Calculate the solar system your home actually needs.
Add the appliances you want to power. We will estimate your daily energy use, inverter size, lithium battery capacity and 550 W panel count using Nigerian solar conditions.
LED light bulbs
10 W each
Fans
75 W each
Televisions
100 W each
Refrigerators
150 W each
Laptops
65 W each
Internet router
15 W each
1 HP inverter AC
900 W each
Water pump
750 W each
How this Nigerian solar calculation works
1. Load
We add the running watts of appliances that may operate together and allow for the largest motor-starting surge.
2. Storage
Daily kWh is divided by 80% usable capacity to protect a LiFePO4 battery from being designed at its absolute limit.
3. Solar
Panel count uses 4.2 peak-sun-hours and a 20% allowance for heat, dust, wiring and inverter losses.
This is a planning estimate, not a final electrical design. Roof shade, appliance nameplate ratings, three-phase loads, cable runs and future expansion can change the specification. Joshville staff confirm these details before installation.
Frequently asked questions
How do I calculate my solar load in Nigeria?
Multiply each appliance's wattage by its quantity and daily running hours, then add the results. This gives daily watt-hours; divide by 1,000 for kWh. Inverter sizing must also allow for appliances that start with a power surge.
What size inverter do I need for my home?
Your inverter must carry the appliances that can run together and survive the largest motor-starting surge. This calculator recommends the next common inverter size above that estimated design peak, but an installer should confirm phase, surge and wiring requirements.
How many solar panels do I need in Nigeria?
A practical first estimate divides daily energy use by the expected daily output of one panel. This calculator assumes 550 W panels, 4.2 peak-sun-hours and a 20% system-loss allowance; roof direction, shade and location can change the final count.