Nottinghamshire's Energy Experiment takes place for a second time on Wednesday, 24 February, 2010.
The aim is to see how much energy can be saved in one night.
It is the idea of BBC Radio Nottingham breakfast presenter Andy Whittaker. He said: "It's about switching off things you're not actually using."
In the first experiment in February 2009 a total of 14,150 kilowatt hours of electricity were saved, the equivalent to 425,000 boiling kettles.
This year Andy Whittaker hopes the Energy Experiment will save even more power.
The radio presenter said: "I think you will be surprised if you go around your own house at night and see what you've left on that you actually shouldn't."
To take part, simply avoid using anything electrical between 9.00pm on Wednesday, 24 February and 6.00am the following morning, switching off appliances at the plug and turning off lights.
"It's not about sitting in the dark though, just try not to use anything electrical that you don't actually need for as much of the time period as you can," Andy Whittaker added.
Central Networks will monitor what difference is made in power consumption during the experiment and will reveal the statistics on Andy Whittaker's show at breakfast time on BBC Radio Nottingham at the beginning of March.
It is hoped that businesses, homes, schools, universities and councils will take part again.
Please fill in this form to tell us you are taking part.
