1. What is a Solar Energy Generation Calculator?

Definition: This calculator estimates the annual energy output of a solar photovoltaic system based on its capacity and average daily sunlight hours.

Purpose: It helps homeowners, businesses, and solar professionals estimate potential solar energy production for planning and decision-making.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Generation \) — Annual energy output (kWh/year)
• \( kW \) — Solar system capacity (kilowatts)
• \( Hours \) — Average daily sunlight hours (peak sun hours)
• \( 365 \) — Days in a year

Explanation: The system capacity is multiplied by daily sunlight hours and then scaled up to annual production.

3. Importance of Solar Generation Calculation

Details: Accurate energy production estimates help determine system sizing, return on investment, and environmental benefits of solar installations.

4. Using the Calculator

Tips: Enter the system capacity in kW and average daily sunlight hours (default 4.5 h/day). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are "peak sun hours"?
A: Peak sun hours represent the equivalent number of hours per day when solar irradiance averages 1,000 W/m², typically 3-6 hours depending on location.

Q2: How do I find my location's sun hours?
A: Consult solar maps or databases like NREL's PVWatts for location-specific data.

Q3: Does this account for system losses?
A: No, this is a theoretical maximum. Actual production will be 10-20% lower due to inefficiencies.

Q4: What's a typical residential system size?
A: Most home systems range from 3-10 kW, depending on energy needs and roof space.

Q5: How accurate is this estimate?
A: It provides a rough estimate. For precise calculations, consider professional solar assessment tools that factor in tilt, orientation, shading, and local weather patterns.