We installed Purely Insights at Watford Grammar School for Boys to find out why energy bills stayed high with no clear explanation. Real-time monitoring uncovered a clear pattern of out-of-hours waste, and the school acted on it immediately.

How Watford Grammar School saved £5,641 by uncovering hidden energy waste
Energy monitoring revealed that 60% of the school's energy was being consumed when the building was empty. With clear data, they took action and cut costs immediately.
- By Purely Energy Editorial Team
- Watford Grammar School
- Hertfordshire
- 2 min read

Client feedbackThey are helping me provide ways of reducing our energy costs and Zoe was excellent in arranging the installation of two AMR devices, which will definitely help us in our goal to reduce our energy usage. The service they offer really does go above and beyond the norm.
Overview

The challenge
Watford Grammar School for Boys is an academy in Hertfordshire serving 11 to 18-year-olds. The school's facilities team was concerned about consistently high energy bills but had no way to pinpoint exactly where the money was going. Without granular data, it was impossible to understand whether the problem was inefficient equipment, poor scheduling, or something else entirely. They needed clarity before they could take action.

Our approachData-driven insight through real-time monitoring
We installed our energy monitoring software, Insights, across the school's infrastructure. The platform generates clear, actionable reports showing exactly where and when energy is being consumed, broken down by time of day, building area and system. The data revealed a striking pattern: the majority of energy consumption was happening during nights, early mornings and school holidays, times when the building should have been largely dormant.

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