Copper: Emissions
How recycling cuts copper's carbon footprint
How recycling cuts copper's carbon footprint What this tab covers The greenhouse-gas footprint of the commodity at a global level, split by lifecycle phase: extraction (or farming), refining and processing, movement, usage, and recycling or end of life. Intensities are per unit of product; the global total combines intensity with world output. Also covers other environmental impacts and the main levers to cut emissions. Emission intensity 3.60 t CO2e per t range 1.2-6 · cradle-to-gate, global average of ICA member data; Aurubis cathode with 44% recycled input was 1.25 t in 2025 Global emissions per year 100 Mt CO2e per year 2024 · copper production is about 0.2% of global GHG emissions (ICA, 2018 data); cross-check 23-29 Mt x 3.6 tPer t of refined copper (cathode), cradle-to-gate. Intensity: ICA 2023 global average (3.638 kg CO2e/kg), as cited in Aurubis LCA cathode factsheet, Oct 2026. Global total: ICA GHG Measurement guidance 2022; derived.
Share of footprint by lifecycle phase
Extraction 55% Refining / processing 38% Movement 6%Footprint by lifecycle phase
| Phase | Intensity | Share | Main sources of emissions | Notes | Source |
|---|---|---|---|---|---|
| Extraction | about 2.0 t CO2e/t (mining and concentration) | 55% | diesel haul trucks, electricity for crushing and grinding | Dominates the footprint and rises as ore grades fall | Aurubis 2026 (concentrate dominates); share indicative |
| Refining / processing | about 1.4 t CO2e/t (smelting, refining, SX-EW) | 38% | smelter fuel and power, electrorefining; SX-EW electrowinning power | Grid mix matters most: Chinese and Indian coal power raises intensity | Aurubis 2026; share indicative |
| Movement | about 0.2 t CO2e/t | 6% | trucking and bulk shipping of concentrate (about 3-4 t of concentrate per t of copper) | Concentrate from Chile to China travels about 19,000 km | Indicative |
| Usage | none directly; enabling | – | no emissions in use | Copper cuts losses in motors, transformers and grids, and is essential for EVs, wind and solar | this tile's lessons |
| Recycling / end of life | secondary copper roughly 0.5-1.5 t CO2e/t, about 60-80% lower than primary (indicative) | – | scrap collection, remelting and refining | Recycled copper met 32-33% of demand in 2023; EU end-of-life recycling input rate 55% | ICSG via BRGM 2024; EU CRM 2023; Aurubis 2026 (indicative) |
Other environmental impacts
Large tailings dams and water use in arid Chile and Peru; sulphur dioxide from smelters, captured as sulphuric acid at modern plants; acid mine drainage. The Tuticorin smelter in Tamil Nadu was shut in 2018 after protests over pollution.
Levers to cut emissions
- Renewable power purchase deals for concentrators and refineries in Chile
- Trolley-assist and battery haul trucks to replace diesel
- More recycling: secondary copper has a fraction of the primary footprint
- Efficient flash smelting with sulphuric acid recovery and waste heat use
- Ore sorting and coarse particle flotation to cut grinding energy
India
India refines about 620 kt of copper from imported concentrate (USGS 2025e), so its mine emissions fall abroad, but smelting at Dahej and Mundra uses a grid of about 0.7 t CO2 per MWh (CEA CO2 Baseline Database, indicative).
Emission figures are indicative global averages from the life-cycle studies named; actual footprints vary widely by site, energy mix and method.