Local solar at a glance (simplified)
Peak Sun Hours (PSH) — the easiest single number to use when sizing panels — varies across Nigeria:
roughly 4.0–4.5 kWh/m²/day along the coastal south, 4.5–5.5 kWh/m²/day across the middle belt,
and 5.5–6.5+ kWh/m²/day in the far north. These simplified ranges are based on NASA POWER, PVGIS, and local resource studies.
Quick definitions — plain English
- Irradiance: the sunlight power at an instant (watts per square metre, W/m²).
- Irradiation: energy over time (kWh/m²/day) — how much sun energy fell that day.
- Sun Hours: the number of equivalent full-sun hours in a day (same as PSH when measured at 1,000 W/m²).
- PSH (Peak Sun Hours): a single number you can plug into sizing formulas — e.g., 5 PSH means the site gets energy equal to 5 hours at 1000 W/m².
CALCULATE, OPTIMIZE, AND CONTROL WITH
This tool uses local PSH (NASA / PVGIS simplified ranges) and real manufacturer datasheet numbers from panels available in Nigeria.
Enter your daily energy need and your local Sun Hours (PSH) — the app does the heavy lifting and returns clear, actionable results.
1. Panel Quantity
Number of panels required for each panel type, given your Energy/day and Sun Hours.
Formula: Panels = ⌈Energy_per_day (Wh) ÷ (Panel_Power_W × PSH)⌉
2. Total Capacity (Power)
The summed power of the selected panels (useful for inverter sizing).
Formula: Total_W = Panels × Panel_Power_W
3. Total Area
How much roof or ground space you need for each panel option.
Formula: Area_m² = Panels × Panel_Area_m²
4. Total Weight
Quick check for structural planning (roof load).
Formula: Weight_kg = Panels × Panel_Weight_kg
Who this helps: installers, farmers, everyday solar users, and solar engineers who want clear numbers — not dense papers.
All panel specs are taken from manufacturer datasheets (those common in the Nigerian market) so the calculators are grounded in real part numbers and weights.
Note: The PSH values above are simplified for quick estimates. For site-specific accuracy, you can generate precise solar data directly inside this app using the integrated PVGIS or NASA POWER sources — no extra tools needed.