Table 6.5

Energy Consumption in Chilean Copper Mining by Process

Unit: TJ · Cochilco, Anuario Cochilco 2025 · 2005 to 2025

Energy Consumption in Chilean Copper Mining by Process. TJ
Series	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025
Open-pit mining
Fuels	24,821	26,807	34,699	39,656	45,857	42,375	48,777	52,055	56,298	59,975	61,244	61,902	64,187	67,493	68,125	67,674	71,108	74,529	77,294	81,256	88,436
Electricity	3,784	3,688	4,202	4,609	4,959	4,274	4,131	4,605	4,518	4,936	4,290	4,294	4,195	4,799	4,397	4,613	4,646	4,525	4,522	4,586	4,303
Subtotal	28,605	30,495	38,901	44,265	50,816	46,649	52,908	56,660	60,816	64,911	65,534	66,196	68,382	72,292	72,522	72,287	75,754	79,054	81,816	85,842	92,739
Underground mining
Fuels	1,121	1,357	1,381	837	1,131	703	982	663	729	1,161	1,254	1,472	1,434	1,295	1,356	1,488	1,905	2,024	2,014	2,214	2,407
Electricity	1,310	1,470	1,293	1,353	1,457	1,295	1,529	1,729	1,725	1,814	1,627	1,470	1,493	1,474	2,057	2,500	2,735	2,855	2,785	3,035	2,846
Subtotal	2,431	2,827	2,674	2,190	2,588	1,998	2,511	2,392	2,454	2,975	2,881	2,942	2,927	2,769	3,413	3,988	4,640	4,879	4,799	5,249	5,253
Concentrator plant
Fuels	818	691	710	793	793	698	734	658	797	760	781	929	952	1,244	1,152	1,203	1,269	1,621	1,741	1,684	1,310
Electricity	27,450	27,660	29,608	27,899	30,113	30,268	33,946	38,666	41,436	43,685	44,535	47,601	47,165	52,333	49,440	51,009	52,326	51,188	52,006	57,449	58,187
Subtotal	28,268	28,351	30,318	28,692	30,906	30,966	34,680	39,324	42,233	44,445	45,316	48,530	48,117	53,577	50,592	52,212	53,595	52,809	53,747	59,133	59,497
Smelter
Fuels	7,736	7,558	7,519	7,079	7,122	7,299	6,540	7,369	6,546	7,411	7,263	7,337	7,392	6,577	5,735	6,418	6,413	6,571	6,012	5,593	4,936
Electricity	5,877	5,915	5,886	5,425	5,377	5,835	5,348	6,391	6,493	6,544	6,037	6,389	6,540	5,986	5,454	6,519	6,680	6,345	5,756	5,215	4,512
Subtotal	13,613	13,473	13,405	12,504	12,499	13,134	11,888	13,760	13,039	13,955	13,300	13,726	13,932	12,563	11,189	12,937	13,093	12,916	11,768	10,808	9,448
Refinery
Fuels	1,887	1,537	1,482	1,180	1,176	917	1,045	1,762	1,385	2,038	1,906	1,500	1,599	1,858	1,685	1,729	1,838	1,530	1,586	1,296	1,137
Electricity	1,368	1,182	1,203	1,269	1,344	1,383	1,336	1,187	1,127	1,160	1,189	1,241	1,133	1,201	927	1,194	1,145	1,046	1,001	866	746
Subtotal	3,255	2,719	2,685	2,449	2,520	2,300	2,381	2,949	2,512	3,198	3,095	2,741	2,732	3,059	2,612	2,923	2,983	2,576	2,587	2,162	1,883
Leaching (SX-EW)
Fuels	4,604	4,896	5,670	6,079	6,345	6,652	6,024	5,579	4,199	4,473	4,595	3,764	4,092	3,647	3,339	4,137	4,522	4,601	4,848	3,730	3,958
Electricity	15,977	17,136	19,200	21,123	21,752	22,209	22,409	21,452	21,834	20,752	21,039	20,436	19,789	19,745	18,996	18,906	18,575	19,121	17,546	17,222	16,783
Subtotal	20,581	22,032	24,870	27,202	28,097	28,861	28,433	27,031	26,033	25,225	25,634	24,200	23,881	23,392	22,335	23,043	23,097	23,722	22,394	20,952	20,741
Services
Fuels	1,481	1,501	1,479	1,368	1,978	1,993	1,631	6,390	3,976	3,557	3,267	2,566	3,833	3,786	4,360	3,364	4,172	3,448	3,276	4,067	3,463
Electricity	3,065	2,694	2,463	2,974	3,317	3,683	3,174	3,615	3,958	4,371	4,244	3,066	4,564	3,486	4,079	2,879	3,774	4,076	4,612	4,567	5,175
Subtotal	4,546	4,195	3,942	4,342	5,295	5,676	4,805	10,005	7,934	7,928	7,511	5,632	8,397	7,272	8,439	6,243	7,946	7,524	7,888	8,634	8,638
Seawater use (1)
Electricity	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	2,198	3,618	4,647	5,454	5,289	8,471	8,274	9,544	10,339	12,250	12,420
Subtotal	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	n.a.	2,198	3,618	4,647	5,454	5,289	8,471	8,274	9,544	10,339	12,250	12,420
TOTAL ENERGY CONSUMPTION
Fuels	42,468	44,347	52,940	56,992	64,402	60,637	65,733	74,476	73,930	79,375	80,310	79,470	83,489	85,900	85,752	86,013	91,227	94,324	96,771	99,840	105,647
Electricity	58,831	59,745	63,855	64,652	68,319	68,947	71,873	77,645	81,091	83,262	85,159	88,115	89,526	94,478	90,639	96,091	98,155	98,700	98,567	105,190	104,972
Total	101,299	104,092	116,795	121,644	132,721	129,584	137,606	152,121	155,021	162,637	165,469	167,585	173,015	180,378	176,391	182,104	189,382	193,024	195,338	205,030	210,619

Notes of the table

(1) Hasta 2014, el consumo eléctrico asociado al uso de agua de mar se encontraba incluido en el ítem "Servicios". A partir de 2015, este consumo se desagrega y se reporta de manera independiente. / Until 2014, electricity consumption associated with the use of seawater was included under the "Services" category. From 2015 onwards, this consumption is disaggregated and reported separately.

Source stated in the table

Comisión Chilena del Cobre (COCHILCO), en base a información reportada por las empresas mediante encuesta anual / Chilean Copper Commission (COCHILCO), based on information reported by companies through an annual survey

Source: Chilean Copper Commission (Cochilco), Cochilco, Anuario Cochilco 2025 (XLSX), 2026. Read on Oct 6, 2026.

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n.d.: no data · n.a.: not applicable · “< 1”: less than one unit.