Optimization of Roubaix's real estate assets - 160,000 m²

Background

For ecological and economic considerations, the city of Roubaix contacted Accenta in 2017 with the aim of reducing the energy consumption of its real estate portfolio.

To do this, Accenta offers to closely monitor energy consumption and manage HVAC equipment, since it represents a significant portion of the city’s expenses.

The city of Roubaix plans to deploy a solution by implementing buildings as they go along. It therefore needs to gather data from its buildings on a single platform. The solution must also be compatible with working with different maintainers.

Tailor-made solutions from Accenta

The infrastructure study results in the calibration and then the installation of a technical building management system, Smart BMS. This infrastructure is deployed according to the city’s schedule and according to the buildings and allows the optimized control of all HVAC equipment.

On the technical side, the main components installed are as follows:

✅ Temperature and CO2 probes
✅ Connected meters
✅ Customized management interfaces

This equipment is connected to the following platforms, provided to maintainers:

✅ Effipilot, the hypervision platform, where alerts are set to identify equipment malfunctions and drifts
✅ Insight, the solution for monitoring consumption data and CO2 emissions

This artificial intelligence software controls the HVAC equipment of each building in real time, based on the analysis of consumption and ambient indicators (temperature, humidity, brightness, weather, etc.) recorded in the different functional areas.

An Energy Management service, in addition, advises maintainers for maximum energy performance.

The networking of these elements across the city’s entire real estate portfolio forms a unique, centralized and intelligent system.

Customer benefits

The Smart BMS implemented by Accenta offers several advantages for the city and its residents:

✅ Real-time monitoring of all buildings, on PC and smartphone, of all consumption and anomalies, thanks to dashboards configured according to the customer’s wishes

✅ The edition of enforceable consumption data on the entire building stock, regardless of the maintainer, thanks to the application of the IPMVP protocol

✅ Controlled comfort for all buildings in the city

✅ Compliance with the BACS decree

✅ Contribution to the objectives of the tertiary decree with facilitated transmission of information expected annually on the Operat site

✅ A guarantee of performance through a co-engagement with one of the maintainers on part of the stock (41 buildings)

✅ Energy expenditure and CO2 emissions reduced by 21% in average during the 2023/2024 heat season

“With Accenta’s Smart BMS, comfort is guaranteed, which is our priority. We are also seeing an acceleration in the reduction of energy consumption, with savings of €600,000 each year since 2019.”

Magdalène Deleporte, Deputy Mayor of the city of Roubaix in charge of maintenance, major projects and zero waste