Warehouse Automation Can Cut Carbon Emissions by 25 Percent

Density drives down emissions

Logistics operators can slash their carbon footprint by up to 25 percent through warehouse automation—one of the sector's most underutilized sustainability strategies, according to two recent studies.

The emissions reductions stem from a straightforward principle: automated systems enable denser vertical storage, which allows facilities to be built 40 percent smaller than manually operated warehouses handling the same capacity. Smaller buildings require fewer construction materials, less land, and critically, less volume to heat—the single largest energy expense in warehouse operations.

Global warehouse automation firm Exotec commissioned both studies, which were included in the company's annual ESG report. The first was conducted with ADEME, France's state agency for ecological transition, as a life-cycle analysis. The second partnered with management consultancy Argon & Co to compare five different picking technologies across multiple scenarios. Both reached the same conclusion: compactness is the most powerful lever for reducing both construction impact and ongoing energy consumption.

Performance, not just sustainability

Andreas Stöckl, Sales Director for Exotec in Europe, noted that warehouse managers typically prioritize operational metrics—storage capacity and throughput speed—over environmental considerations. The business case for automation addresses both.

"The question for warehouse managers is often what increased warehouse performance costs, in both money and carbon," Stöckl explained, as first reported by The Energyst. "That is where automation can make a significant difference without the need to worry about altering floor space."

While robotic systems consume more electricity than manual equipment, the studies found that lower construction costs, reduced heating requirements, and performance improvements more than offset the increased power draw. The real environmental gain comes from avoiding expansion altogether—extracting maximum performance from existing square footage rather than building new facilities.

Material choices compound savings

Beyond operational efficiency, Exotec is addressing embodied carbon in its products. The company now uses green steel—manufactured from up to 80 percent scrap metal in electric arc furnaces—for components in its Skypod II automated warehouse system. This substitution reduces each system's carbon footprint by 30 percent, equivalent to more than 600 tonnes of CO₂ or the annual energy consumption of 240 UK homes.

Since July 2025, Exotec has included carbon figures in every customer quote, allowing procurement teams to evaluate climate impact alongside cost from the outset.

Why it matters

As logistics companies face mounting pressure to meet sustainability targets, these findings reveal that warehouse design and automation represent low-hanging fruit. Unlike transportation electrification or packaging redesign—which dominate sustainability discussions—warehouse density improvements deliver immediate, measurable emissions reductions while simultaneously improving operational performance. For an industry searching for cost-effective decarbonization pathways, building upward instead of outward offers rare alignment between financial and environmental objectives.

Stöckl concluded that suppliers will need transparent environmental data to remain competitive. "If we don't, the industry risks missing the biggest, most cost effective, opportunity to cut its emissions," he said.

These findings were first reported by The Energyst.