1. What is a Solar Power Installation Calculator?

Definition: This calculator estimates the size of solar panel system needed for a home based on annual electricity consumption.

Purpose: It helps homeowners determine the appropriate solar installation size to meet their energy needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Install Size — Solar system size in kilowatts (kW)
• Annual kWh — Your home's yearly electricity consumption in kilowatt-hours
• 1200 — Average annual production factor (kWh per kW of solar panels)

Explanation: The formula divides your annual usage by the average solar production to determine the system size needed.

3. Importance of Proper Sizing

Details: Correct sizing ensures your solar system meets your energy needs without over- or under-producing, maximizing return on investment.

4. Using the Calculator

Tips: Enter your home's annual electricity usage in kWh (found on your utility bills). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 1200 in the formula?
A: This represents average annual production (kWh) per kW of solar panels, accounting for sunlight hours and system efficiency.

Q2: Where do I find my annual kWh usage?
A: Check your electricity bills - most show annual usage, or sum 12 monthly bills.

Q3: Should I adjust the 1200 factor?
A: This is an average. Use 1000-1100 for northern areas, 1300-1400 for sunnier southern locations.

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

Q5: How accurate is this estimate?
A: It provides a good starting point, but consult a solar professional for precise sizing.