Reducing environmental impact

Our energy-efficient data centers:

Improve energy performance through site-specific PUE targets
Use efficient cooling systems and operational best practices
Help reduce energy use, emissions, and operating costs

We monitor energy and water use across our global portfolio, audit sites for savings opportunities, and invest in targeted efficiency projects with measurable impact.

Energy conservation

We track utility energy monthly, monitor infrastructure in near real time, and set annual PUE targets based on real-world site conditions.

In 2025, targeted efficiency projects are expected to save more than 11,000 MWh annually. Our portfolio PUE was 1.38, and 53% of our managed and operating U.S. portfolio was ENERGY STAR-certified by managed IT capacity.

Water conservation

We prioritize water efficiency across our portfolio, especially in regions facing water stress. Our approach includes dry cooling systems that avoid water evaporation, high-efficiency plumbing fixtures, drought-tolerant landscaping, rainwater capture, leak detection, and water-efficient operating practices.

In 2025, 45% of total water supplied came from non-potable sources. We also improved global WUE by 15.7% year over year, while total water use increased only 3% between 2023 and 2025 as our managed portfolio grew 34%.

Biodiversity

We work to reduce our ecological footprint by building up rather than out, using space efficiently, and improving site conditions to better align with local ecosystems.

Our approach includes native and drought-tolerant landscaping, pollinator species, bird-friendly design features, beehives, green roofs and walls, rainwater capture, and measures to protect local wildlife habitats.

For example, at FRA18 in Frankfurt, we restored 10,000 m² of green space and expanded tree coverage to approximately 296 trees, supporting water infiltration, groundwater recharge, and local biodiversity.

Denmark disclosure: Action plan for energy projects Digital Realty Denmark 2023 – 2027

Estimated energy savings in annual MWh:

Solar panels 500 MWh
Chiller yard rebuild: 400 MWh
UPS upgrading: 87 MWh
Technical improvements: 62 MWh
LED upgrade projects (total): 16 MWh

Resource conservation