In 2025, JSE disclosed key data related to its energy management practices, providing transparency into its operational energy use in line with recognized sustainability reporting frameworks.
JSE also reported the energy it generates itself, offering insight into its level of energy independence.
Additionally, JSE also disclosed progress toward renewable energy adoption, highlighting the share of total energy sourced from renewable versus non-renewable sources.
| Metric (GJ) | 2025 | 2024 | 2023 | 2022 - 2017 |
|---|---|---|---|---|
Total Energy Consumption | 23,654a | 24,359b | 23,153c | |
Non-Renewable Energy Consumption | 23,654a | 24,359b | 23,153c | |
Renewable Energy Consumption | 0a | 0b | 0c | |
Total Energy Production | 215a | 730b | 4,512c | |
Non-Renewable Energy Production | 215a | 730b | 4,512c | |
Renewable Energy Production | 0a | 0b | 0c |
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In 2025, JSE consumed a total of 23,654.19 Gigajoules of energy across its operations. Of this total, 0% was sourced from renewable energy, either derived from natural resources like biofuels, biomass, or biogas, or generated using renewable technologies such as solar or wind power. The remaining 100% was classified as non-renewable energy, coming from fossil-based fuels such as coal, natural gas, or crude oil, or from non-renewable generation technologies like nuclear power.a
In 2025, JSE consumed a total of 23,654.19 Gigajoules of energy, of which 0% was derived from renewable sources, including biofuels, biomass, biogas, solar, and wind power.a
This low level of renewable energy use highlights a heavy reliance on fossil fuels or other non-renewable sources, suggesting that JSE has considerable room to improve its energy sustainability strategy.
Since 2023, JSE's total energy consumption increased by 2.16%, but declined by 2.89% in 2025, suggesting a recent moderation in energy use.abc