Lime out-emits cement per tonne: CaCO3 → CaO releases ~0.79 t CO2/t lime from chemistry alone before any fuel burns. With ~68% process share, lime is on every CCS shortlist — and on CBAM's cement-category list.
| Year | Free allocation (EU) | Payable carbon cost | Annual bill (per 100,000 t lime) |
|---|---|---|---|
| 2026 | 97.5% | €2.40 / t lime | €240,030 |
| 2030 | 51.5% | €46.57 / t lime | €4,656,582 |
| 2034 | 0.0% | €96.01 / t lime | €9,601,200 |
At EUA €80.01 (July 13, 2026) and ≈1.2 t CO2/t lime (EuLA; ~68% process). EU ETS industry schedule; exporters under CBAM follow the mirrored phase-in. Power sectors pay 100% from day one.
Indicative reduction potential of each measure against the relevant emissions share (sources: IEA industry roadmaps, sector associations — see each measure page). Measures stack but don't simply add.
Fuel is only a third of the problem but it's the third you can cut this year: shaft-kiln services, hydration plant steam, hot conveying all carry standing losses. Lime plants are typically lean operations — removable insulation's no-downtime install matches how they maintain.
Method: ASTM C680 / ISO 12241 surface energy balance — the same engine as our public calculators. Typical removable-insulation effect across hot-process plants: 2–5% of fuel-related CO2, payback up to 2 years.
Direct-emission intensities, typical published values per industry page — units differ by product; see each page for sources.
