Description

This school uses 180 kWh/m²/year vs. the DfE benchmark of 135 kWh/m²/year for similar-sized secondary schools.

Diagnosis

Primary contributors: aging boiler plant (85% efficiency vs. 95% modern equivalent), single-glazed windows in east wing, and uninsulated flat roof sections.

Recommended Action

Prioritise boiler replacement (ROI: 4 years). Apply for Salix funding for window upgrades. Roof insulation can be combined with upcoming waterproofing works.