In 2025, Ionis Pharmaceuticals disclosed key data related to its energy management practices, providing transparency into its operational energy use in line with recognized sustainability reporting frameworks.
Ionis Pharmaceuticals also reported the energy it generates itself, offering insight into its level of energy independence.
Additionally, Ionis Pharmaceuticals 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 | 2022-2019 |
|---|---|---|---|---|
Total Energy Consumption | 49,025a | 47,531a | 51,444a | |
Non-Renewable Energy Consumption | 24,185a | 25,787a | 23,292a | |
Renewable Energy Consumption | 24,840a | 21,744a | 28,152a | |
Total Energy Production | 4,604a | 4,194a | 4,064a | |
Renewable Energy Production | 4,604a | 4,194a | 4,064a |
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In 2025, Ionis Pharmaceuticals consumed a total of 49,024.8 Gigajoules of energy across its operations. Of this total, 50.67% 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 49.33% 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, Ionis Pharmaceuticals consumed a total of 49,024.8 Gigajoules of energy, of which 50.67% was derived from renewable sources, including biofuels, biomass, biogas, solar, and wind power.a
This moderate level of renewable energy adoption indicates that Ionis Pharmaceuticals is transitioning toward cleaner energy sources, though a significant share of its energy mix still relies on non-renewable inputs.
Since 2023, Ionis Pharmaceuticals's total energy consumption decreased by 4.7%, yet rose by 3.14% in 2025, pointing to a potential reversal in recent energy-saving progress.a
Over the same period, the share of renewable energy decreased by 7.41%, yet improved by 10.76% in 2025, suggesting a rebound in renewable sourcing.a
Overall, Ionis Pharmaceuticals’s energy trends reveal a complex picture, with variations in total consumption and renewable sourcing. A closer examination of operational drivers and sourcing strategies is needed to fully assess the company’s environmental impact.