Aon PLC
Aon's GHG Emissions Data Preview
In 2024, Aon completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
However, Aon has not published a category-level breakdown of its Scope 3 emissions, limiting visibility into specific value chain sources.
| Metric (tCO2e) | 2024 | 2023 | 2022 | 2021 - 2017 |
|---|---|---|---|---|
Total Scope 1 | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  b | 0000000 |
Total Scope 2 | ||||
Unspecified Calculation Method | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  b | 0000000 |
Total Scope 3 | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  b | 0000000 |
Total Scope 1 Revenue Intensity (tCO2e/$M) | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  a | Copy restricted. Please purchase to unlock this data.  b | 0000000 |
Download Aon's GHG Emissions data for free
Create your Tracenable account today and download up to 5 company datasets of your choice for free. No credit card required.
This table provides a simplified preview of selected GHG emissions data points. To access the complete dataset with full disclosures, detailed breakdowns, and source traceability, create a free account to view purchase options.
Verified Sources Behind Aon’s Greenhouse Gas (GHG) Emissions Data
Every figure on this dashboard has a transparent audit trail. With Tracenable, each data point is traceable back to its original source, viewable directly inside our platform. Explore Aon’s data sources below and access millions more through our Disclosure Search .
Trace every data point back to Aon’s disclosures
Sign up for Tracenable and access millions of corporate disclosures, including annual reports and sustainability filings from global companies, completely free of charge.
Trace every data point back to Aon’s disclosures
Sign up for Tracenable and access millions of corporate disclosures, including annual reports and sustainability filings from global companies, completely free of charge.
Insights into Aon's Operational Emissions
In 2024, the total operational greenhouse gas (GHG) emissions of Aon amounted to 47,022 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2). a
Compared to 2023, the total operational greenhouse gas (GHG) emissions of Aon decreased by 3.99%, showing that the company has made progress in taking action to reduce the climate impact of its operations. a
Aon's Scope 1 Emissions Over Time
- Total Scope 1
- Year-over-Year Change
What are Aon's Scope 1 emissions?
In 2024, the total Scope 1 emissions of Aon were 15,235 metric tons of COâ‚‚ equivalent (tCOâ‚‚e). a
Has Aon reduced its Scope 1 emissions over time?
Since 2019, Aon's Scope 1 emissions have increased by 8.36%, reflecting a rising long-term trend in Scope 1 emissions over time. a b
Compared to the previous year (2023), Aon's Scope 1 emissions decreased by 9.26%, highlighting the company's efforts to lower direct emissions from assets it owns or controls. a
What are Aon's Scope 2 emissions?
In 2024, Aon reported Scope 2 greenhouse gas (GHG) emissions of 31,787 tCOâ‚‚e without specifying the calculation method. a
Has Aon reduced its Scope 2 emissions over time?
Since 2019, Aon's Scope 2 greenhouse gas (GHG) emissions (Unspecified Calculation Method) have increased by 42.56%, reflecting a rising long-term trend in Scope 2 emissions over time. a b
Compared to the previous year (2023), Aon's Scope 2 emissions (Unspecified Calculation Method) have remained relatively stable, indicating that Aon 's emissions have plateaued with no significant change in its energy consumption footprint. a
What methodology does Aon use for Scope 2 reporting?
In 2024, Aon reported its Scope 2 emissions using an unspecified methodology. a
Aon's Scope 2 Emissions Over Time
- Total Scope 2 (Unspecified Calculation Method)
Insights into Aon's Value Chain Emissions
In 2024, Aon reported 416,183 metric tons of COâ‚‚ equivalent (tCOâ‚‚e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain. a
The 2024 disclosure of Aon includes a breakdown across 0 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2023, demonstrating consistent Scope 3 emissions reporting coverage year over year. a
Aon's Scope 3 Emissions Over Time
- Total Scope 3
- Year-over-Year Change
What are Aon's Scope 3 emissions?
In 2024, Aon reported total Scope 3 emissions of 416,183 metric tons of COâ‚‚ equivalent (tCOâ‚‚e). a
Has Aon reduced its Scope 3 emissions over time?
Since 2019, Aon's Scope 3 emissions have decreased by 17.16%, reflecting a declining long-term trend in Scope 3 emissions over time. a b
Compared to the previous year (2023), Aon's Scope 3 emissions remained relatively stable, indicating that Aon 's emissions have plateaued with no significant change in its value chain footprint. a
Insights into Aon's Total Carbon Footprint
In 2024, Aon reported a total carbon footprint of 463,205 metric tons of COâ‚‚ equivalent (tCOâ‚‚e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 7.18% decrease compared to 2023, indicating progress in reducing its overall greenhouse gas output. a
The largest contributor to Aon's total carbon footprint was Scope 3 emissions, accounting for 89.85% of the company's total carbon footprint, followed by Scope 2 emissions at 6.86%. a