When building this project we looked at data from previous years and noticed that in Summer and Winter the peak electricity times were different. Strange, but perhaps schools work differently in summer and winter. A closer look showed the peaks to be an hour apart and the change happened in March/April and September/October.
A quick phone call revealed that the Automatic Meter Readers just operate on Greenwich Mean Time, but schools don’t.
Therefore our system adjusts all the readings during British Summer Times by an hour to reflect the time that your school will be working on.