Why CyrusOne Ranks Among the Most Sustainable Data Centres

CyrusOne has been ranked number  8 in Data Centre Magazine’s 2025 Top 100 Data Centre Companies list, reflecting its sustained momentum in the global digital infrastructure sector. 

This placement signals its strategic advances in capacity scale, technical execution and sustainability performance relative to peers across the North American, European and Asian markets.

From development to operations: The CyrusOne model

CyrusOne is a developer and operator of large‑scale data centre infrastructure, providing “turnkey” digital real estate to cloud providers, hyperscalers and enterprise customers. 

Its business spans site acquisition, design, construction, power and cooling provisioning, connectivity and operations. The company’s model leans on standardised construction practices – what it terms a “manufacturing‑driven” approach – to reduce build times, deliver predictable cost outcomes and integrate complex systems at scale.

In September 2025 CyrusOne elevated John Hatem to Executive Vice President, COO, assigning him oversight of global sales, procurement, design and construction to strengthen alignment between customer demand and delivery. 

“We’re seeing unprecedented demand from customers across industries who need infrastructure partners capable of delivering complex, mission‑critical environments at scale and at pace,” says John.

“I'm excited to lead our teams in meeting this broad market opportunity while taking a more visible role in demonstrating CyrusOne’s technical and execution capabilities across the industry.”

That focus is bearing fruit. In August 2025 CyrusOne partnered with Energy Capital Partners to form a joint venture to build a 190MW hyperscale campus in Bosque County, Texas, anchored by a dedicated power agreement with Calpine. The multibillion‑dollar development is one of the largest announced in the Dallas–Fort Worth region this year.

Global footprint and European expansion

By mid‑2025, CyrusOne operated more than 55 data centres across North America, Europe and Asia, embedding sustainability into each new build and retrofit. 

In Europe, the company is pushing forward on multiple fronts. In Hanau, Germany, it obtained permits for a new campus (FRA5) comprising two buildings with CyrusOne Boosts Sustainability in Global Data Centre Growth18,000 m² of technical space and 54 MW of IT capacity. The design targets a power usage effectiveness figure of 1.27, full renewable electricity sourcing, heat reuse and biodiversity enhancements such as green walls. 

In its UK pipeline, CyrusOne unveiled plans for a £1.2bn (US$1.6bn) development in Buckinghamshire, outside London, named LON6. The facility aims for 90MW IT capacity over 30,000m², a 71% biodiversity net gain, green roofs and walls, free‑air cooling, rainwater reuse and EV charging infrastructure.

In Italy, the company is pursuing a second data centre in Milan, called MIL2, which would deliver 54MW across 18,000 m² using closed‑loop cooling and heat reuse provisions. To support its European real estate ambitions, CyrusOne in April 2025 appointed James Miller as Senior Director of Site Acquisition, Europe, to coordinate the sourcing and regulatory work required across jurisdictional markets. 

James said: “We are at a pivotal moment in our sector and CyrusOne is well placed to provide world‑class services to further cement its position as a leading provider.”

Sustainability, finance and metrics

CyrusOne has tied its growth to sustainability and accountability. Between 2021 and 2025 its reported business volume rose by 70%, while carbon emissions fell by 29%, driven by energy efficiency upgrades, renewables sourcing and customer participation in carbon‑free electricity procurement. Its 2030 net‑zero target is validated under the Science Based Targets initiative and includes both direct (Scope 1) and indirect (Scope 2) emissions. 

“Over the past six years, we’ve been incorporating sustainability in all aspects of our business,” says Eric Schwartz, CEO of CyrusOne, in the company’s 2025 Sustainability Report.

“The maturity of our sustainability programme has produced tangible benefits and opportunities while laying the groundwork for mandatory reporting.”

Kyle Myers, Vice President of Environmental, Health, Safety and Sustainability at CyrusOne says: “Achieving TRUE certification for zero waste is a testament to our commitment to sustainability and operational excellence.”

On the capital markets front, CyrusOne has increasingly turned to green and sustainability‑linked financing. Its 2024 fundraising totalled US$12.6bn, with US$11.2bn tied to emissions targets. 

In 2025 it secured an additional US$9.7bn to support the expansion of its global portfolio while reinforcing the connection between finance and environmental performance. 

This mix of technical delivery capability, disciplined capital strategy and environmental metrics underpins CyrusOne’s rise to number 8 in the Top 100 Data Centre Companies.