replacing lighting energy efficient leaping hare electrical & renewables

Energy efficient lighting

Energy efficient lighting helps lower electricity bills and carbon dioxide emissions, all without reducing the quality of light in our homes.

If you replace all the bulbs in your home with LED lights, you could reduce your carbon dioxide emissions by up to 40kg a year. This is equivalent to the carbon dioxide emitted by driving your car around 140 miles.

Lighting makes up 15% of the average UK household electricity consumption, so making the switch could help you save money too.

Benefits of energy efficient lighting

  • lower your carbon footprint
  • reduce your lighting bills
  • make your home light and bright

This post gently explores what lighting solution is right for you but for even more information visit The Energy Saving Trust. Potential financial savings are huge a 100W incadescent bulb replaced with an LED could save you £7 a year, replacing a standard 60W would save you £3 per bulb per year figures based on a 445Hrs running a year.

How do I choose the right light bulb for my needs?

Select the right bulb

There are two main types of energy-efficient light bulbs available: compact fluorescent lamps (CFLs) and light emitting diodes (LEDs).

LEDs are the most common and adaptable light fitting, and are suitable for replacing dimmable lights and spotlights. LEDs are also more energy-efficient than CFLs.

If you replace all the bulbs in your home with LED lights, you could save on your electricity bills.

This table shows the best type of bulb to use in different environments.

General lightingLED or CFL
OutdoorLED or CFL
SpotlightingLED spots
Dimmable lightingLED or B-rated halogen
Crystal chandelierLED

Select the right lumen value

If you have ever bought a low energy light bulb and been disappointed by the level of brightness it gives out; you may have picked a bulb with too small a lumen value.

With traditional bulbs, we used watts to determine the brightness of a bulb, but watts measure power consumption rather than brightness. Energy-efficient bulbs use fewer watts, so it is best to look at lumen output.

This table compares the wattage of traditional bulbs and approximate equivalent lumen values of LEDs / CFLs.

Traditional bulbLED / CFL bulb
15 watt140 lumen
25 watt250 lumen
40 watt470 lumen
60 watt800 lumen
75 watt1,050 lumen
100 watt1,520 lumen

Select the right colour

Low energy light bulbs imitate traditional light bulbs, so if you prefer a particular colour, there should be a close match with the new energy-efficient lighting.

‘Soft white’ or ‘warm white’ bulbs provide a cosy glow that is best for general household lighting, while ‘cool white’ or ‘pure white’ are ideal for office spaces or any area that requires clear vision.

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