Contributors
Colt Technology Services (Colt), the global digital infrastructure company, released its fifth Sustainability Report today. The report details progress across the Colt Group - including Colt Technology Services (with Lumen EMEA) and Colt Data Centre Services - in the areas of Environmental, Social and Governance, from 1st January to 31 December 2025. It highlights Colt’s strong commitment to its ambitious global targets, showcasing the milestones, initiatives, partnerships and programmes delivering real impact, bringing to life one of its core values: “We can change the world.”
The new report tracks steady progress towards Colt’s commitment to a 90% absolute reduction in Scope 1, 2 and 3 greenhouse gas emissions by 2045 against the baseline year of 2019, with a 40% decrease in total CO₂e emissions since the 2019 baseline. The report also highlights the growing impact of Colt’s circularity efforts, with €3.55 million invested in second‑hand equipment, over 41,000 items of network equipment given a second life, and strong progress in reuse and recycling supported by a network of established asset recovery and urban mining partners, building positively on last year’s foundations
Keri Gilder, CEO, Colt Technology Services said,
“In recent months, the crew of Artemis 2 captivated millions with breathtaking images of Earth - powerful reminders of both its extraordinary beauty and the urgency to protect it. There has never been a more critical moment to act on climate change, as temperatures, energy demand, emissions and sea levels continue to rise at an alarming pace. This is a responsibility we feel deeply. We know that real progress depends on accountability and science‑based targets. Our latest sustainability report sets out the strides we’ve made across our ESG ambitions, and while there is more to do, I’m very proud of how far we’ve come.”
Highlights of progress detailed in the report include:
Continued renewable energy sourcing
95% of electricity was sourced from renewable energy through the purchase of renewable energy certificates (RECs), moving closer to its commitment to procure 100% renewable electricity for all sites globally by 2030
Improved energy efficiency
An estimated 23 GWh reduction in electricity consumption as a result of key initiatives focused on decommissioning end-of-life network infrastructure equipment
Increased supply chain sustainability
64% of Scope 3 emissions were linked to suppliers with Science Based Targets or sustainability commitments, increasing supplier alignment and showing continued improvement in supply chain engagement.
Continued fleet electrification progress
82% share of Colt’s fleet comprised battery-powered and hybrid electric vehicles, making strong progress towards a target of achieving a 75% fully electric fleet by 2030
Industry recognition
Colt secured a Platinum EcoVadis rating for the fourth consecutive year as well as a CDP ‘A-’ rating for its climate change disclosure and 'A' for supplier engagement
Strengthened net zero strategy, integrating Lumen EMEA activities
Colt strengthened its net zero strategy by integrating Lumen EMEA activities and renewing its decarbonisation roadmap.
Extended deep commitment to social responsibility towards supporting the communities in which Colt and its employees – ‘Colties’ – live and work
In 2025, €365,678 was donated to charities and 872 days were volunteered by Colt employees across the world with events including a “Tech Tea Party” to provide company and digital skills training for older members of its community (UK); digital inclusion sessions to support migrants and refugees (Spain); Zero Waste and waste segregation workshops to build everyday sustainable habits (Austria); and several beach cleans across different countries.
Continued efforts to promote gender diversity in the workplace and recruitment process
In 2025, women made up 33% of Colt Group's workforce, and 44% of new hires were women, supported by targeted programmes to address representation gaps and strengthen pathways for women's advancement.
Progressed Accessibility Roadmap by introducing global office accessibility and inclusivity standards, and providing accessibility training to over 230 developers.
Colt's Accessibility Playbook has guided consistent adoption of accessible design across the updated colt.net and future platforms.
Continued embedding sustainability into its network design, technology and engineering, increasing capacity and performance while reducing energy use.
Commenting on the report, Caroline Griffin Pain, Chief Legal Officer – Colt Technology Services said,
“Sustainability is part of how Colt makes decisions and grows as a business. We’re continuing to innovate, reduce our impact and support our people, while building trust along the way. There’s more to do, but our progress and the dedication behind it gives me confidence in the path ahead.”
Read the Colt Group 2025 Sustainability Report here.
