Quick Answer: R55,000 — R380,000
A complete solar system in South Africa costs between R55,000 (3kW basic) and R380,000 (15kW with battery). The most popular size — a 5kW system — costs R85,000 — R130,000 without a battery.
System Prices by Size
| Size | Price (no battery) | Monthly Saving | Payback |
|---|---|---|---|
| 3 kW | R55,000 — R85,000 | R800 | 5-8 yrs |
| 5 kW | R85,000 — R130,000 | R1,500 | 4-7 yrs |
| 8 kW | R120,000 — R185,000 | R2,500 | 4-6 yrs |
| 10 kW | R150,000 — R250,000 | R3,500 | 3-6 yrs |
| 15 kW | R220,000 — R380,000 | R5,000 | 3-5 yrs |
Battery Prices (Add-On)
Batteries are optional. Without them, solar only works during daytime. With them, you get load shedding coverage.
| Capacity | Price | Backup Duration |
|---|---|---|
| 5 kWh (basic backup) | R25,000 — R45,000 | 3-5 hours light usage |
| 10 kWh (standard) | R45,000 — R75,000 | 6-10 hours mixed usage |
| 15 kWh (full home) | R65,000 — R110,000 | 10-15 hours full home |
| 20 kWh+ (extended) | R85,000 — R150,000 | 15+ hours or overnight |
What's Included in the Price?
A "complete system" price typically includes:
- Solar panels (the biggest cost — 40-50% of total)
- Inverter (converts DC solar power to AC household power — 20-30%)
- Mounting rails and hardware (5-10%)
- Wiring, breakers, and DB board changes (5-10%)
- Installation labour (10-15%)
- Certificate of Compliance (COC) — required by law
Not typically included: Battery storage (quoted separately), roof repairs, electrical upgrades, municipality approval for grid-tied systems.
What Affects Your Price?
- System size — biggest factor. A 10kW system costs roughly double a 5kW system.
- Panel brand — Tier 1 panels (JA Solar, Canadian Solar, LONGi) cost 10-30% more than Tier 2.
- Inverter brand — Deye is cheapest (R12K-R18K for 5kW). Victron is most expensive (R25K-R38K).
- Battery — adds R25K-R150K depending on capacity. This is where costs escalate fast.
- Roof complexity — flat roofs are cheaper to install on. Tiled/pitched roofs need rail adapters.
- Location — Cape Town installers tend to charge more than Gauteng due to demand and logistics.
- Grid-tied vs hybrid — grid-tied (no battery) is cheapest. Hybrid (battery-ready or with battery) costs more but offers load shedding protection.
Section 12B Tax Incentive
Individuals can claim a 25% tax deduction on the cost of new solar panels (not batteries or inverters — panels only) installed between 1 March 2023 and 28 February 2025. The deduction is capped at R15,000 per year.
For a 5kW system with R50,000 in panel costs, this saves you R12,500 on your tax return. Check with your tax advisor for current status — the incentive may have been extended.
How to Get the Best Price
- Get 3+ quotes. Prices vary 20-40% between installers for the same system.
- Don't buy the cheapest quote blindly. Check: installer SAPVIA membership, COC included, warranty terms, inverter brand, panel tier.
- Buy more panels than you think you need. Eskom tariffs increase 12%+ per year. A system that covers 80% of your usage today will cover 60% in 5 years as your bill grows. Oversizing by 20% costs R10K-R20K now but saves much more long-term.
- Consider finance. Monthly repayments are often less than your Eskom saving — making solar cash-flow positive from day 1.