Run a campaign to switch off electrical equipment overnight

Linthwaite Clough School, Tuesday, 14 January 2025
30 Change-maker KS1, KS2, KS3

What you did

We spent time looking at the way energy is used in our school and areas where it can be reduced.  We have allocated class monitors who will ensure that lights are switched off and windows closed before the class leave the room.  We intend to allocate monitors in each class who will do the same.  We played a game of heroes and villains and looked carefully at CO2 output and how we can reduced it by making personal changes.
 

Activity description

Your school should only use a small amount of electricity overnight for items such as fridges, freezers and servers. It is likely though that your school is leaving other items on overnight. An out-of-hours survey will help you identify these items so they can be switched off.  This is your baseload.

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  1. Undertake a detailed survey of all school rooms - 
    • Don’t forget the boiler room, services rooms and outside. Identify electrical items left on unnecessarily, looking particularly at exterior lighting, IT equipment, electric hot water heaters, pumps and other plant room equipment. 
    • Make a list for each room of the electrical equipment and apply a coloured sticker to the switch of each device. A traffic light coding system should be used for the stickers as follows:
      •  Green indicates equipment should be switched off when not in use (e.g. PCs, lighting). 
      • Amber indicates equipment should be switched off after ensuring no-one is using it. 
      • Red Do not touch. Equipment should not be switched off (e.g. fridges, freezers and network servers). 
  2. Note: shapes can be used with the colours to assist those that may be colour blind. 
  3. Switch off all equipment labelled with a green or amber sticker. 
  4. Measure your reduced energy use – After switching off all unnecessary electricity users, it is good to check the savings. Use the Energy Sparks charts to compare your school's energy use  across the day before and after the switch off campaign.
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  5. Repeat these checks regularly to check your overnight load does not start to rise above the ‘best practice’ level you measured above. 
  6. Make extra checks when you close up for the school holidays – leaving equipment on over the holidays will use a lot of unnecessary electricity. 

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