GHG emissions inventory

IBM calculates its greenhouse gas (GHG) emissions according to The Greenhouse Gas Protocol Corporate Accounting and Reporting Standard and follows procedures aligned with the ISO 14064-1 standard. Please see our independent limited assurance verification statement.

With few exceptions, IBM does not estimate Scope 3 GHG emissions associated with our value chain because the necessary gross assumptions associated with such estimates simply do not enable credible, factual results. For more information, please see our Position on Scope 3 GHG emissions.

IBM GHG emissions inventory


1 Our reported emissions for calendar year 2021 include ten months of operation of IBM's managed infrastructure services business, which was spun off into a new company, Kyndryl, on November 3, 2021.

2 Figures have been rounded to the nearest thousand.

Description of Scope 3 GHG emissions