Solar Panel System Calculator Nigeria — Size & Cost Estimator
Calculate the right solar system size for your Nigerian home or business. Get panel count, battery size, inverter rating and cost estimate in Naira.
Select Your Appliances
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hrs
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0W
Total Load
0 kW
Solar Panels Needed
0 kWh
Battery Capacity
0 kVA
Inverter Size
Estimated System Cost
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How Solar Sizing Works
- Total Daily Energy = Sum of (Wattage × Hours/Day) for all appliances
- Panel kW needed = Daily energy ÷ Peak sun hours ÷ 0.8 efficiency
- Battery kWh needed = Nighttime load × Backup hours ÷ 0.8 DoD
- Inverter kVA = Total peak load × 1.25 safety factor
Extended
Solar System Designer
Detailed sizing, year-by-year cost vs savings chart, and financing options
Detailed System Sizing Summary
Based on your appliance selection above. Adjust appliances and sun hours to refine the estimate.
Year-by-Year: Solar vs Grid+Generator Cost
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Solar Financing Calculator
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Professional
Solar Project Planner
Regional sun hours, efficiency losses, maintenance schedule, and ROI analysis
Nigerian Regional Peak Sun Hours
Wh/day
From appliance selector above Real-World System Efficiency Losses
kWp
Component Replacement Timeline
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ROI at Different Tariff Escalation Rates
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Frequently Asked Questions
How many solar panels do I need for my Nigerian home?
A typical 2-bedroom flat in Nigeria uses 300–600W of continuous load. A 1.5kW solar system (3 x 550W panels) can comfortably power fans, lights, TV, and a fridge. If you want to add air conditioning, you need at least 3kW (6 panels) plus larger batteries.
What size inverter do I need?
Your inverter should be sized at 25% above your total load to handle surge currents (especially from fridges and pumps). A 2kW system needs a 2.5kVA inverter minimum. Always buy an inverter from a reputable brand available in Nigeria such as Victron, Luminous, Felicity, or Simba.
How long do solar batteries last in Nigeria?
Lithium (LiFePO4) batteries last 10–15 years at 80% Depth of Discharge. Tubular deep-cycle batteries last 5–7 years at 50% DoD. Flat-plate batteries last 2–3 years. While lithium batteries cost more upfront, they offer better long-term value in Nigerian conditions.
What is the payback period for solar in Nigeria?
With generator fuel at ₦700–₦900/litre and grid electricity unreliable, most Nigerian homes recover their solar investment in 3–5 years. After payback, you get free electricity for 10+ more years from the panels.
Can I get solar financing in Nigeria?
Yes. Several companies offer hire-purchase solar installations: Rensource, Lumos Solar, Greenlight Planet, and Rural Electrification Agency (REA) programs. Some banks also offer green energy loans. Always compare total cost of ownership before committing.