Executive Summary

• Legrand has won the Best Reuse or Recycling of Products, Energy, or Data Centre Infrastructure category at the Data Centre World Awards with its Keor FLEX Modular UPS.
• Keor FLEX is designed for minimising waste, extending the lifecycle of resources and allows individual power or bypass modules to be replaced, refurbished, or redeployed independently.
• The modular UPS proves that sustainability and performance are not mutually exclusive. By designing circularity into the core architecture, Legrand has created a UPS platform that extends asset life, reduces waste, lowers energy consumption, and supports evolving AI workload.

Legrand, a global leader in electrical and digital building infrastructures, announced that its Keor FLEX three-phase modular Uninterruptible Power Supply (UPS) has won the Best Reuse or Recycling of Products, Energy, or Data Centre Infrastructure category at the industry-leading Data Centre World Awards 2026.

The award recognises solutions that minimise waste, extend the lifecycle of resources, and contribute to a more sustainable and secure technology future. Keor FLEX was selected for its modular, hot-swappable architecture, high recyclability, and industry-leading efficiency, demonstrating how critical power systems can be engineered for long-term reuse rather than replacement.

Presented at Data Centre World London (4–5 March at ExCel London), the awards celebrate innovation and operational excellence across the data center industry.

Engineering Circularity into Critical Power

Unlike traditional monolithic UPS systems that require full-system replacement at end-of-life, Keor FLEX was engineered from the outset for lifecycle extension and modular reuse.

Its true hot-swappable modular architecture allows individual power or bypass modules to be replaced, refurbished, or redeployed independently – significantly reducing end-of-life waste and extending overall system longevity.

The system’s “pay-as-you-grow” design enables operators to deploy only the capacity they need, when they need it. This avoids over-provisioning, reduces embodied carbon, and prevents stranded infrastructure assets.

Keor FLEX achieves:

• 98.6% efficiency in online double conversion mode (TÜV certified)
• Over 99% efficiency in ECO mode
• 85% recyclability rate (IEC/TR 62635)
• Over 69% recyclable metal composition
• 50% recycled packaging content
• 1.2 MW in just 2.8 m² footprint

By integrating advanced Silicon Carbide (SiC) technology and a low-impedance internal busbar architecture, Keor FLEX reduces thermal stress and extends semiconductor and power module lifetimes – supporting longer, more reliable reuse.

Designed to Reduce System-Wide Waste

Keor FLEX is engineered to reduce lifecycle waste by avoiding unnecessary battery replacement. Its universal battery interface lets operators keep and reuse existing VRLA, Li-ion, or Nickel-Zinc battery strings during upgrades, reducing premature disposal and the embodied impact of new battery packs. Its internal busbar architecture reduces cable joints and common thermal failure points, while a distributed resilience design – validated through FMECA modelling – limits unnecessary module swaps and extends operational life.

The system also supports smart-grid functionality, including peak shaving and fast frequency response, helping data centers reduce grid stress and protect upstream infrastructure from AI-driven power spikes.

In addition, Keor FLEX has been validated as AI-ready, with performance aligned to high-density GPU workloads and tested under AI load conditions in accordance with IEC 62040-3 standards.

Sustainability Without Compromising Performance

“Data centres are under pressure to deliver more compute power while reducing environmental impact,” said Marc Marazzi, Vice President at Legrand Data Centre Solutions Europe.

“Keor FLEX proves that sustainability and performance are not mutually exclusive. By designing circularity into the core architecture, we’ve created a UPS platform that extends asset life, reduces waste, lowers energy consumption, and supports evolving AI workloads—all while improving total cost of ownership. This reflects Legrand’s broader sustainability commitments, including being awarded an ‘A’ rating by CDP for the second consecutive year.”

With scalability from 100 kW to 1.2 MW per frame, and up to 4.8 MW in parallel, Keor FLEX supports mid-size facilities through to hyperscale campuses.

For more information about Keor FLEX, visit here.