three-phase inverter
How does 12kW compare with other sizes?
| System size | Installed price | Battery | Panels |
|---|---|---|---|
| 5kW solar system | R62 780 – R72 780 | 5.12 kWh | 6 |
| 6kW solar system | R80 596 – R92 910 | 10.24 kWh | 8 |
| 8kW solar system | R106 400 – R108 086 | 10.24 kWh | 10 |
| 10kW solar system | R109 402 – R123 841 | 10.24 kWh | 12 |
| 12kW | R144 488 – R155 746 | 15.36 kWh | 18 |
| 16kW solar system | R192 175 – R195 775 | 20.48 kWh | 24 |
| 20kW solar system | R246 222 | 28.6 kWh | 36 |
Not sure which size you need? Try our solar calculator, see inverter and battery backup options, or read how our hybrid solar installation works.
12kW solar system: common questions
How much does a 12kW solar system cost?
Live installed prices for our 12kW packages are on this page, with 18 panels, about 15kWh of battery, installation and the CoC.
How much battery comes with 12kW?
Our 12kW packages combine a 10.24kWh and a 5.12kWh battery, about 15kWh in total. The exact batteries per package are listed here.
Can I go off the grid with 12kW?
Many homes can run mostly on solar with this size, but going fully off-grid depends on winter usage. We size that from your bills.
Do I need a three-phase system instead?
Only if your home has a three-phase supply. We check your DB board at the assessment.
Get a price for a 12kW system on your home
Tell us roughly what you spend on electricity and your suburb. We confirm the right size before you pay anything.