Solar panels on noise barriers: energy from existing infrastructure
In Himberg, a town in Lower Austria, solar panels were installed on an existing noise barrier along a busy road. A total of 60 lightweight solar panels have been integrated into the existing structure. This generates electricity without the need for additional space. The project is an example of how existing infrastructure can be utilized for sustainable energy generation.
Application to existing sound barrier
Noise screens are placed to protect local residents from traffic noise. In this case, the choice was made to give the screen a second function. The solar panels used weigh only 3.3 kilograms per square meter. This allowed the system to be attached without having to modify or reinforce the noise screen. The panels were glued using a technique that preserves the appearance of the screen and ensures stable fastening.
Purpose and social relevance
The project uses infrastructure that is already in place. This means that no additional space is needed for solar power generation. This is relevant in areas where available space is limited or where spatial interventions are undesirable. In addition, the project contributes to the reduction of CO₂ emissions. The annual electricity generated is approximately 15,500 kilowatt hours. This avoids an estimated 7.2 tons of CO₂ emissions per year. This is equivalent to the average emissions from about 30,000 gasoline miles.
Technical implementation
The solar panels were placed horizontally on the screen, using a bonding technique suitable for applications on existing surfaces. Due to their low weight, no structural modification was required. The power generated is supplied to the public power grid.
Result
The project in Himberg shows what is possible with existing resources:
- 60 solar panels were installed on an existing sound barrier.
- 7.2 tons of CO₂ emissions are avoided annually.
- 500 kWh of solar power is generated each year, enough for several households.
