How much does it cost to run an LED light bulb for 24 hours?

he cost of running an LED light bulb for 24 hours depends on its wattage, your local electricity rate, and the duration of use. Here's a simple way to estimate the cost:

Calculation Formula

1. Find the bulb's energy consumption (in kilowatt-hours):

   $$\text{Energy Consumption (kWh)} = \frac{\text{Wattage of the bulb (W)}}{1000} \times \text{Hours of use}$$

2. Multiply by the electricity rate (in pence or cents per kWh):

   $$\text{Cost} = \text{Energy Consumption (kWh)} \times \text{Electricity Rate}$$

Example Calculation (UK Rates)

Let’s assume:

• A typical LED bulb has a wattage of 10W.
• The average UK electricity rate is 30 pence per kWh.
• Use duration: 24 hours.

1. Energy Consumption:

   $$\frac{10}{1000} \times 24 = 0.24 \, \text{kWh}$$

2. Cost:

   $$0.24 \, \text{kWh} \times 30 \, \text{pence/kWh} = 7.2 \, \text{pence}$$

Summary of Costs

• A 10W LED bulb costs approximately 7.2 pence (or £0.072) to run for 24 hours at UK average electricity rates.
• If you use a higher or lower wattage bulb, the cost will scale proportionally.

Why LEDs Are Cost-Efficient

Compared to traditional incandescent bulbs, LEDs use significantly less energy to produce the same amount of light. This efficiency makes them an excellent choice for reducing electricity bills over time.