Management of Montigny-lès-Cormeilles's real estate assets - 51,600 m²
Optimized surface ➡️ 51,600 m² ➡️ 33 various buildings (schools, town hall, sports complexes, etc.)
Reference energy ➡️ Gas
Background
The town of Montigny-lès-Cormeilles (95) has undertaken a proactive approach to energy modernization of its real estate assets. Its property portfolio represents 51,600 m² spread across 33 buildings for various uses (schools, town hall, community centers, sports complexes, community and cultural buildings, etc.), managed by a single maintenance provider. Faced with non-compliance with the BACS and Tertiary decrees, the community sought to implement a smart energy management system to improve the overall performance of its buildings.
Challenges
The town was facing several major issues:
- Regulatory non-compliance (BACS and Tertiary decrees)
- Overconsumption linked to performance deviations not detected upstream
- Scattered and unreliable energy data
- Budgetary constraints requiring a funded solution
- Need to collaborate closely with the existing maintenance provider
- Desire to retain full ownership of its energy data
Solutions and Objectives
Accenta deployed a tailor-made Smart Management solution to answer the town’s challenges:
✅ Installation of Class B building management systems in the 13 most energy-intensive buildings
✅ Deployment of hypervision software to monitor consumption across the entire portfolio from a centralized platform
✅ Implementation of smart alerts for the maintenance team to quickly identify malfunctions
✅ Regular digital rounds conducted by Accenta’s Energy Management teams, in addition to the maintenance team’s interventions
✅ Secure contractual framework, via an 8-year co-contracting agreement with ENGIE Solutions, ensuring lasting alignment between all stakeholders
✅ Full project financing by Accenta, for implementation with no impact on the local authority’s budget
Expected results:
✅ Compliance with regulatory requirements (BACS decree),
✅ Measured reduction in energy consumption and CO₂ emissions ranging from -13% to -34% depending on the building,
✅ Improved comfort, responsiveness, and long-term energy performance.
