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Client Case6 August 2026

How this global fashion retail group structured its ISO 50001 approach with Wattseeker

More than 400 stores, disparate sub-metering technologies, one single goal: achieving ISO 50001 certification without reinventing the existing measurement infrastructure.

An ISO 50001 certified store

A few years ago, an international ready-to-wear clothing retail group launched an ISO 50001 certification programme across its network. Every store already had sub-meters, but from different brands and with different communication protocols depending on the country and on the banners acquired over time. The challenge was to bring this heterogeneous data together in a single tool.

For confidentiality reasons, the company's name cannot be disclosed in this article, but the project clearly illustrates the challenges faced by large retail groups engaged in an energy efficiency programme.

Existing sub-metering and a software need

The group did not need new sensors. Each point of sale was already reporting its consumption data through sub-meters installed over the years, often inherited from purchasing decisions made locally. Some stores used an electrical sub-meter from one brand, others a different device, with data formats specific to each supplier.

This fragmentation is precisely what led to the choice of the Wattseeker energy management software. The company subscribed to the software layer only, without changing its metering fleet.

The Wattseeker software aggregated the existing data flows into a single interface, whatever the data source. For a group of this size, avoiding a massive hardware replacement represented a considerable saving in time and budget.

Centralised data, access tailored to each level

Wattseeker's strength lies in its ability to adapt to the group's different levels of governance.

A store manager reviews the data for their own point of sale: consumption, deviations, any alerts.

A regional management team sees all the stores in a country and can compare performance between similar sites.

Executive management, finally, has a consolidated worldwide view, useful for prioritising investments or tracking progress towards certification.

This cascading structure avoids a common pitfall in large groups: dashboards that are too global to be actionable locally, or conversely local data that never reaches the strategic level.

Everyone in the group has access to exactly what they need in order to act.

Software supporting ISO 50001 certification

The ISO 50001 standard requires rigorous monitoring of SEUs (Significant Energy Uses), as well as the ability to demonstrate continuous improvement in energy performance. This is precisely where the software delivered the most value.

Wattseeker makes it possible to monitor SEUs continuously, store by store, with no manual re-entry. The platform also automates the production of the reports required for the certification audit, a task that, across 400 stores, would have been a heavy workload if it had to be carried out manually.

The software also includes a feature that supports building and tracking a concrete action plan to reduce consumption. Teams identify the biggest consumers, prioritise actions and verify over time that the measures taken really produce the expected effect. ISO 50001 certification requires proof that an action plan exists and is followed over the long term.

Finally, the Wattseeker software plays an awareness-raising role among field teams. Store managers have a visual interface that helps them understand where their room for improvement lies and involve employees in the energy efficiency approach.

Key takeaways on energy governance in multinationals

This project highlights a common reality among international retailers. A heterogeneous metering fleet is not an insurmountable obstacle to an energy optimisation programme. A well-designed energy software can interface with existing equipment, whatever its origin, and turn scattered data into a consistent analysis tool at every level of the organisation.

For managers of international groups considering ISO 50001 certification, this group's experience shows that it is not always necessary to replace the existing metering infrastructure.

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