"AWS claims to have matched 100% of its electricity consumption with renewable energy in 2024, reporting a global power usage effectiveness (PUE) of 1.15 and a water usage effectiveness (WUE) of 0.15 liters per kilowatt-hour."
"Microsoft's fiscal year '25 reporting shows a global PUE of 1.17 and a WUE of 0.27 L/kWh for its fully owned data centers, along with emissions tracking through its Emissions Impact Dashboard."
"Google provides both market-based and location-based emissions data across all three scopes through its Google Cloud Carbon Footprint, along with regional carbon-free energy indicators."
The cloud industry promotes a sustainability narrative emphasizing efficiency and renewable energy. However, comparing the environmental impact of specific cloud workloads is challenging due to inconsistent data disclosures from major providers like AWS, Microsoft, and Google. Each company reports different metrics, such as power usage effectiveness and water usage effectiveness, using varying methods. While they all highlight energy efficiency and carbon tracking tools, the absence of standardized metrics complicates direct comparisons, especially as cloud adoption increases for AI workloads.
Read at ComputerWeekly.com
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