Renewable Energy
Solar Panel Energy Output Calculator
☀️ E = A × G × η
Calculate solar panel energy output based on panel specs, location, and sun hours.
Panel Specifications
Panel Type
Select a panel type or choose Custom for manual entry
Panel Rated Power
W
Rated power output under STC (Standard Test Conditions)
Panel Efficiency
%
Panel efficiency (typical: 15-22%)
Panel Area
m²
Surface area of the panel (single panel)
Location & Usage
Location
Location affects average peak sun hours
Peak Sun Hours per Day
h
Average peak sun hours per day (Tropical: 5-6h, Temperate: 3-5h)
Number of Panels
panels
Total number of panels in the array
System Losses
%
Inverter, wiring, dust, temperature, and other losses
Output
0kWh
Daily Energy Output
0 kWh
per day
System Capacity
0 kW
Monthly Output
0 kWh
Annual Output
0 kWh
Performance Ratio
0%
📊 Detailed Breakdown
| Parameter | Value | Unit |
|---|
How the formula works
Energy (Wh) = Panel Power (W) × Sun Hours (h) × Number of Panels × (1 − Losses/100)
- Daily Energy (kWh) = Panel Power (W) × Sun Hours × Number of Panels × (1 − Losses/100) ÷ 1000
- System Capacity (kW) = Panel Power (W) × Number of Panels ÷ 1000
- Monthly Energy = Daily Energy × 30
- Annual Energy = Daily Energy × 365
- Performance Ratio = Actual Output / (Panel Power × Sun Hours × Panels) × 100
- Peak sun hours vary by location: Tropical (5-6h), Temperate (3-5h), Arid (6-7h), Cold (2-4h)
- Typical losses: Inverter (5%), wiring (3%), dust (2%), temperature (5%)
- Panel efficiency affects the area required for a given power output