Process-emission industries — cement/lime chemistry can't be efficiency'd away. Heat-driven sectors mostly have cheaper routes.
From our guide: Carbon capture & storage (CCS) — 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: