1. What is a Solar Panel Usage Calculator?

Definition: This calculator estimates the energy production of solar panels in kilowatt-hours based on panel power and usage time.

Purpose: It helps homeowners and solar installers determine potential energy generation from solar panel systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Energy produced (kilowatt-hours)
• \( P \) — Panel power (watts)
• \( t \) — Usage time (hours)

Explanation: The panel power multiplied by usage time gives watt-hours, which is converted to kilowatt-hours by dividing by 1000.

3. Importance of Solar Energy Calculation

Details: Accurate energy calculations help in sizing solar systems, estimating savings, and meeting energy needs.

4. Using the Calculator

Tips: Enter the panel power in watts and usage time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Is this for a single panel or entire system?
A: This calculates for a single panel. Multiply by number of panels for system total.

Q2: What's a typical panel power rating?
A: Most residential panels are 250-400 watts, with 300W being common.

Q3: Should I use peak sun hours or actual hours?
A: For daily estimates, use peak sun hours (typically 4-6 in most locations).

Q4: How do I account for system inefficiencies?
A: Multiply result by 0.75-0.85 to account for real-world losses.

Q5: Can I calculate monthly production?
A: Yes, calculate daily production then multiply by 30, or use monthly sun hours.