Microsoft has released its 2026 Environmental Sustainability Report, detailing the growing environmental footprint driven by the rapid global expansion of artificial intelligence infrastructure.
Writing in the report foreword, Microsoft Vice Chair and President Brad Smith, alongside Chief Sustainability Officer Melanie Nakagawa, emphasised that the shift toward AI is dramatically reshaping economies while increasing demand for energy, water, land, and raw materials. The tech giant asserted that innovation at this historic scale must be matched by a corresponding level of planetary responsibility, noting that sustainability can no longer be decoupled from corporate growth.
The company reported that its total greenhouse gas emissions across Scopes 1, 2, and 3 increased by 25 per cent year-over-year. This surge was primarily driven by the physical expansion of its data centre infrastructure. Additionally, Microsoft deliberately paused its use of non-additional, unbundled renewable energy certificates to focus capital on projects that bring net-new power directly to electricity grids. While this tactical pivot raised reported emissions in the short term, the company expects it to generate superior long-term environmental outcomes.
Scope 3 emissions continue to comprise the largest portion of the corporate footprint, but Scope 2 emissions experienced a significant jump, rising to 13 per cent of total emissions from nearly 2 per cent in the previous fiscal year. This dramatic shift highlights the critical role that energy systems across the broader supply chain play in dictating environmental outcomes. Despite these pressures, Microsoft successfully matched 100 per cent of its annual global electricity consumption with renewable energy during the 2025 fiscal year.
Amidst the growing emissions pressure, Microsoft achieved a major milestone by becoming water positive on a global scale. For the first time, the corporation replenished more water globally than it withdrew, returning more than 14 million cubic metres to local systems. Moving forward, the company intends to transition toward a highly localised approach, prioritising restoration initiatives within the specific water-stressed watersheds where its data centres operate.
Progress was also reported across waste reduction and circular economy initiatives. Microsoft has eliminated nearly all single-use plastics from its primary product packaging, reducing the remaining portion to just 0.07 per cent by the end of calendar year 2025. Furthermore, its cloud operations sustained a 92 per cent reuse and recycling rate for decommissioned servers and electronic components for the second consecutive year, whilst diverting 90.5 per cent of construction and demolition waste away from landfills across its seven global Circular Centres.
