Going Solar in South Africa: Costs, Savings, and Break-Even
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With Eskom tariff increases averaging 12–15% per year, solar power in South Africa is no longer just an environmental choice — it is a financial one. A typical residential solar system pays for itself in 4–7 years, then generates essentially free electricity for another 15–20 years.
What a Typical System Costs
A 5kW system (sufficient for a modest household) costs R80,000–R150,000 installed. A 10kW system with battery backup (for load shedding independence) costs R200,000–R350,000. Prices have been declining 10–15% per year as technology improves.
The Break-Even Calculation
The key insight: your savings grow each year because Eskom tariffs increase. Year 1 savings might be R24,000, but by year 5 they could be R38,000 — on the same system producing the same energy. This accelerating payback is unique to solar in South Africa.
Panel Degradation
Solar panels degrade approximately 0.5% per year. After 25 years (typical warranty period), output is still 87.5% of original. This is minimal and already factored into break-even calculations.