Schools across the county will turn off the lights for the Switch-off Challenge on Friday, November 21.
In addition to the lights, computers, interactive white boards and all non-essential electrics will be turned off for the whole day in a bid to get schools thinking about ways to save energy.
Each participating school will take two meter readings during the challenge to compare readings taken on a normal day.
The county council’s Schools Collaboration on Resource Efficiency (SCoRE) team, which is running the challenge, will collate the results.
Prizes will be given to the three schools that make the biggest reductions.
SCoRE project officer Emily Neville said: “The switch-off challenge is a great way to get teachers and pupils thinking about their energy use and what simple changes they can make to reduce their consumption.
“Utility bills form a significant part of a school’s controllable budget, so using energy more wisely could save money as well as reducing the building’s carbon emissions.
“Previous switch-off days have seen schools reduce their energy use by up to 58 percent compared to a normal day and we’re hoping everyone will be able to reduce it by about 50 percent this November.
It’s not too late for schools get signed up for the challenge.
All you have to do is simply register your school and contact details by emailing email@example.com to receive a free resource pack.