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KAZ Minerals is constantly seeking to improve the energy efficiency of its facilities.
The Group conducts detailed environmental due diligence prior to the development of new mining projects and continually monitors the impact of its activities on the environment, publishing key performance indicators on an annual basis.
The Health, Safety and Sustainability (‘HSS’) Committee is responsible for oversight of the Group’s environmental policies, reporting, standards and compliance. Senior management is responsible for the Group’s overall environmental performance.
| 2024 | 0.19 |
| 2023 | 0.19 |
| 2022 | 0.19 |
| 2021 | 0.19 |
| 2020 | 0.20 |
| 2019 | 0.20 |
| 2018 | 0.22 |
| 2017 | 0.24 |
| 2016 | 0.46 |
| 2015 | 0.86 |
In 2024, KAZ Minerals maintained the energy efficiency of its operations at the historically low level of 0.19 TJ of energy used per kt of sulphide ore processed. Since the Group’s first full year of operations following the Restructuring in 2014, management has focused on long-term operational improvements to enable KAZ Minerals to produce copper as efficiently as possible. The Group’s operating portfolio is now dominated by the large scale, open pit mines at Aktogay and Bozshakol which benefit from significant economies of scale, with modern grinding and flotation technology employed at the concentrators, which drives further efficiency.
During 2024, the Group’s four concentrators across the Aktogay and Bozshakol sites all operated above design capacity, which enabled the Group to maintain its historically low level of energy use per tonne of sulphide ore processed in line with 2023. Additionally, the Aktogay and Bozshakol mines benefit from a low strip ratio, with limited volumes of rock required to be removed per tonne of ore extracted, which also drives efficiency in the mining process.
| Energy intensity1 | 0.19 | 0.19 |
| 2024 | 2023 | |
|---|---|---|
| Electricity | 13.06 | 12.54 |
| Diesel | 3.61 | 3.28 |
| Heat | 1.14 | 1.12 |
| Other | 0.13 | 0.14 |
| Total | 17.94 | 17.08 |
1TJ/kt sulphide ore processed
| Total | 17.94 | 17.08 |
| Energy intensity1 | 0.19 | 0.19 |
| 2024 | 2023 | |
|---|---|---|
| Aktogay | 9.03 | 8.46 |
| Bozshakol | 5.54 | 5.30 |
| East Region | 3.03 | 2.97 |
| Bozymchak | 0.34 | 0.35 |
1 TJ/kt sulphide ore processed.
During 2024, KAZ Minerals used 17.94 PJ of energy from all sources, a 5% increase compared with the previous year (2023: 17.08 PJ). The overall increase in energy consumption was primarily a result of a 4% rise in electricity used, aligned with the 6% increase in ore processed at the Group’s concentrators in the year. Additionally, the volume of diesel consumed rose by 10% in 2024 compared with 2023 following an increase in mining activities at Aktogay and Bozshakol. As the Group’s open pit mines at Aktogay and Bozshakol deepen and widen over the coming years, the Group expects diesel consumption to increase. Through continuous improvement initiatives, the Group seeks to minimise fuel consumption.
The energy intensity of the Group’s activities remained at 0.19 TJ per kt of sulphide ore processed as the increase in energy usage was offset by higher throughput at the Group’s concentrators in 2024.
| Total | 13.06 | 12.54 |
| Electricity intensity1 | 0.14 | 0.14 |
| 2024 | 2023 | |
|---|---|---|
| Aktogay | 7.32 | 7.02 |
| Bozshakol | 3.99 | 3.85 |
| East Region | 1.54 | 1.49 |
| Bozymchak | 0.21 | 0.18 |
1 TJ/kt sulphide ore processed.
Electricity consumption across the Group rose by 4% to 13.06 PJ in 2024 (2023: 12.54 PJ), primarily driven by the 6% increase in ore processed. Both Aktogay and Bozshakol used 4% more electricity in the year as the sites processed 7% and 6% more ore respectively. Power consumption at Bozymchak rose during 2024 as the site operated its underground mine for the full year, which tends to require more electricity than open pit mining.
| Total | 3.61 | 3.28 |
| Diesel intensity1 | 0.029 | 0.029 |
| 2024 | 2023 | |
|---|---|---|
| Aktogay | 1.71 | 1.43 |
| Bozshakol | 1.55 | 1.45 |
| East Region | 0.25 | 0.26 |
| Bozymchak | 0.10 | 0.14 |
1 TJ/kt ore mined.
In 2024 the Group consumed 3.61 PJ of diesel, a 10% increase compared with the previous year (2023: 3.28 PJ). Diesel consumption at Aktogay rose by 20% following the 26% increase in rock moved at the site, while at Bozshakol rock moved increased by 20% which resulted in a 7% increase in diesel usage. Overall diesel intensity, measured as TJ of diesel per kt of ore mined, remained consistent with 2023.