Cool Green Wall · Living wall with smart cooling
A living wall that cools the space around it and shows its own data
Recycled-plastic GridMats panels with built-in sensors and misting, and a live dashboard. At Conscious Collective 2025: 7–8 °C cooler air at the wall.
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The Cool Green Wall on the auditorium walls at Conscious Collective 2025, Vikhroli, Mumbai, 13 December 2025
Recorded at Conscious Collective 2025
What the wall did
Air temperature at the wall. Recorded by the wall’s own sensors during the event, 11–14 December 2025, and shown live on screen beside the wall. A different wall, climate or space gives different figures, so we size each wall and agree with you what to measure.
The story
Reclaiming cool at Conscious Collective 2025
Conscious Collective 2025, a Godrej Design Lab initiative, took “Reclaiming Cool: Beating the Heat Together” as its theme. It ran on 11–14 December 2025 in the former Interio factory on the Godrej campus at Vikhroli, Mumbai, and drew more than 18,000 registered guests.
The 32 ft auditorium walls would normally be lined with plywood or gypsum board, used once and thrown away. Instead, GridMats and the Godrej teams built 2,048 sq ft (190 m²) of living wall: 16 panels, each 4 ft wide and 32 ft high, planted with 500 plants by the Godrej Horticulture team. Every panel and board in it is recycled plastic: polypropylene in the GridMats panels, multi-layered plastic waste in the boards behind them.
Sensors set in the GridMats cells read the wall continuously, the misting built into the panels ran itself from those readings, and a live digital twin beside the wall showed visitors what it was doing. It became one of the most photographed spots at the event. Godrej featured it on the Conscious Collective site as “Cool Green Wall – By GridMats”, calling it
“a scalable model for climate-positive urban design”.
After the event the wall was taken down and its materials went to Godrej Horticulture for reuse. The design is now a modular, monitored product, and GridMats filed a patent application in 2026 for a green-wall cooling module with sensors.
Sources: Godrej’s showcase page, “Cool Green Wall – By GridMats” (opens in a new tab) (archived) · Godrej Enterprises Group press release (opens in a new tab)
At a glance
- Event
- Conscious Collective 2025, a Godrej Design Lab initiative
- Theme
- “Reclaiming Cool: Beating the Heat Together”
- Dates
- 11–14 December 2025, with a preview night on 11 December
- Venue
- The former Interio factory on the Godrej campus, Vikhroli, Mumbai
- Guests
- 18,000+ registered
- Wall
- 2,048 sq ft (190 m²): 16 panels, each 4 ft wide and 32 ft high
- GridMats
- 200+ m² (2,150+ sq ft) of panels in recycled polypropylene
- Plants
- 500, planted by the Godrej Horticulture team
- Sensors
- 30: 8 temperature, 10 moisture, 8 humidity and 4 air quality
- Misting
- 48 points, run automatically from the sensor readings
- Afterwards
- Dismantled; the materials went to Godrej Horticulture for reuse
How it works
Recycled plastic, plants, water and data in one wall
Side section, not to scale. The sensing and the dashboard are GridMats IoT; the boards are MLP boards.
- Wall, partition or frame. The system fixes to an existing wall or a light frame. At Conscious Collective it lined the 32 ft auditorium walls.
- MLP board. A rigid backing board pressed from multi-layered plastic waste such as chip packets and tetra packs. It takes water without rotting or swelling.
- GridMats panel. Open-cell panels in recycled polypropylene, fixed on the boards. The cells hold the growing medium in place on a vertical face.
- Cocopeat and plants. Light cocopeat fills the cells. The plants are chosen with the horticulture team for the light, shade and climate of the site.
- Misting and irrigation. A pump lifts the water to the top of the wall, and it flows down by gravity through a line built into the GridMats panels to the misting outlets (blue in the drawing). They cool the air in front of the wall, and the same line waters the plants: 48 points at the event.
- Sensors. Set in the GridMats cells (yellow in the drawing): temperature, humidity, soil moisture and air quality, read continuously. 30 sensors at the event.
- Controller. Runs the misting automatically from the sensor readings by switching the pump.
- Live digital twin. A dashboard shows every reading, panel by panel, on a screen beside the wall, for visitors and for the team that looks after it.
From bare wall to living wall, 6–11 December 2025
Live digital twin
The wall shows its own data
Every panel reported its temperature, humidity and soil moisture, and the air-quality readings joined them on one dashboard. The screen beside the wall showed the readings as they happened, and our team watched the same dashboard to keep 500 plants healthy on 200 litres of water over two days.
On a permanent wall the readings are logged, so the effect can be measured through the seasons and the watering planned from data.
Where it fits
Walls that work hard in the heat
Event and auditorium walls
A living backdrop in place of single-use plywood or gypsum, taken down after the event and reused.
Offices and lobbies
A green, cooler wall where people work and wait, with the readings on a screen.
Factories and warehouses
Planted, misted walls by hot work areas, loading bays and rest areas, with sensors to show the effect.
Facades and boundary walls
Greener, cooler frontages for offices, factories and campuses.
Campuses, malls and public spaces
Green, cooler air and a visible climate story where people gather.
Your wall
Tell us where it is and what you want it to do. We come back with a concept and a price.
Pictures
From Conscious Collective 2025
Specifications
| Build | GridMats open-cell panels in recycled polypropylene, on boards of recycled multi-layered plastic (MLP); cocopeat; plants chosen for the site |
|---|---|
| Cooling | Water pumped to the top of the wall and fed down through the GridMats panels by gravity to built-in misting outlets, switched automatically from the sensor readings; the plants are watered through the same line |
| Sensing | Temperature, humidity, soil moisture and air-quality sensors set in the GridMats cells, read continuously (GridMats IoT) |
| Display | A live digital twin: the readings on a screen beside the wall and for the maintenance team |
| Size | Modular, designed per wall. At Conscious Collective: 16 panels of 4 × 32 ft, 2,048 sq ft (190 m²), on 200+ m² of GridMats |
| Water | 200 litres over 2 days for 500 plants at the event |
| After use | Dismantled and reused: at Conscious Collective the materials went to Godrej Horticulture |
| Patent | Patent application filed 2026, for a green-wall cooling module with sensors |
| Price | Designed and priced per wall, once we have seen the site |
Event figures were recorded by the wall’s sensors at Conscious Collective 2025.
How a project runs
- Tell us about the wall: where it is, its size, the sun and shade, and the water and power points nearby. Photos help.
- We design the panels, planting, misting, sensors and dashboard with you and your landscape team, and price the wall.
- We install with your landscape team and the local workforce: boards and panels fixed, filled and planted, misting and sensors commissioned, the dashboard live.
- The misting runs automatically from the readings; your team sees every reading on the dashboard and looks after the plants. For an event, the wall comes down afterwards and the materials go for reuse.
Watch
More from GridMats
GridMats Solar Walkway
GridMats IoT
Pallets and MLP boardsPlan a Cool Green Wall
Tell us about your wall
For an event, an office, a factory or a facade: send us where the wall is, its size and a few photos. We come back with a concept and a price for your site.
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