Physical intervention + urban climate intelligence
BleuGreen Technologies is developing practical, low-energy interventions for streets, buildings, public spaces and major venues—solutions that can be field-tested and deployed progressively, alongside the sensing, mapping and control platform that can ultimately coordinate them at urban scale.
Physical intervention systems and the coordination platform are in active development.
A practical path to scale
Immediate intervention.
Intelligent coordination.
Start with one place. Learn from the result. Scale what works.
Physical responses can begin locally. Sensing, mapping and control make each deployment more precise—and allow many interventions to become a coordinated urban system.
Why it matters
“Forty degrees, inside and out, leaves very little room for joie de vivre.”
Heat resilience is not only about protecting infrastructure or lowering indoor temperature. It is about preserving the ordinary life of the city—the café terrace, the market, the square, the walk home, the conversation on the pavement.
BleuGreen is developing a system that can create and coordinate islands of refreshment across the urban fabric, so people can keep moving, meeting, dining, working and lingering outdoors even through the hottest periods.
The aim is not to air-condition the city out of being itself. It is to help the city remain itself in a hotter climate.
Physical interventions
BleuGreen is developing a family of physical responses that can be tested, deployed and refined independently. The city-scale intelligence platform is designed to make those interventions work together later—not to delay action today.
Not every heat problem requires permanent infrastructure. Mobile teams equipped with the BleuGreen CoolBlaster—our portable, high-capacity directional cooling apparatus—can move directly into streets, plazas, markets, festivals, queues, transit areas and other heat-stressed places, providing targeted relief while generating real-world operating data for future permanent deployments.
A mobile island of refreshment that can be sent where heat, exposure and public activity make relief most useful. On the hottest days, cooling can come to the street rather than asking everyone to retreat indoors.
A discreet urban element for pulsed, locally controlled cooling in gathering places and pedestrian space.
A stationary pulsed-cooling cannon for esplanades, large boulevards and other big public spaces. It extends the same cooling logic as La Brise into a larger fixed deployment—approximately a 750 mm barrel, about 150 L/h of water flow, a 60–70 m throw, and up to 50° upward inclination for higher façades and strongly radiant urban surfaces.
Treat exposed building surfaces as controllable thermal layers—integrated with the architecture rather than imposed upon it.
Reduce the local impact of concentrated hot exhaust where conventional cooling equipment rejects heat into the city.
Reuse existing boiler and radiator distribution with reversible chilled-water capacity and slim fan assistance—improving useful cooling in summer and helping cast-iron radiators move warmth farther into the room in winter.
Large public venues
Municipal stadiums, arenas and major civic venues create a very specific climate problem: large numbers of people, strong solar exposure, limited air movement and sharply different conditions from one seating section to another.
BleuGreen’s approach is to treat the venue as a series of controllable microclimates rather than one enormous space. Section-level temperature, humidity and airflow sensing feeds the urban climate platform, allowing cooling to be directed only where conditions justify it.
A perimeter evaporative line can provide broad background conditioning to incoming air, while larger directional units such as Soixante-Quinze can pulse cooling toward hotter seating zones, concourses, queues and exposed areas. The system then measures the result, reduces output, redirects it or stops entirely.
The objective is not continuous maximum cooling. It is measured intervention by zone — sense, predict, intervene, measure, adjust.
Potential applications: municipal stadiums · arenas · festival grounds · transport hubs · large event plazas · temporary civic gatherings
Concept studies shown for design development only. Dimensions, performance and engineering details are indicative and subject to validation.
Why a platform
The physical interventions do not have to wait for a complete city platform. They can be tested and used locally, measured in the field and improved from real operating experience.
The deeper opportunity is to connect those responses. At city scale, interventions become more effective when they know where to act, when to act, how strongly to act—and when not to act at all.
That is why BleuGreen is developing the intelligence layer that can coordinate them as the system grows.
Build a living picture of the city.
Anticipate heat before it becomes exposure.
Choose the smallest useful response.
Coordinate distributed interventions.
Measure the result and improve the next decision.
A design premise
Design beyond the obvious request.We’re not designing only for what cities are asking for today.
We’re designing what they will ask for once they understand what is possible.
Cities already know they need relief from heat. The opportunity is larger: make that relief predictive, integrated and precisely controlled—so the city can respond intelligently before brute force becomes the only apparent option.
How it works
The platform brings multiple layers together so heat can be understood as a dynamic urban condition rather than a single weather reading.
Polished Haussmann-scale view of urban climate intelligence: sensing, predictive modelling, human exposure, and coordinated cooling responses feeding a live city model.
Observe
Respond
Predictive, not merely reactive
If the model sees that a west-facing stone square is likely to become uncomfortable later in the afternoon, it can prepare a measured response before the entire surface mass has absorbed the day's heat.
Heat accumulation and low airflow indicate a likely comfort problem.
A modest roof or surface treatment reduces the coming load.
A façade or civic element operates briefly where pedestrian exposure is highest.
Wind changes; the model reduces or redirects intervention.
Observed results update the next control decision.
Illustrative sequence only. Actual control logic will depend on validated models, sensing, local constraints and field performance.
From streetscape to interior
When the outdoor microclimate is refreshed, the architecture can do part of the work. Cooler street air can enter naturally through open windows, move across apartments toward the interior courtyard, temper the courtyard air mass, and then rise and escape through stack effect.
The façade and cornice systems condition the outside air only. They are not ducts into the building. The building remains largely passive: residents open windows, pressure differences and buoyancy move the air, and the block begins to breathe.
Condition the public realm well, and the benefit can travel indoors.
Our approach
Not maximum cooling. Not maximum water. Not maximum machinery. The minimum effective intervention, chosen with enough intelligence to know when more would simply be waste.
Understand the actual local condition before acting.
Put resources where the expected human and thermal benefit is greatest.
Combine modest interventions when one large response is unnecessary.
Continuously adjust as weather, use and urban conditions change.
A civic principle
Urban heat should be managed
as standard city infrastructure.
Cities can protect people and preserve public life without abandoning their commitment to reduced energy consumption.
By measuring heat, anticipating risk and coordinating precise, low-energy interventions, we can respond to extreme temperatures without surrendering our cities to widespread conventional air-conditioning.
When dangerous heat becomes predictable, protection should become planned.
What the system can optimize
About BleuGreen
BleuGreen Technologies is a U.S.-based development company built around a Franco-American idea: difficult climate problems do not always require brute-force answers.
Our work combines architecture, industrial design, urban systems thinking, engineering and software development. The goal is not merely to deliver cooling, but to preserve outdoor urban life, public sociability and the everyday pleasures that make a city worth inhabiting—while reducing the pressure for widespread conventional air-conditioning.
We believe cities should treat extreme heat as a standard infrastructure responsibility—protecting people and preserving public life while continuing to reduce energy consumption.
Collaborate
We are interested in conversations with cities, researchers, engineers, software developers, manufacturers, designers and partners working on climate resilience and adaptive infrastructure.