Energy Performance Indicator — a normalized metric (e.g. kWh per tonne of product) tracked against a baseline so improvement is provable to auditors and management.
From our guide: ISO 50001 Energy Management — full context, charts and sources there.
Boilers, kilns, heat exchangers, valves and steam lines lose energy continuously. Inzonex makes patented (UK GB2508992.1) removable modular insulation — snap-fastened covers engineered per temperature tier, not generic off-the-shelf jackets: