1. What is a Solar Panel Capacity Factor Calculator?

Definition: This calculator determines the capacity factor of a solar panel system, which measures its actual output compared to its maximum potential output.

Purpose: It helps solar energy professionals and homeowners evaluate the performance efficiency of their solar installations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( CF \) — Capacity factor (dimensionless ratio)
• \( E_{actual} \) — Actual energy output (kWh)
• \( P \) — Rated power (kW)
• \( H \) — Total hours in period (h)

Explanation: The capacity factor shows what percentage of time the system operates at full capacity over the given period.

3. Importance of Capacity Factor Calculation

Details: Capacity factor helps assess system performance, compare different installations, and identify potential maintenance issues.

4. Using the Calculator

Tips: Enter the actual energy produced in kWh, the system's rated power in kW, and the total hours in the period. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a good capacity factor for solar panels?
A: Typical solar capacity factors range from 15-30%, depending on location and system type.

Q2: How does capacity factor differ from efficiency?
A: Efficiency measures conversion of sunlight to electricity, while capacity factor measures actual output versus potential.

Q3: Should I calculate this daily, monthly or yearly?
A: Yearly calculations are most common, but monthly can help track seasonal variations.

Q4: Why might my capacity factor be low?
A: Possible causes include shading, panel degradation, inverter issues, or poor orientation.

Q5: How can I improve my capacity factor?
A: Regular maintenance, optimal panel angles, and high-quality components can help.