How to Save Energy - Lighting


Lighting accounts for 40% of domestic electricity consumption and between 25% to 50% in the commercial sector. Here we’ll outline different types of lighting and how you can save energy using new technology. But first of all let's get an understanding of some words used when talking about lighting - lumens, lux and watts.



Lumen (lm) is the amount of light a bulb puts out, the higher the lumens, the greater the light output, the brighter the light. Manufacturers are required to use lumens as an indication of how bright a bulb will be.


Lux (lx) is the amount of light output on a given surface, for instance lux levels will be measured at worktop or floor level. The recommended lux levels are:


  • At home 200-300lx

  • The office 400-500lx

  • Warehouse and shops 300-1000lx


Watt (w) is the amount of energy the bulb uses. This is where LED’s trump all the others. An LED luminaire creates around 100lm per watt, a fluorescent lamp about 60lm per watt and an halogen lamp 20lm per watt.



LED’s are most efficient not just because of the energy efficiency but also because of the lifespan. An LED luminaire should last between 30,000 to 50,000 hours whereas fluorescent lamps last 5,000 to 20,000 hours.


Now, if you pair the efficiency of LED lighting with smart technology…….

Lighting control, which is a part of building automation or smart homes, allows up to 30% savings. Smart technology automatically switches on and off lights when necessary, adapting according to occupancy, preference and brightness. Features such as Automatic lighting, Automatic lights off and Automatic brightness can dramatically save you or your business money. There's also added convenience of being able to control the lighting with your smart phone or smart speaker using Alexa or Google Assistant.


Automatic lighting - As soon as it gets dark, an automatic feature will ensure that the lights turn on when you walk into a room.


Automatic lights off - Your lights automatically turn off when you aren’t in the room, making your home more energy efficient.


Automatic brightness - You can select the optimum lux levels for a room, if there is enough natural light in the room, the lights won’t automatically come on. If there is not enough natural light, then when you walk into the room – the perfect lighting mood for that time of day will automatically turn on.


Loxone offer the above building automation features.


If your interested in exploring how you can save energy and money at home or in business please get in touch call 07422966120 or message on Facebook


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