In 2025, Willis Towers Watson disclosed key data related to its energy management practices, providing transparency into its operational energy use in line with recognized sustainability reporting frameworks.
Willis Towers Watson 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 | 189,918a | 234,522a | N/A | |
Non-Renewable Energy Consumption | 128,851a | 161,276a | N/A | |
Renewable Energy Consumption | 61,067a | 73,246a | N/A |
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In 2025, Willis Towers Watson consumed a total of 189,918 Gigajoules of energy across its operations. Of this total, 32.15% 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 67.85% 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, Willis Towers Watson consumed a total of 189,918 Gigajoules of energy, of which 32.15% was derived from renewable sources, including biofuels, biomass, biogas, solar, and wind power.a
This moderate level of renewable energy adoption indicates that Willis Towers Watson is transitioning toward cleaner energy sources, though a significant share of its energy mix still relies on non-renewable inputs.
Since 2019, Willis Towers Watson's total energy consumption decreased by 54.62%, including a further 19.02% drop in 2025, highlighting a continued decline in energy use.a
Over the same period, the share of renewable energy in Willis Towers Watson's consumption increased by 91.43%, including a 2.95% increase in 2025, showing consistent progress in clean energy adoption.a
Overall, Willis Towers Watson has reduced its total energy consumption while steadily increasing its use of renewables, reflecting a strong commitment to reducing its energy-related environmental footprint.