Yes — if your real embedded emissions are below the default values (they usually are for modern plants), reporting them cuts the certificate count directly.
From our guide: Carbon Pricing & CBAM — 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: