Over the last year 63% of your electricity was used when the school was closed. What are those teachers getting up to out of hours?? This has cost the school £19,000. Time to take action!
There is a large variation in your school's seasonal overnight electricity usage from 14 kW in the winter to 9.1 kW in the summer. This suggests electric heating is left running overnight during the winter or the school has inefficient security or flood lights. Talk to the site manager to change electric heater settings and improve lighting efficiency to save £2,700 annually.