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Solar Sizing & Naira Cost Calculator

Configure your appliances below to calculate exact running load, battery storage, solar array size, and real turnkey installation budgets across Nigeria.

2026 Nigerian Solar Sizing Engine

Interactive Solar Load & Cost Calculator

Select your household or office appliances to instantly calculate the required inverter size, lithium battery bank, solar panels, and estimated budget.

1. Select Your Appliances

Add or adjust quantities
LED Bulbs / Energy Savers
Approx. 10W each • Total: 60W
6
Daily Run Time:
8 hrs/day
Standing / Ceiling Fans
Approx. 65W each • Total: 195W
3
Daily Run Time:
12 hrs/day
Laptops / Workstations
Approx. 70W each • Total: 70W
1
Daily Run Time:
8 hrs/day
Starlink / 5G Wi-Fi Router
Approx. 50W each • Total: 50W
1
Daily Run Time:
24 hrs/day
Smart TV + Decoder
Approx. 120W each • Total: 120W
1
Daily Run Time:
6 hrs/day
Inverter Refrigerator
Approx. 150W each • Total: 150W
1
Daily Run Time:
18 hrs/day
Chest Deep Freezer
Approx. 250W each • Total: 0W
0
1.0 HP Inverter AC
Approx. 750W each • Total: 0W
0
1.5 HP Inverter AC
Approx. 1100W each • Total: 0W
0
1HP Submersible Water Pump
Approx. 850W each • Total: 0W
0

2. Recommended System Specifications

Calculated for 24/7 reliability in Ibadan
Recommended Inverter
1.2 kVA Pure Sine Wave
System Voltage: 12V
Running Load: 645WDaily Usage: 8.0 kWh
Recommended Battery Bank
6.5 kWh Lithium (LiFePO4)
Or Tubular Equivalent: 433Ah (approx 2x 220Ah batteries)
⚡ 10+ year lifespan with LiFePO4 Lithium (charges in ~2.5 hrs).
Solar Panels Needed
4x 550W Tier-1 Panels
Total Solar Array Power: 2200W
☀️ Based on Nigerian average peak sunshine (5.0 - 5.4 sun hours/day).
Turnkey Budget Estimate (Nigeria)
₦450,000 – ₦750,000

Includes Inverter, Lithium Battery, Panels, Mounting Racks, Breakers, Cables & Professional Installation.

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Sizing BOQ Sheet (₦3k) Buy Parts (Jumia/Konga)
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How Solar System Sizing Works in Nigeria

Sizing a solar power system in Nigeria requires careful balance between your instantaneous peak wattage (which determines your Inverter size), your daily energy consumption in Watt-hours (which dictates your Battery storage), and your sunlight recharge capacity (which dictates your Solar PV panel array).

1. Inverter Sizing (kVA)

Inverters convert DC battery power into 220V AC household electricity. We factor in a 25% safety surge headroom so inductive motor starts (like refrigerators and AC compressors) do not trip the inverter into overload.

2. Battery Bank (kWh vs Ah)

Lithium LiFePO4 batteries allow an 80% to 90% Depth of Discharge (DoD) with 6,000 cycles (10-15 years). Traditional Tubular Lead-Acid batteries only permit 50% DoD and last 2 to 3 years under heavy daily grid blackouts.

3. Solar PV Panels (Watts)

South-West Nigeria (Ibadan, Lagos, Ogun) receives an average of 5.0 to 5.4 peak sun hours daily, while Abuja and the North reach 5.8 to 6.2 hours. An undersized panel array will fail to fully recharge your batteries before dusk.

Next Steps After Calculating Your Load

  1. Audit your appliances: Replace old incandescent bulbs with 7W-9W LEDs and ensure your air conditioner uses DC inverter compressor technology.
  2. Get a physical site audit: Have a certified installer inspect your roof angle, shadow obstructions, and distribution board (DB) wiring.
  3. Request quotes: Connect with vetted installers through our network to compare hardware warranties and labor fees.