Marsh & McLennan Companies, Inc.

Marsh & McLennan Companies, Inc.'s reported carbon emissions

In 2025, Marsh & McLennan Companies, Inc. reported total carbon emissions of approximately 1,000,000,000 kg CO2e. This figure includes Scope 1 emissions of about 21,108,000 kg CO2e, Scope 2 emissions of approximately 7,964,000 kg CO2e (market-based), and significant Scope 3 emissions totalling around 968,000,000 kg CO2e. The company has set ambitious climate commitments, aiming for net-zero carbon emissions across its global operations by 2050. This includes a target to reduce absolute Scope 1 and 2 greenhouse gas emissions by 50% by 2030 from a 2019 base year, and a long-term goal of a 90% reduction by 2050. Marsh & McLennan's Scope 3 emissions reduction targets are also notable, with a commitment to reduce emissions from purchased goods and services, capital goods, and business travel by 55% per million USD of operating profit by 2030, and by 97% by 2050. These targets align with the Science Based Targets initiative (SBTi) and reflect the company's commitment to addressing climate change comprehensively across all scopes of emissions.