Energy Savings

Green Walls are insulators that save energy for your building.

• Reduce AC Bills: during the summer, hot walls cause temperatures to rise inside buildings, increasing demand on cooling systems and consuming more energy.  A Green Wall surface temperature is reduced when covered with plants, reducing the wall temperature and building cooling load. Green Walls can reduce wall temperature as much as 15°F which results in significant air conditioning savings.
• Green Wall’s Heat Energy is Lower than Concrete Wall: In 1979, Green Wall research by Akira Hoyano (Professor, Tokyo Institute of Technology), a pioneer in passive and low-energy architecture, revealed that the heat energy that passed through a Green Wall was significantly lower than a concrete wall.  The Tokyo City Government recently undertook a study that not only confirmed Professor Hoyano’s earlier findings, but found more evidence that Green Walls help cool buildings and combat the Heat Island Effect.

With the Green Wall tests shown here, it was discovered that Green Wall panels reduce the wall temperature by 10°C (see the below graph). It was also concluded that Green Wall panel reduce energy transfer into a building by ~0.24kWh/m². Green Wall energy savings calculations depend greatly on the direction the wall is facing, the sun’s angle, and many other factors.