1. What is a Solar Panel Estimator Calculator?

Definition: This calculator estimates the required solar panel system size in kilowatts (kW) based on annual electricity consumption in kilowatt-hours (kWh).

Purpose: It helps homeowners and businesses determine the approximate size of solar panel system needed to meet their energy needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Estimated solar panel system size (kilowatts)
• \( kWh \) — Annual electricity consumption (kilowatt-hours)

Explanation: The formula divides annual consumption by 1200, which represents the average annual production factor (kWh per kW of solar panels) in many locations.

3. Importance of Solar Panel Estimation

Details: Proper estimation helps in system sizing, cost calculation, and determining space requirements for solar panel installation.

4. Using the Calculator

Tips: Enter your annual electricity consumption in kWh (found on your utility bills). The result shows the estimated solar panel system size needed in kW.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 1200?
A: 1200 represents the average annual production factor (kWh per kW of solar panels) in many locations, accounting for sunlight hours and panel efficiency.

Q2: How accurate is this estimate?
A: It provides a rough estimate. Actual requirements may vary based on location, panel orientation, shading, and system efficiency.

Q3: Should I adjust the 1200 factor?
A: Yes, if you're in a very sunny area (use 1400-1600) or cloudy area (use 900-1100). The default 1200 works for most temperate climates.

Q4: Does this include battery storage?
A: No, this estimates grid-tied systems without storage. Add 20-30% more capacity if you want battery backup.

Q5: How do I find my annual kWh usage?
A: Check your electricity bills for the past year and sum the monthly kWh usage.