Power Consumption Calculator UK

Power Consumption Formula:

\[ E_{\text{kWh}} = \frac{P_w \times t}{1000} \]

Energy Consumption (kWh):

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1. What is a Power Consumption Calculator UK?

Definition: This calculator estimates the energy consumption in kilowatt-hours (kWh) based on the power rating of an appliance and its usage time.

Purpose: It helps UK households and businesses understand their electricity usage and estimate energy costs.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ E_{\text{kWh}} = \frac{P_w \times t}{1000} \]

Where:

\( E_{\text{kWh}} \) — Energy consumption (kilowatt-hours)
\( P_w \) — Power consumption (watts)
\( t \) — Time in use (hours)

Explanation: The power consumption in watts is multiplied by the usage time in hours, then divided by 1000 to convert to kilowatt-hours.

3. Importance of Power Consumption Calculation

Details: Understanding energy usage helps in budgeting electricity costs, comparing appliance efficiency, and reducing carbon footprint.

4. Using the Calculator

Tips: Enter the appliance's power rating in watts and the duration of use in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my appliance's power rating?
A: Check the label on the appliance or its manual. It's usually listed in watts (W) or kilowatts (kW).

Q2: What's the average power consumption for common appliances?
A: For example: LED bulb (10W), fridge (100W), TV (200W), kettle (3000W).

Q3: How can I estimate my electricity cost from kWh?
A: Multiply the kWh result by your electricity rate (typically £0.14-£0.30 per kWh in the UK).

Q4: Does standby power consumption count?
A: Yes, many appliances consume power even when in standby mode (typically 1-5W).

Q5: How accurate is this calculation?
A: It provides a good estimate, but actual consumption may vary based on usage patterns and appliance efficiency.