Introduction
A factory's environmental footprint is visible, smoke, waste, physical infrastructure. A company's IT footprint is not. It lives in data centers you'll never see, in devices that quietly draw power on standby, and in old laptops sitting in a storage closet instead of being properly recycled. That invisibility is exactly why it tends to get ignored. This guide breaks down where a typical company's digital footprint actually comes from, using verified figures from the International Energy Agency and the UN, and lays out practical steps that don't require a sustainability department to implement.
The Actual Scale of the Problem
It's worth anchoring this in real data rather than vague concern. The International Energy Agency estimates that data centers consumed around 415 terawatt-hours (TWh) of electricity in 2024, about 1.5% of global electricity consumption, having grown at roughly 12% per year over the previous five years. Electricity demand from data centers then grew 17% in 2025 alone, with AI-focused data centers growing even faster, at 50%. The IEA projects total data center electricity consumption will nearly double to around 945 TWh by 2030, reaching close to 3% of global electricity demand.
On the waste side, the UN's Global E-waste Monitor found the world generated a record 62 million tonnes of e-waste in 2022, up 82% from 2010, and rising toward a projected 82 million tonnes by 2030. Only 22.3% of that e-waste was formally collected and recycled.
The scale, by the numbers
global data center electricity use in 2024
IEA
projected data center electricity use by 2030
IEA
global e-waste generated in 2022
UN Global E-waste Monitor
share of that e-waste formally recycled
UN Global E-waste Monitor
Where Your Company's Digital Footprint Actually Comes From
Most companies picture "IT footprint" as one abstract thing. It's really four separate categories, each with different levers to pull.
Where the footprint comes from
Hardware & E-Waste
Manufacturing impact and end-of-life disposal across your device fleet.
Device Energy Use
Daily power draw across laptops, monitors, and peripherals, including standby.
Cloud & Data Storage
Electricity behind every file stored, backed up, and processed.
Cooling & Infrastructure
Often the single largest hidden overhead in a data center.
Worth noting on that last point: the IEA reports that cooling can account for over 30% of total electricity use in less-efficient enterprise data centers, compared to roughly 7% in efficient hyperscale facilities. That's a real, measurable efficiency gap between running your own server room and using a well-optimized cloud provider.
Practical Steps, Organized by Effort
Quick wins vs bigger moves
Quick wins
Low cost, start this month
- Audit and decommission unused cloud resources, idle servers, and forgotten subscriptions, this cuts both wasted spend and wasted energy
- Enable power management and sleep settings fleet-wide, rather than leaving it to individual defaults
- Default video calls to audio-only when video isn't adding value
- Consolidate redundant SaaS tools that duplicate the same function across teams
- Extend device replacement cycles where hardware still performs adequately, instead of routine full refreshes
Bigger structural moves
Plan over a quarter or more
- Migrate workloads from inefficient on-premise or legacy server rooms to well-optimized hyperscale cloud infrastructure, where cooling overhead is typically far lower
- Build a responsible e-waste program: partner with certified e-waste recyclers, and offer trade-in, refurbishment, or donation routes before disposal
- Choose vendors and cloud providers that publish sustainability data, efficiency metrics, and renewable energy commitments
- Build 'efficient by default' habits into engineering practices, reducing unnecessary redundant compute, avoiding unbounded data retention, and caching sensibly
Sources
- International Energy Agency, "Energy and AI" and "Key Questions on Energy and AI" (iea.org)
- International Energy Agency, "Data centre electricity use surged in 2025" (iea.org)
- U.S. Energy Information Administration, Annual Energy Outlook 2026 data center server electricity projections (eia.gov)
- UNITAR / ITU, Global E-waste Monitor 2024 (ewastemonitor.info)
This article reflects publicly available research as of July 2026. Energy and e-waste figures are updated periodically by these organizations, check current reports before citing specific numbers externally.
Frequently Asked Questions
What is Green IT?+
Practices and policies aimed at reducing the environmental impact of an organization's technology use, covering hardware lifecycle, device energy use, data center and cloud choices, and e-waste disposal.
How much electricity do data centers actually use?+
According to the IEA, data centers consumed about 415 TWh of electricity in 2024, roughly 1.5% of global electricity use, projected to nearly double to around 945 TWh by 2030.
Is moving to the cloud better for the environment than running my own servers?+
Often yes. IEA data shows cooling alone can account for over 30% of electricity use in less-efficient enterprise data centers, versus around 7% in efficient hyperscale facilities.
How big is the e-waste problem?+
The world generated 62 million tonnes of e-waste in 2022, an 82% increase since 2010, and only about 22.3% of it was formally recycled, according to the UN's Global E-waste Monitor.
What's the single easiest first step for a company to reduce its digital footprint?+
Auditing and decommissioning unused cloud resources and idle devices, a quick, no-cost action that reduces both wasted spend and wasted energy.