Lighting See all Guides

Energy efficient lighting advice for your organisation, including guidance on energy-saving LED lighting and T5 fluorescent lighting.

We help organisations ensure their lighting systems are as efficient as possible. Our Lighting technology overview guide introduces the main energy-saving opportunities in this area.

Getting lighting right is important for the energy efficiency of a building and the well-being of its occupants. Up to 40% of a building's electricity use is accounted for by lighting, while the right level and quality of light improves the alertness and accuracy of those working in it.

Ways to improve your organisation's lighting include:

  • Occupancy sensors: By dimming or switching off lighting when there is nobody in a room occupancy sensors can reduce electricity use by 30%.
  • Daylight sensors: Adjusting the artificial lighting according to the amount of natural light in a room using daylight sensors or photocells can reduce electricity use by up to 40%.
  • Maintenance plan: By regularly cleaning windows and skylights you can reduce the need for artificial light. Cleaning the fixtures that contain lamps, known as luminaires, will improve their performance.


Lighting overview guide

Lighting technology overview guide

Lighting is something that most of us take for granted. How often do we question the
amount or quality of that light? Or how much it costs to run and maintain? Our 45-page guide sets out to explain the basics of artificial lighting; the equipment, design principles and the effect it has on our work and leisure.

It is intended to inform a wide range of readers about the importance of light; both natural and artificial. In particular, it will help you to understand how to choose artificial lighting equipment that will deliver the most energy efficient solutions without compromising on quality.

A better understanding of good lighting practices helps when considering its direct and indirect costs. A bad lighting scheme is a complete waste of energy and is not sustainable. This guide will explain why and help you to improve the lighting where you work, saving money and carbon.

Guide contents:

  • Introduction
  • Importance of light
  • Understanding light
  • Light & colour
  • Daylight
  • Health and well-being
  • Lamps
  • Control gear
  • Luminaires
  • Lighting controls:
    • overview
    • techniques
    • applications
  • Lighting design
  • Applications
  • Next steps
  • Glossary


Publication date December 2011; Publication code CTV049

Information in this report was correct at the time of publication

Lighting overview guide (CTV049) - digital download

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Support for energy-saving lighting upgrades

Looking to upgrade to energy-saving lighting or make other energy efficiency improvements?  See our services to find out how we can help.  This includes financing and implementation support for organisations seeking to invest in energy efficient equipment.

Energy efficient lighting: further guidance

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