AT&T Gigaton Goal Overview and Methodology Update

This document is a technical report detailing AT&T's Gigaton Goal and its associated methodology update. The Gigaton Goal aims to enable customers to reduce one gigaton of greenhouse gas emissions by 2035 through connectivity solutions. The report outlines AT&T's commitment to carbon neutrality by 2035 and its previous goal of achieving customer carbon savings ten times its operational footprint by 2025. It discusses the methodology developed in collaboration with Carbon Trust, aligning with current guidance from the European Green Digital Coalition and the World Business Council for Sustainable Development. The report elaborates on the net carbon impact assessment process, which measures the carbon savings enabled by AT&T's technology and services. It defines key concepts such as baseline scenarios and first, second, and higher order effects in carbon abatement calculations. The report emphasizes the importance of maintaining consistency in the calculations and the need for a conservative approach to avoid overestimating carbon savings.