1. What is a UK Energy Cost Calculator?

Definition: This calculator estimates the electricity cost based on appliance power, usage time, and current electricity rate.

Purpose: It helps UK residents understand and predict their electricity expenses for specific appliances or devices.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Cost} \) — Energy cost in pounds (£)
• \( P \) — Power consumption in watts (W)
• \( t \) — Time in hours (h)
• \( \text{Rate} \) — Electricity rate in £ per kilowatt-hour (£/kWh)

Explanation: The formula converts watts to kilowatts (dividing by 1000) then multiplies by hours and the rate to calculate cost.

3. Importance of Energy Cost Calculation

Details: Understanding energy costs helps with budgeting, comparing appliance efficiency, and identifying potential savings.

4. Using the Calculator

Tips: Enter the appliance power in watts, usage time in hours, and electricity rate (default £0.34/kWh). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the current UK electricity rate?
A: As of 2023, the average rate is about £0.34/kWh but check your energy provider for exact rates.

Q2: How do I find my appliance's power rating?
A: Check the label, manual, or specifications - typically shown in watts (W) or kilowatts (kW).

Q3: Does this include standing charges?
A: No, this calculates usage cost only. Standing charges are fixed daily costs from your provider.

Q4: Can I calculate monthly costs?
A: Yes, multiply daily usage hours by 30 or input monthly hours directly.

Q5: Why divide by 1000?
A: This converts watts to kilowatts (1 kW = 1000 W), as electricity is billed per kWh.