1. What is a Solar Panel Power Calculator?

Definition: This calculator estimates the power output of solar panels based on their area and efficiency.

Purpose: It helps homeowners, engineers, and solar installers determine potential energy production from solar panels.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Power output (Watts)
• \( A \) — Panel area (square meters)
• \( E \) — Panel efficiency (dimensionless, 0-1)
• 1000 — Solar irradiance (W/m², standard test condition)

Explanation: The formula calculates power by multiplying panel area by efficiency and standard solar irradiance.

3. Importance of Solar Power Calculation

Details: Accurate power estimation helps in system sizing, energy production forecasting, and financial analysis of solar installations.

4. Using the Calculator

Tips: Enter the panel area in square meters and efficiency as a decimal (e.g., 18% = 0.18). Default efficiency is set to 0.18 (18%).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical solar panel efficiency?
A: Most commercial panels range from 15-22% efficiency (0.15-0.22). Premium panels may reach 23-24%.

Q2: Why use 1000 W/m² in the formula?
A: This represents standard test conditions (STC) - the industry standard for comparing panel performance.

Q3: How do I find my panel's area?
A: Measure length × width in meters, or check manufacturer specifications.

Q4: Does this account for real-world conditions?
A: No, this is theoretical maximum. Actual output depends on temperature, shading, orientation, and weather.

Q5: How can I estimate daily energy production?
A: Multiply the result by your location's peak sun hours (typically 3-6 hours/day).