No federal price. California's cap-and-trade ($29.27 at the Feb 2025 auction) and RGGI (north-eastern power sector) are the main systems; most US industry pays nothing domestically.
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: