1. List Your Appliances
Select from our database of 50+ local Nigerian appliances. We use real wattage data, not guesses.
2. Set Usage Hours
Tell us how long you need power during the day and night. We'll handle the complex load profiles.
3. Choose Preferences
Pick your battery technology (Gel, AGM, Lithium) and the number of days you want power without sun.
4. Get Your Report
Instantly see your required Inverter kVA, Battery capacity (kWh), and the exact number of Panels needed.
The Science Behind the Sizing
Unlike generic calculators, RaySizer accounts for **Inverter Efficiency**, **Battery DoD (Depth of Discharge)**, and **Solar Irradiance Variance** in Nigerian cities like Lagos, Abuja, and Kano. Our algorithm ensures your system won't just work—it will last.
Frequently Asked Questions
How accurate is the RaySizer calculator?
Our calculator is 100% accurate because it uses specific Nigerian appliance power ratings and local solar irradiance data (kWh/kWp/day).
Why do I need to choose my battery type?
Different battery types (Lead-acid vs Lithium) have different Depth of Discharge (DoD). Lithium batteries give more usable energy, affecting the total count needed.
How does ROI analysis work?
We compare the cost of your solar system against your current monthly spend on PHCN (NEPA) and fuel for your generator.