1. What is a Solar Energy Generation Calculator?

Definition: This calculator estimates the daily energy output of a solar panel system based on panel power, sunlight hours, and system performance.

Purpose: It helps homeowners, solar installers, and energy professionals estimate solar system performance and potential savings.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy generation (kWh)
• \( P \) — Panel power (kW)
• \( H \) — Daily sunlight hours (hours)
• \( PR \) — Performance ratio (decimal, typically 0.75)

Explanation: The panel power is multiplied by sunlight hours and adjusted by the performance ratio to account for system losses.

3. Importance of Solar Energy Calculation

Details: Accurate energy generation estimates are crucial for system sizing, financial planning, and understanding return on investment for solar installations.

4. Using the Calculator

Tips: Enter the panel power in kW, average daily sunlight hours, and performance ratio (default 0.75). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is performance ratio?
A: The performance ratio accounts for system losses from temperature, wiring, inverters, dirt, and other factors (typically 0.75-0.85).

Q2: How do I find daily sunlight hours?
A: Use local solar irradiance data or online tools like NASA's solar database for your location.

Q3: Should I use peak or rated panel power?
A: Use the rated power (STC) from the panel specifications (in kW).

Q4: Is this for daily or annual production?
A: This calculates daily production. Multiply by 365 for annual estimates.

Q5: Does this account for seasonal variations?
A: No, use average daily sunlight hours for your location and season.