OUR COMPANY OUR G OVERNANCE OUR PE OPLE OUR C OMMUNITIES THE E NVIRONMENT THE NUMBERS A ND SMALL PRINT Staying Relentless in Our Focus on Climate Action We’re facing the challenge of a generation. Thankfully, we all have an opportunity to make meaningful changes to the ways we live, work, and connect to better contribute to a more sustainable future. It will take collaborative, coordinated action, as well as investment from many parties at local and global levels, to combat climate change, and we are committed to doing our part. By making significant and sustained cuts to GHG emissions and strengthening our climate resilience, we are helping protect the planet we all share. Earned an A- We scored at the Leadership Level for our 2021 CDP Climate Change Response Scope 1 and 2 Emissions Our science-based target for combined scope 1 and 2 G HG emissions addresses the emissions generated from our operations. The vast majority of our operational emissions—a little over 97% in 2021—comes from the purchased electricity used to power our offices, retail stores, data centers, and our nationwide network. As of December 2021, we sourced 100% of our p urchased electricity from renewable energy, enabling us to eliminate all of our scope 2 GHG emissions. To learn more about the wind and solar projects that helped us achieve this goal, check out the Energy Ma nagement section. In tandem, we’re also working to reduce our scope 1 r eliance on fossil fuels by investing in sustainable solutions across a variety of projects, including reducing reliance on diesel in data centers, implementing air-cooling enhancements and energy efficiency measures at cell towers, and investing in electric vehicles and alternative network backup power sources like batteries. Scope 3 Emissions We are taking responsibility for our full carbon footprint b y engaging stakeholders across our value chain to identify emissions hotspots and implement sustainability initiatives. To help us get a full view of scope 3 GHG emissions, we measure and report on 10 categories that are relevant to our business. We firmly believe that businesses must account for their entire footprint to drive the change needed to support a 1.5°C future. Climate Change Continued One area where we’ve collaborated to build more efficiencies is within our transportation distribution network. For example, through a recent shipping logistics optimization project we reduced the number of truck and van trips needed to deliver equipment and backup generators to our sites. Strategically grouping deliveries so that vehicles hit the road fully loaded has taken 1,146 trucks off our streets and highways, saving nearly $3 million in capital expenditure, and reducing scope 3 GHG emissions by 2,241 metric tons in 2021. 2021 CORPORATE RESPONSIBILITY REPORT 55 Our 2021 Emissions Profile 7. 3 3 M metric tons (MT) CO 2 e* Scope 1: 70,350 MT CO 2 e Scope 2: (location-based ** ): 2,893,728 MT CO 2 e Scope 2: (market-based *** ): 0 MT CO 2 e Scope 3: 7,263,741 MT CO 2 e Scope 1: Direct emissions generated from T -Mobile facilities including offices, retail stores, data centers, customer experience centers, and network operations. Scope 2: Indirect emissions from purchased e lectricity required to power all T-Mobile facilities. Scope 3: Indirect emissions generated from u pstream and downstream activities, including the products T-Mobile sells and the services it uses, including corporate travel. * Total carbon footprint uses scope 2 market-based emissions. CO 2 e is a measure used to compare the emissions from various greenhouse gases based upon their global warming potential ( OECD Glossary of Statistical T erms—Carbon dioxide equivalent definition ). C alculations are based on the GHG Protocol methodology and the EPA M andatory Greenhouse Gas Reporting Rule. Baseline year is 2016. ** T he location-based method reflects the average emissions intensity of g rids on which energy consumption occurs. *** T he market-based method reflects emissions from electricity that c ompanies have purposefully chosen.

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