Solar Payback Period Calculator — Nigeria
Calculate your solar system payback period and 10-year savings. Enter system cost and monthly electricity savings.
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Nigeria electricity tariffs have risen ~15-30%/year recently years
System presets:
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Payback Period
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10-Year Net Savings
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Lifetime Net Savings
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10-Year ROI
Solar System Size Guide
| System Size | Typical Cost (₦) | kWh/Day | Best For |
|---|---|---|---|
| 1 kW | 500,000–900,000 | 4–5 | Basic lighting + phone charging |
| 3 kW | 1,200,000–2,000,000 | 12–15 | 2-bed flat, fans, TV, lights |
| 5 kW | 2,500,000–4,000,000 | 20–25 | Full 3-bed house, AC included |
| 10 kW | 5,000,000–9,000,000 | 40–50 | Large home, heavy AC use |
Frequently Asked Questions
What is the solar payback period?
The payback period is how long it takes for your energy savings to equal the cost of the solar installation. Formula: Payback (months) = Total system cost ÷ Monthly savings.
How much does a solar system cost in Nigeria?
A basic 1.5kW solar system (panels + inverter + batteries) costs ₦500,000–₦1,200,000. A 5kW system for a larger home typically costs ₦2,000,000–₦4,500,000. Prices vary by brand and installer.
How much electricity can a 1.5kW solar system generate in Nigeria?
Nigeria receives about 4.5–5.5 peak sun hours daily. A 1.5kW system generates 1.5 × 5 = 7.5 kWh/day, or about 225 kWh/month. At Band A rate (₦225/kWh), that is ₦50,625/month in savings.
Does solar make sense in Nigeria?
Yes. With unreliable grid power and high generator costs, solar + batteries is often the most economical long-term solution. Payback periods of 2–5 years are common, compared to a 15–25 year system life.
What about maintenance costs?
Solar panels have minimal maintenance (occasional cleaning). Batteries (lead-acid) need replacement every 3–5 years; lithium batteries last 8–12 years. Factor in battery replacement when calculating long-term savings.