The Internet of Things has become one of the main levers for modernising public heritage in connected territories. By continuously collecting data from sensors deployed in buildings, public spaces, and urban infrastructure, an IoT platform helps optimise energy performance, occupant comfort, and maintenance, while meeting local authorities' regulatory and climate requirements.
Through a hypervision approach, IoT unifies supervision across an entire estate: schools, gyms, town halls, swimming pools, museums, libraries, performance venues, administrative offices. Data is centralised, tracked over time, and put to use, shifting from reactive management to predictive management of public assets, whether at the scale of a single building, a district, or an entire metropolitan area.
Pioneering smart cities such as Lyon, Dijon, and Paris demonstrate every day that harnessing IoT data at scale reduces consumption, improves service quality, and supports ambitious ecological transition strategies. At the local authority level, this data-driven approach becomes a genuine governance tool for more sustainable, more resilient territories.
For a full overview, see our complete guide to connected and sustainable territories.
Table of contents
- How Is IoT Transforming BMS/BEMS Control of Public Buildings?
- How Does IoT Improve Energy Performance in Tertiary Buildings?
- How Does IoT Simplify OPERAT Reporting and Regulatory Compliance?
- How Does IoT Optimise Flow Counting in Connected Territories?
- How Does IoT Help Preserve Artworks and Cultural Heritage?
- Why Are an IoT Platform and a Hypervisor Essential for Territories?
- What Are Kuzzle's Advantages for Connected and Sustainable Territories?
- How Can a Heritage IoT Approach Be Structured Across a Territory?
- FAQ on IoT, Heritage Management, and Connected Territories
How Is IoT Transforming BMS/BEMS Control of Public Buildings?
Building management systems (BMS) and centralised technical management (BEMS) are at the heart of performance strategies for public tertiary buildings. Historically, these systems control heating, ventilation, air conditioning, lighting, or security through proprietary controllers that are often siloed and difficult to interconnect.
IoT adds a layer of connectivity and interoperability that turns these BMS/BEMS systems into genuine smart-building building blocks serving the connected territory. Low-power sensors (temperature, humidity, presence, door/window status, CO2, counters, equipment status) feed data in real time to an IoT platform that acts as a cross-functional hypervisor.
In practice, a metropolitan area can view, on a single interface, the status of hundreds of boiler rooms, air handling units, electrical cabinets, and lighting systems spread across its entire estate. Technical teams get dashboards contextualised by building type, geographic zone, or use case, making it easier to track drift, plan interventions, and prioritise investments.
Dijon Métropole, for example, chose an urban hypervisor incorporating IoT building blocks to supervise public lighting, buildings, video surveillance, and certain resident-facing services. This kind of approach illustrates the convergence between traditional BMS/BEMS systems and territorial IoT platforms, capable of federating multiple heterogeneous systems within a single architecture.
How Does IoT Improve Energy Performance in Tertiary Buildings?
Public tertiary buildings account for a very large share of cities' energy consumption, with drastic reduction targets set for the coming years. IoT becomes a strategic ally for reaching these targets while preserving occupant comfort and service quality.
Temperature, CO2, presence, and light sensors allow heating, ventilation, and lighting to be finely controlled based on actual usage rather than theoretical schedules. In a school, heating in an empty classroom can be automatically reduced; in a town hall, low-traffic areas can benefit from adaptive lighting based on presence and natural light.
IoT platforms also provide an aggregated, historical view of consumption by use (heating, hot water, ventilation, lighting, sockets), making it easier to detect drift, compare similar buildings, identify underperformers, and track action plans. Combined with advanced analytics, the data can trigger alerts in the event of abnormal overconsumption, a leak, or equipment malfunction.
Several major European cities have already demonstrated significant gains from IoT-based energy management, with savings of 15% to 30% on certain items after sensor deployment and the implementation of optimisation scenarios. In a context of budget pressure and rising energy prices, this fine-grained control capability becomes a key factor in sustainability for territories.
How Does IoT Simplify OPERAT Reporting and Regulatory Compliance?
Under France's Éco Énergie Tertiaire scheme, local authorities must monitor and improve the energy performance of their tertiary estate and report their consumption every year on the national OPERAT platform. This obligation requires consolidating data that is sometimes scattered across different energy suppliers, buildings, and systems.
An IoT platform, connected to electricity, gas, heat, or chilled water meters, can automate the collection of consumption data at the most relevant level: building, sub-station, use, or zone. The data is tracked over time, checked, and enriched (weather, occupancy, completed works) to build a robust reference base, essential for tracking regulatory targets.
Local authorities can thus more easily generate the indicators needed for OPERAT reporting, track reduction trajectories, and simulate the impact of renovation or operational optimisation work. This approach significantly simplifies the work of energy departments, limits the risk of error, and strengthens the ability to steer public energy transition policies.
In a smart city context, OPERAT data also becomes a lever for transparency and communication with citizens, when presented as public dashboards, interactive maps, or annual reports.
How Does IoT Optimise Flow Counting in Connected Territories?
Flow counting has become a major use case for connected and sustainable territories. It covers several realities: flows of people in buildings and public spaces, flows of vehicles in car parks or on roads, and flows of water, air, or energy in technical infrastructure.
In public buildings, footfall or occupancy counting sensors help adjust services to actual usage: cleaning, security, opening hours, ventilation, heating, lighting. A library, for example, can size its staff and spaces according to observed peak attendance, while a sports centre can adjust pool or room temperature based on the number of users.
At the urban scale, counting vehicle and pedestrian flows supports mobility and planning policies: adjusting signage, controlling lighting in pedestrian zones, optimising parking, and analysing routes through city centres. French cities are already using sensor networks to adjust public lighting and improve safety while reducing consumption.
Combined with an IoT hypervisor, these flows become valuable indicators for cross-referencing actual usage, energy performance, and service quality. A local authority can, for example, compare the number of visitors to a cultural facility with its energy footprint and define targeted improvement plans.
How Does IoT Help Preserve Artworks and Cultural Heritage?
Museums, archives, heritage libraries, and historic monuments are particularly sensitive to variations in temperature, humidity, light, and pollution. Local authorities pursuing an ambitious cultural policy must balance public access to artworks with strict conservation conditions.
IoT makes it possible to deploy discreet, low-power sensors in storage areas, exhibition rooms, and archive depots to continuously track critical parameters: temperature, humidity, light, UV, vibration, and water presence. The data is centralised in an IoT platform that automatically alerts staff when thresholds defined with curators are exceeded, making it possible, for example, to detect a shift in humidity and intervene before irreversible damage occurs to paintings or manuscripts.
By cross-referencing this data with the BMS/BEMS, local authorities can also optimise heating and air treatment systems to balance collection protection with consumption control. The IoT hypervisor thus becomes a genuine heritage management tool, in both the cultural and energy sense of the term.
Why Are an IoT Platform and a Hypervisor Essential for Territories?
As use cases multiply (BMS/BEMS, energy performance, OPERAT, flow counting, indoor air quality, artwork preservation, public lighting, irrigation, mobility), local authorities face an explosion of data and systems. Without a unified foundation, the risks of silos, duplication, and operational complexity increase sharply.
In practice, a local authority that deploys its IoT use cases without a common platform quickly ends up with as many interfaces as suppliers: one tool for public lighting, another for energy monitoring, a third for video surveillance. Each system operates in its own silo, each technical department has to learn a different tool, and it becomes impossible to cross-reference footfall data with energy consumption data to refine an action plan. Maintenance and support costs multiply accordingly, without any gain in overall visibility across the estate.
An IoT platform acts here as a cross-functional foundation for connected territories: it collects, standardises, secures, and stores data from sensors, controllers, business systems, and third-party applications over time. It offers open APIs, connectors for the main protocols (Modbus, BACnet, LoRaWAN, MQTT, OPC-UA, etc.), and analysis and visualisation capabilities tailored to each business unit.
The hypervisor built on top of this platform lets every department (energy, buildings, culture, roads, mobility, digital services) access contextualised dashboards while sharing a common data repository. This pooling is at the heart of the smart city concept: an event detected on one system can inform others, a single sensor can feed several use cases, and the same piece of data can serve operational management, reporting, and public policy evaluation all at once.
By choosing a scalable, interoperable, and sovereign IoT platform, local authorities protect their investments over the long term, avoid vendor lock-in, and retain control of their data, which becomes a strategic asset within the territory's intangible heritage.
What Are Kuzzle's Advantages for Connected and Sustainable Territories?
Kuzzle IoT positions itself as an IoT platform and hypervisor designed for local authorities, developers, and smart city stakeholders. The solution offers a sovereign foundation, hostable in the cloud or on-premise, allowing territories to retain control of their data and meet the security requirements of public information systems.
One of Kuzzle's main strengths lies in its open, interoperable architecture, capable of connecting to a wide variety of sensors, IoT networks (LoRaWAN, 4G/5G, etc.), BMS/BEMS systems, and existing business software. Thanks to ready-to-use connectors and unified APIs, the platform makes it easy to integrate use cases progressively, without disrupting existing systems or requiring a complete technological overhaul.
Kuzzle also offers advanced visualisation and supervision capabilities: customisable business dashboards, real-time mapping, alarm management, automation scenarios, and historical data tracking. Building departments can track energy performance and air quality, technical teams can supervise equipment, and cultural departments can monitor conservation conditions, all from a single, coherent, and secure environment.
Finally, Kuzzle supports local authorities throughout the design and deployment of their IoT projects, from initial scoping through to full-scale rollout. This support dimension, combined with a robust platform, makes Kuzzle a strategic partner for building connected and sustainable territories capable of evolving their use cases in step with citizens' needs and climate constraints.
How Can a Heritage IoT Approach Be Structured Across a Territory?
To make the most of IoT for heritage management, local authorities benefit from structuring their approach in four steps.
1. Map the estate and its uses. This first step involves cataloguing building types, floor areas, existing equipment and systems, data already available, as well as regulatory constraints and performance targets. This initial diagnostic is what allows the project to be properly scoped.
2. Prioritise high-value use cases. It makes sense to start with energy performance, indoor air quality, and regulatory tracking, topics with a fast, measurable return on investment, before gradually extending to flow counting, artwork preservation, or other urban services such as public lighting or parking.
3. Choose a unified IoT platform and hypervisor. This is the project's defining step: the chosen technical foundation, such as Kuzzle, will guarantee scalability, data pooling across departments, and overall consistency in the connected territory strategy over the long term.
4. Put data governance and decision-making in place. The success of the approach ultimately depends on involving the relevant departments (energy, buildings, culture, roads), clear data governance, and the ability to turn incoming information into day-to-day operational decisions, rather than dashboards that are only consulted occasionally.
This progressive approach delivers early results quickly while building a lasting foundation, capable of absorbing new use cases as the territory's needs evolve.
FAQ on IoT, Heritage Management, and Connected Territories
Is IoT reserved for large metropolitan areas?
No, IoT technologies are now accessible to all types of local authorities, from small municipalities to large metropolitan areas. Low-bandwidth networks, low-power sensors, and shared platforms make it possible to start with a few buildings or use cases, then scale up gradually based on needs and resources.
How long does it take to deploy a first IoT use case?
An initial pilot scope, a few buildings equipped with energy or air quality sensors, for example, can generally be deployed within a few weeks to a few months, depending on the complexity of the existing estate and data availability. The goal isn't to cover everything from the start, but to quickly demonstrate value on a limited scope before extending to the entire estate.
Do you need in-house technical skills to run an IoT platform?
A well-designed IoT platform is meant to be used by business teams themselves (energy, buildings, culture departments) through accessible dashboards, without requiring day-to-day development skills. Initial setup (sensor integration, connection to existing systems), on the other hand, requires technical support, often provided by the platform vendor or an integrator.
How does IoT integrate with an existing BMS/BEMS system?
IoT doesn't necessarily replace a BMS/BEMS system but complements it by adding connectivity, interoperability, and new data. Gateways and connectors bring information from controllers up to an IoT platform, which aggregates it with data from newly added sensors, providing a cross-functional view of the estate.
Is a territory's IoT data secure?
Data and communication security is a central concern in smart city IoT projects. A professional IoT platform implements encryption, authentication, access rights management, and traceability mechanisms, in compliance with public information system requirements. Choosing a sovereign solution, controlled by the local authority or its operator, further strengthens this level of protection.
Why choose a platform like Kuzzle for a connected territory project?
A platform like Kuzzle provides a unified, interoperable, and scalable foundation for managing all of a territory's IoT use cases. It allows investments to be pooled, prevents the proliferation of isolated solutions, keeps data under local control, and gives business teams visualisation and management tools tailored to their needs, in line with a sustainable smart city approach.
