Watford Grammar School - Hero Section

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.

Watford Grammar School Building
£5,641 Annual Savings
School Crest

CLIENT Watford Grammar School

SECTOR Education
LOCATION Hertfordshire
Watford Grammar School - Stats Banner
60% Of energy used outside school hours
£5,641 Saved annually on energy bills
24/7 Real-time energy monitoring
The Challenge — Watford Grammar School

Rising energy bills with no clear explanation

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.

Students walking outside Watford Grammar School
Our Approach — Watford Grammar School
Watford Grammar School Building

Data-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.

The data showed that 60% of energy was being consumed at night and early morning, even when no one was in the building during holidays.

The Results — Watford Grammar School

Clear data led to immediate, measurable savings

£5,641
Annual savings on energy bills by adjusting heating settings and timers to eliminate out-of-hours waste.
60%
Of previously unaccounted energy usage identified and addressed through data-driven scheduling changes.
Immediate
Actionable insights from day one. No complex installation or lengthy setup period required.
Ongoing
Continuous monitoring ensures the school stays efficient and catches any new patterns of waste early.
"

They 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.

Mr Thorold
Watford Grammar School for Boys
Get Started — Purely Energy

See where your energy is really going

Understanding your energy usage is the first step to cutting costs. With Purely INSIGHTS, you get clear data and actionable reports — no guesswork required.