Operational Energy & Performance Gap Analysis
Bridging predicted and actual energy performance with calibrated simulation and metered data.
Performance Gap Analysis — CIBSE TM54
Design prediction → metered reality → gap identification → root cause → calibrated model → targeted interventions.
Overview
We bridge the gap between predicted and actual building energy performance — using calibrated simulation, metered data analysis, and the CIBSE TM54 methodology to provide realistic operational energy forecasts and identify where performance is being lost.
Why It Matters
The performance gap — the difference between what a building was designed to consume and what it actually uses — is one of the industry’s most persistent problems. Buildings routinely consume 50–100% more energy than predicted at design stage. This undermines net zero targets, inflates operational costs, and erodes confidence in sustainability commitments. Addressing this requires a fundamentally different approach to energy prediction.
Our Approach
We use the CIBSE TM54 methodology to build operational energy models that account for unregulated loads, extended operating hours, process energy, and realistic occupancy patterns — factors that compliance models typically exclude. Where buildings are already operational, we use metered data to calibrate models, identify inefficiencies, and quantify the impact of specific interventions. Our outputs are designed for building operators and asset managers, not just designers.