Before you tackle this activity you will want to have a look at how much energy is being consumed when community groups are using your school buildings.

You will need to know:

Your office manager or site manager can help with some of these answers.

Your school should have set a target to reduce its energy use over the coming year.  If not, talk to you teacher or headteacher about this.  Be sure to mention this in your communications as you can encourage the community groups to help you achieve these.

How will you get the message across?
You might want to put up posters in the parts of the school that are used.  Or why not write them a letter.
Tell them why you're trying to save energy at school and why it's so important that you need everyone to get on board.  Show them the data and the part they play.  Give some suggestions about what they could be doing to help bring usage down.  And don't forget to be polite!