OUR COMPANY OUR GOVERNANCE OUR PEOPLE OUR COMMUNITIES THE ENVIRONMENT THE NUMBERS AND SMALL PRINT Energy Management The Power of Sustainable Energy Management Tracking, managing, and optimizing our energy use is foundational to T-Mobile’s energy management strategy. Our first priority is to reduce energy consumption by leveraging innovative technologies that drive energy efficiencies and savings across our company. Then, we work to source the energy we do use as sustainably as we can by drawing from renewable energy projects across the country. CLEAN ENERGY, DIVERSE ENERGY T-Mobile is driving change in the clean energy sector with our foundational support of the Diversity in Clean Energy (DiCE) coalition. The mission of DiCE is to grow an inclusive ecosystem that provides access to equitable opportunities for direct and indirect clean energy suppliers. Through this work, we can help support a just transition from fossil fuels to renewables. Creating Efficiencies Across Our Network As data consumption around the world continues to grow, we aim to sustain our growth and pace of our 5G network expansion without a corresponding escalation in electricity use. Because the majority of our energy consumption comes from powering our network, network-related efficiencies have a massive impact on our overall energy footprint. We set a bold goal of reducing our energy consumption by 95% per petabyte of data traffic by 2030, from a 2019 baseline. That means we will, across our business, use 20 times less total energy each time a customer views a webpage or streams a song, compared to 2019. We’re making progress—and we won’t stop until we get there. OUR ENERGY EFFICIENCY TARGET Achieve a 95% reduction in energy consumption (M Wh) per petabyte (PB) of data traffic by 2030, from a 2019 baseline. PROGRESS TOWARD ACHIEVEMENT 15.2% We achieved a 14.4% reduction in energy consumption (MWh) per petabyte (PB) of data traffic between 2019 and the end of 2021, using 349 MWh of energy per PB of data traffic on our network in 2021. In 2021, we continued to realize network synergies from the merger, strategically decommissioning thousands of targeted cell sites that were deemed redundant, which resulted in an estimated savings of approximately 500,000 MWh. We also turned on features across approximately half our network sites that enabled our radio-network equipment to optimize energy consumption and drive further efficiencies. This is in addition to the cooling enhancements we’ve made at select cell sites by replacing air conditioning units with direct air-cooling fans to more efficiently control the on-site temperature of cell towers. Recognized by the Environment+Energy Leader Awards for our energy management efforts #3 on the National Top 100 List of the EPA Green Power Partnership’s Top Partner rankings BUILDINGS THAT RUN ON LESS Energy smart offices: T-Mobile has installed energy-efficient infrastructure and LED lighting with motion sensors across millions of square feet of renovated office spaces. To further optimize efficiency, we installed energy management systems across thousands of retail locations. The new systems include enhanced power monitoring and smart thermostats that allow us to build schedules that make our HVAC units more efficient, without affecting customer or employee comfort. Plus, they allow our teams to diagnose and fix HVAC issues remotely and see which units may be running inefficiently so we can proactively replace them before they fail. Combined with our LED lighting and lighting controls upgrades at hundreds of stores, we’re able to save approximately 45,000 MWh annually. We’re also continuing to further improve energy efficiency at our data centers. We’re implementing controls and systems that allow us to analyze even more granular data on power usage and make data-driven decisions on how to make our facilities more efficient. In corporate offices, we’re exploring equipping heavily trafficked spaces with motion sensors to drive smarter energy savings today and for years to come. 2021 CORPORATE RESPONSIBILITY REPORT 56