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Energy Efficiency Ratings for Lighting

Energy Efficiency Ratings for Lighting

Whether it’s a lamp or ambient lighting, we rely on lights a lot in our home. All light bulbs and lighting appliances will come with its own energy label that displays its energy efficiency rating.

A bulb’s energy rating is calculated by dividing the number of lumens, meaning the amount of visible light, by the number of watts. This tells us how much energy it’s using to produce a satisfactory level of light.

As well as shopping for bulbs that are labelled as energy efficient, there are other things you can do to ensure your home lighting is more energy efficient overall:

  • Using pendant lights can reduce the amount of lights you need as they spread the light out
  • Stay on top of turning off lights when you’re not in the room
  • Using more LED bulbs around the home

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Learn more about Energy Efficient products


Why has the energy label changed?

With 'A' being associated with a good rating by consumers, the addition of A+, A++ and A+++ ratings made the old system less transparent as products moved up the scale due to improvement in product efficiency. The revised A-G system has reset the scale, making it easier to understand, as well as incentivising manufacturers to product even more efficient products.

What has changed on the new label?

The scale is now between A-G, with no extensions to A+ classes anymore. The label will also feature the Union flag as opposed to the EU version post-Brexit. Some new icons have been added, and older ones adapted, to provide a more transparent insight into the products.

Which product categories are changing?

Lighting, Fridges/Freezers, Washing Machines, Washer-Dryers, Dishwashers and Wine Storage are now on the new rating system. Changes to further product categories will occur in 2026, this will include Tumble Dryers, Range Cookers and Hoods.

What do we mean by energy efficient?

If an appliance is deemed energy efficient, it operates effectively using less energy. An energy-efficient appliance saves you money and helps you live sustainably. The formula to calculate energy efficiency considers how much power an appliance uses and produces. This means we look for the product that uses the least energy to provide the right amount of power.

How do energy ratings affect your appliances?

As your appliances are fit for different purposes, their energy efficiency is assessed differently.