September 02, 2025
01Blog
Today, solar energy is increasingly being integrated into functional solutions—from rooftops to transport infrastructure. A particularly innovative shift is the use of bifacial solar modules as noise barriers along roads or railways: such structures reduce noise, generate green energy, and save infrastructural space.
Understanding how these structures affect radio signal permeability, especially for mobile connectivity, is an essential condition for their implementation. Measurements conducted by scientists in Lithuania within the 800–2800 MHz range confirmed: regarding horizontal polarization, solar modules behave like traditional metal walls; however, in the case of vertical polarization, they offer an advantage—part of the signals penetrate through, particularly in the 1900 MHz range.
1. Grigiškės Highway (Vilnius–Kaunas–Klaipėda):
An integrated 20.7 kW solar power plant—a unique concept in Lithuania where the total length of the modules reaches 56 m.
56 bifacial solar modules were installed between 14 noise wall segments.
Forecasted generation: approximately 16,000 kWh per year, dedicated to road infrastructure needs, such as lighting for road signs.
2. Railway section Kyviškės–Valčiūnai (LTG Railway, Vilnius district):
A 22–22.2 kW solar power plant equipped with 60 bifacial 370 W Solitek Solid Bifacial modules.
Forecasted annual generation: up to 13.2 MWh (13,200 kWh), with the energy used on-site for railway infrastructure purposes.
Both projects combine noise reduction functionality with an electricity-generating system, reducing maintenance costs and emitting no $CO_2$ into the environment.
How do noise barriers with integrated solar modules perform in real life?
Such solutions provide practical, tangible benefits:
For cities and residents: Reduced noise and strong mobile connectivity—the signal does not weaken near the noise barriers, even while traveling.
For infrastructure developers: The combination of a noise barrier + solar power plant helps save costs—fewer connectivity fluctuations and lower energy supply expenses.
For travelers and professionals: In both trains and cars, the connection remains stable and reliable, even right next to the road or railway.
Environmental aspect: Locally produced electricity reduces $CO_2$ emissions and excess loads on the electrical grid.
More than just a theory—SoliTek pilot projects demonstrate that:
Horizontally polarized signals: Solar modules behave exactly like traditional walls.
Vertically polarized signals: The modules allow part of the signal to pass through, especially in the 1900 MHz range.
In summary: SoliTek glass-glass solar modules installed in noise barriers along highways and railways provide a double benefit: they generate green energy and reduce noise without compromising mobile connection quality.
02Blog
Solar power plants are rapidly gaining popularity both in Lithuania and across the globe. However, many people—even those who already own them—still don't know some of the most interesting facts about how solar modules work, how they are made, and their various applications. Here are ten of the most unexpected facts about solar modules that might surprise even the experts!
A 402 kW solar installation has been completed on a large-scale building in Vienna, Austria. The system utilizes 1,088 high-efficiency SoliTek modules.
What links the Eiffel Tower to a roof in Vienna? You might be surprised to learn that the answer is 320 meters.
While the Eiffel Tower reaches 320 meters into the Parisian sky, a massive building in Vienna stretches that exact same distance along the ground. And today, that rooftop is doing more than just providing shelter—it’s generating clean, green energy!