THE COST

 

It looks wonderful - but will it cost the earth to run?
 

Concerns about electricity use for outdoor lights are understandable, especially with rising prices. Garden lights can transform outdoor spaces, creating a bright, uplifting ambience, but no one wants high bills.

Fortunately, LED lights are very energy-efficient, often costing only a few pennies per month even with regular use.

 

Electricity calculator

Estimate your daily and monthly costs by entering the light’s wattage, usage hours, and cost per kWh (default 26.35p/kWh*, which is the maximum under the Oct-Dec 2025 price cap for typical users energy price cap). Don’t know the wattage? Check the product specification or get in touch. Below are some examples and comparisons with other household appliances.

Energy Calculator

Watts
Hours
Pence
Cost per day: 0p (£0.00)
Cost per month: 0p (£0.00)

LED - the answer

Outdoor spaces add a bright, uplifting ambience, but no one wants high electricity bills to spoil that. Luckily, LED garden lights are very cost-effective, often just a few pennies a month even with regular use. Read on for details and try our easy electricity cost calculator.

 

Example Costs

Product Type Wattage (W) Avg. Hours of Use Daily Cost* Monthly Cost*
5m Festoon Lights, 200 LEDs 3.1W 6 0.5p 15.29p (£0.15)
5m Festoon Lights, 60 LEDs 3.5W 6 0.57p 17.27p (£0.17)
Washing Machine 2100W 0.5 28.38p £8.63
Electric Kettle 3000W 0.2 (12 mins) 16.22p £4.93

 

Outdoor/Garden Lighting Displays


We use a number of systems, below examples when using ConnectPro and ConnectGo

Example 1: Modest Display

9m ConnectPro Rope Light, 20m ConnectGo Festoon Lights, 5m ConnectGo Firefly Lights
This modest display costs just 5p a day or £1.67 a month*. Replacing the rope light (responsible for £1.02 of this cost) with fairy lights reduces costs even further.

Example 2: Comprehensive Display

6 x 2m Curtain Lights, 2 x 2m Net Lights, 30m Festoon Lights, 5m Firefly Lights
A larger display like this costs 23p a day or £7.12 a month*.

*Calculated using the July 2025 price cap of 25.73p/kWh. Source: Money Saving Expert.