1. What is a Solar System for Home Electricity Calculator?

Definition: This calculator estimates the size of solar panel system needed based on your monthly electricity consumption and peak sunlight hours.

Purpose: It helps homeowners determine the appropriate solar system size to meet their energy needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Size} \) — Solar system size in kilowatts (kW)
• \( \text{Monthly kWh} \) — Your average monthly electricity consumption
• \( \text{Peak Hours} \) — Average daily peak sunlight hours at your location

Explanation: The formula calculates the system size needed to generate your monthly electricity usage based on average daily sunlight.

3. Importance of Proper Solar System Sizing

Details: Correct sizing ensures your system meets your energy needs without overpaying for unnecessary capacity.

4. Using the Calculator

Tips: Enter your monthly electricity usage in kWh and your location's average peak sunlight hours (default 4 hours). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are peak sunlight hours?
A: The equivalent number of hours per day when solar irradiance averages 1,000 W/m². This varies by location.

Q2: How do I find my monthly kWh usage?
A: Check your electricity bill - it typically shows your monthly consumption in kilowatt-hours.

Q3: What's a typical peak hours value?
A: Most locations range from 3-6 peak hours. 4 is a good average for many regions.

Q4: Does this account for system losses?
A: No, consider adding 10-20% to the calculated size to account for inefficiencies.

Q5: What about battery storage?
A: This calculates grid-tied systems. For off-grid systems, you'll need additional battery calculations.