E-commerce environmental impact: data centers, delivery emissions, and what IT leaders can do

E-commerce generates a growing carbon footprint from data centers, last-mile delivery, packaging waste, and product returns. Data centers consumed about 415 terawatt-hours of electricity in 2024, roughly 1.5% of global supply, and the IEA expects that figure to more than double by 2030. Transportation remains the largest single source of emissions, with the last mile being the most carbon-intensive segment due to low package density and failed delivery attempts. Returns are a distinctive liability for online retail, with higher return rates than in-store purchases triggering reverse logistics, repackaging, and often disposal. However, e-commerce can be more efficient than physical retail when delivery vans serve multiple households per trip, avoiding the energy costs of lighting and heating retail floors. The outcome depends on how underlying systems are designed. IT leaders can reduce e-commerce emissions by auditing hosting providers for renewable energy use, migrating to green cloud platforms, integrating sustainability metrics into dashboards, and establishing a Scope 3 baseline. Long-term moves include AI-powered demand forecasting to reduce overstock and returns, building circular economy capabilities like resale programs, and partnering with logistics providers using electric fleets.