1. What is a Solar Calculator for South Africa?

Definition: This calculator estimates the annual energy output of a solar PV system in South Africa based on system size.

Purpose: It helps homeowners and businesses estimate potential solar energy production for planning and investment decisions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{kWh} \) — Annual energy output (kilowatt-hours)
• \( \text{Size} \) — Solar PV system size (kilowatts)
• \( 5 \) — Average daily sunlight hours in South Africa
• \( 365 \) — Days per year

Explanation: The formula multiplies system size by average daily production (5 hours) and days in a year.

3. Importance of Solar Energy Calculation

Details: Accurate energy production estimates help determine system sizing, ROI calculations, and energy savings potential.

4. Using the Calculator

Tips: Enter your solar PV system size in kilowatts (kW). The result shows estimated annual production in kWh.

5. Frequently Asked Questions (FAQ)

Q1: Why 5 hours for South Africa?
A: South Africa averages about 5 peak sun hours daily, though this varies by location (higher in Northern Cape, lower in coastal areas).

Q2: Is this actual or estimated production?
A: This is an estimate. Actual production depends on panel orientation, shading, temperature, and system efficiency.

Q3: Should I use kW or kVA for system size?
A: Use kW (kilowatts) for this calculation as it represents real power output.

Q4: How accurate is this estimate?
A: It provides a good baseline estimate. For precise calculations, consult a solar professional with local data.

Q5: Does this account for seasonal variations?
A: No, this uses annual averages. Production will be higher in summer and lower in winter months.