CO2 gets the price tag, but a wasted GJ of fuel also carries NOx, SOx, particulates and water impact. Efficiency is the only measure that cuts the whole basket at once.
| Impact | Per GJ | Note |
|---|---|---|
| CO2 | ≈56 kg | IPCC factor |
| NOx | ≈0.05–0.1 kg | burner-dependent |
| Water (cooling, CCGT context) | varies by site | |
| Waste heat to environment | 1 GJ | thermal discharge |
Coal multiplies every line: ~95 kg CO2/GJ plus ash, SOx, mercury traces. The cleanest unit of energy remains the one not burned.
EU industrial sites report multi-pollutant data under E-PRTR; large combustion plants meet BAT-AEL limits under the IED. The practical link to this hub: every efficiency measure on the measures list reduces fuel burn — and with it the entire pollutant basket, not just the priced CO2. That's why environmental permits increasingly reference energy-efficiency plans.
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:
Heat rejected to rivers and air is itself regulated (cooling-water temperature limits). Plants that recover heat (see ORC, heat pumps) reduce both fuel intake and thermal discharge — a double permit win.