Aon

Aon, a UK-headquartered company in Other business services (74), reported its 2025 Scope 1 emissions as 20,189,000 kg CO2e and its Scope 2 market-based emissions as 23,285,000 kg CO2e. For 2024, the company's Scope 1 emissions were 15,234,000 kg CO2e, and its Scope 2 market-based emissions were 31,786,000 kg CO2e. In 2023, Scope 1 emissions stood at 16,790,000 kg CO2e, with Scope 2 market-based emissions at 32,188,000 kg CO2e.

Looking back to 2022, Aon reported total emissions of approximately 396.2 million kg CO2e. This included Scope 1 emissions of 12,504,000 kg CO2e, Scope 2 emissions of 37,370,000 kg CO2e, and Scope 3 emissions of 346,325,000 kg CO2e. In 2021, total emissions were around 472.6 million kg CO2e, comprising Scope 1 at 6,177,000 kg CO2e, Scope 2 at 24,214,000 kg CO2e, and Scope 3 at 442,215,000 kg CO2e. The 2019 total emissions were approximately 538.8 million kg CO2e, with Scope 1 at 14,060,000 kg CO2e, Scope 2 at 22,298,000 kg CO2e, and Scope 3 at 502,398,000 kg CO2e.

Aon plc is committed to achieving net-zero greenhouse gas emissions by 2030. Furthermore, Aon plc has a Science-Based Target initiative (SBTi) commitment to reduce absolute Scope 1 and 2 GHG emissions by 55% by 2032 from a 2019 base year. The company also aims for 81% of its suppliers, by emissions covering purchased goods and services, capital goods, and upstream leased assets, to have science-based targets by 2027. This near-term target classification is consistent with reductions required to keep warming to 1.5°C.