Solar Power Calculator

Solar Power Formula:

\[ P = A \times \eta \times I \]

Solar Power Output (W):

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1. What is a Solar Power Calculator?

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

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:

\[ P = A \times \eta \times I \]

Where:

\( P \) — Power output (Watts)
\( A \) — Panel area (square meters)
\( \eta \) — Panel efficiency (0-1)
\( I \) — Solar irradiance (Watts/square meter)

Explanation: The panel area multiplied by efficiency and solar irradiance gives the theoretical power output under ideal conditions.

3. Importance of Solar Power Calculation

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

4. Using the Calculator

Tips: Enter the panel area in m², efficiency (default 0.15 for 15% efficiency), and solar irradiance (default 1000 W/m² for full sun). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is typical solar panel efficiency?
A: Most commercial panels range from 15-22% efficiency (0.15-0.22).

Q2: What's standard solar irradiance?
A: 1000 W/m² represents peak sunlight conditions (1 sun). Actual values vary by location and weather.

Q3: How do I find my panel area?
A: Multiply panel length by width (in meters) or check manufacturer specifications.

Q4: Does this account for real-world losses?
A: No, for actual systems, multiply result by 0.75-0.85 to account for temperature, dirt, and other losses.

Q5: How to convert Watts to kWh?
A: Multiply Watts by hours of sunlight, then divide by 1000 for kWh/day.