Energy-intensive plants usually end with both, integrated: shared documentation and combined audits cut the marginal cost substantially.
From our guide: ISO 50001 vs ISO 14001 — 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: