1. What is a Solar Generation Calculator for the UK?

Definition: This calculator estimates annual solar electricity generation based on system size using a standard UK multiplier.

Purpose: Helps homeowners and businesses estimate potential solar energy production for planning and investment decisions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Generation — Estimated annual output (kWh)
• kW — Installed system size in kilowatts
• 850 — Standard UK multiplier (kWh per kW per year)

Explanation: The formula provides a typical estimate based on average UK sunlight conditions.

3. Importance of Solar Generation Estimation

Details: Accurate generation estimates help determine system payback period, carbon savings, and energy bill reductions.

4. Using the Calculator

Tips: Enter your planned or existing solar PV system size in kW. The result shows estimated annual generation in kWh.

5. Frequently Asked Questions (FAQ)

Q1: Why 850 kWh/kW?
A: This is the average annual output per kW of solar panels in the UK, accounting for weather variations.

Q2: How accurate is this estimate?
A: It's a national average - actual output depends on location, orientation, shading, and panel efficiency.

Q3: What affects solar generation most?
A: Panel orientation (south best), tilt angle (~30° ideal), and local weather conditions.

Q4: Should I use a different multiplier?
A: Southern UK might use 900, northern UK 800, but 850 is a good general estimate.

Q5: How does this translate to bill savings?
A: Multiply generation by your electricity rate (e.g., 30p/kWh) for estimated annual savings.