SPIE supports the low-carbon transition of the ALK pharmaceutical laboratory’s industrial site in Vandeuil (Marne)

Cergy, 5 February 2026 – SPIE Building Solutions and SPIE Industrie, French subsidiaries of SPIE, the independent European leader in multi-technical services in the areas of energy and communications, announce the completion of an electrification project for ALK, a Danish pharmaceutical laboratory, at its Vandeuil (Marne) plant. Completed in the summer of 2025, it will allow the site to reduce its CO₂ emissions by nearly 305 tonnes per year, while also improving its energy performance.

A pilot site for ALK's low-carbon transition in Europe

Committed to an ambitious low-carbon strategy, ALK, a Danish pharmaceutical laboratory specialising in the research and development of medicines for the treatment of severe respiratory allergies, has set itself the target of reducing its CO₂ emissions by 42% by 2030. To achieve this goal, replacing gas-powered equipment with electrical solutions across all its industrial sites has been identified as one of the key levers.

Building on several years of successful collaboration with ALK in maintenance operations and the construction of clean rooms, SPIE France's subsidiaries have been asked to participate in the energy transition at the Vandeuil plant.

Transitioning from 100% gas to low-carbon energy

This operation called upon the complementary expertise of SPIE Building Solutions and SPIE Industrie. They performed the dismantling of two gas boilers and the installation of three heat pumps with a total capacity of 1.2 MW. They also worked on modifying the piping, integrating a new electrical substation and adding a small heat pump for domestic hot water production.

At the same time, the SPIE teams carried out the design and electrical integration of the new equipment into the customer's high-voltage loop by installing a new transformer station. They also conducted, from March 2023, the design and consultation phase that initiated the project. After analysing the site's technical requirements and constraints, SPIE proposed four scenarios to ALK to reduce CO₂ emissions and optimise the site's energy consumption.

Replacing the gas boilers with heat pumps not only allows a significant reduction in CO₂ emissions, aiming to save 305 tonnes per year, but also the optimisation of electricity consumption. The "cascade" operation of the three heat pumps makes it possible to automatically adjust the power deployed according to the site's actual needs: only one pump operates during periods of low demand, with the others being triggered gradually based on the increase in energy requirements.

A turnkey solution supported by multi-technical expertise

This collaboration perfectly illustrates the ability of SPIE's teams to combine their skills to offer bespoke multi-technical solutions. Work began in late 2024 and was completed in mid-August 2025. The technical installations have been operational ever since.

"This project to electrify the Vandeuil industrial site is a perfect illustration of the strength of our relationship with ALK. Following several successful collaborations, we are now taking a significant step forward with this pilot project, which enables us to help our customer launch its low-carbon strategy," comments Jean-François Lassort, Head of HVAC Engineering at SNH Conraux, a subsidiary of SPIE Building Solutions.

"The ability of our two subsidiaries, SPIE Industrie and SPIE Building Solutions, to work hand-in-hand was crucial to the success of this operation. It demonstrates our ability to combine our expertise to support our customers in their long-term energy transition," adds Alexis Kengne, Business Manager at SPIE Industrie.