1. What is a Solar Power Need Calculator?

Definition: This calculator estimates the solar power system size needed based on your daily energy consumption and available solar hours.

Purpose: It helps homeowners and businesses determine the appropriate solar panel capacity for their energy needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Solar power need (kW)
• \( U \) — Daily energy use (kWh)
• \( H \) — Peak solar hours per day (h)

Explanation: The daily energy consumption is divided by the average peak solar hours to determine the required system size.

3. Importance of Solar Power Calculation

Details: Proper sizing ensures your solar system meets your energy needs while avoiding oversizing and unnecessary costs.

4. Using the Calculator

Tips: Enter your average daily electricity usage in kWh and your location's average peak solar hours (default 5h). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are peak solar hours?
A: The equivalent number of hours per day when solar irradiance averages 1,000 W/m². This accounts for variations in sunlight intensity.

Q2: How do I find my daily energy use?
A: Check your electricity bill for monthly kWh usage, then divide by 30 for daily average.

Q3: What's a typical solar hours value?
A: Most locations range 3-6 peak hours. Southern areas typically have more than northern areas.

Q4: Does this include system losses?
A: No, consider multiplying the result by 1.2-1.3 to account for typical system inefficiencies.

Q5: How does this relate to number of panels?
A: Divide the kW result by your panel's kW rating (e.g., 0.3kW for 300W panels) to estimate quantity needed.