1. What is Solar Power Calculation?

Definition: This calculator determines the solar panel power needed to meet your energy requirements based on sunlight availability and system performance.

Purpose: Helps homeowners and businesses properly size their solar power systems for optimal performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Required solar power (watts)
• \( L \) — Daily energy requirement (watt-hours)
• \( H \) — Peak sunlight hours per day
• \( PR \) — System performance ratio (0-1)

Explanation: The energy load is divided by the product of sunlight hours and performance ratio to determine the necessary solar panel wattage.

3. Importance of Solar Power Calculation

Details: Proper sizing ensures your solar system meets energy needs without overspending on unnecessary capacity.

4. Using the Calculator

Tips: Enter your daily energy needs in Wh, average sunlight hours (default 5), and performance ratio (default 0.75). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the performance ratio?
A: It accounts for system losses (0.75 means 25% losses from wiring, inverters, temperature, etc.).

Q2: How do I find my daily energy requirement?
A: Sum the watt-hours of all devices you'll power. Check appliance labels or use an energy monitor.

Q3: What's typical sunlight hours?
A: Varies by location (3-7 hours). Check solar maps for your area.

Q4: Should I round up the result?
A: Yes, round up to the nearest standard panel size and consider adding 10-20% for future needs.

Q5: Does this include battery storage?
A: No, this calculates panel needs. Battery sizing requires additional calculations.