Home Back

Solar System for the Home Calculator

Solar System Size Formula:

\[ \text{Size} = \frac{\text{Home Load}}{\text{Solar Hours}} \]

kWh/day
h

Unit Converter ▲

Unit Converter ▼

From: To:

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

Definition: This calculator estimates the size of solar system needed based on your home's daily energy consumption and average solar hours.

Purpose: It helps homeowners and solar installers determine the appropriate solar panel system size for residential energy needs.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \text{Size} = \frac{\text{Home Load}}{\text{Solar Hours}} \]

Where:

Explanation: The home's daily energy consumption is divided by the average peak sunlight hours to determine the required solar system size.

3. Importance of Solar System Sizing

Details: Proper sizing ensures your solar system meets your energy needs, maximizes return on investment, and complies with local regulations.

4. Using the Calculator

Tips: Enter your home's daily energy consumption in kWh and average solar hours (default 4.5h). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my home's daily energy consumption?
A: Check your electricity bill for monthly kWh usage and divide by 30, or use an energy monitor.

Q2: What's a typical solar hours value?
A: Most locations average 4-5 peak sun hours daily, but this varies by location and season.

Q3: Should I add extra capacity?
A: Consider adding 10-20% to account for system inefficiencies and future energy needs.

Q4: Does this include battery storage?
A: No, this calculates grid-tied system size. Battery storage requires additional calculations.

Q5: How accurate is this calculation?
A: It provides a good estimate, but consult a solar professional for precise system design.

Solar System for the Home Calculator© - All Rights Reserved 2025