Silver national award for an innovative project »Waste Water Treatment System in the Nikola Tesla A Thermoelectric Power Plant, Obrenovac«
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Silver award for innovation from the SŠGZ
Foto: Lightshade Visuals
June 2025:
The company Esotech, in collaboration with the Public Utility Company Velenje, successfully participated in the 2025 Innovation Competition organized by the Savinja–Šalek Chamber of Commerce (SŠGZ).
The submitted innovation was the “Plant for the Treatment of Process Water – Centrifugate”, which was developed and implemented as part of a project at the Velenje Municipal Wastewater Treatment Plant. The innovation contributes to improved treatment of process water, greater energy efficiency, and a reduction in carbon footprint and greenhouse gas emissions.
For this innovation, we received a silver award, which was presented to us at a ceremony held at Hotel Plesnik in the Logar Valley in early June 2025.
Sincere thanks to all colleagues and experts who contributed their knowledge, dedication, and committed work to the successful implementation of the project and the development of this innovation.
Hike to Smrekovec
May 2025:
On Saturday, May 10, 2025, we went on a wonderful family hike to Smrekovec, which proved to be an excellent way to connect in a relaxed and active setting. Surrounded by nature, we enjoyed the fresh air and beautiful views with our families.
Smrekovec, as a popular destination, offers not only exceptional views but also provides an opportunity for participants to relax, connect, and recharge with the power of nature. The hike was suitable for all ages, as both the youngest and more experienced hikers joined in. With this event, the company Esotech once again demonstrated its commitment to health, good spirits, and fostering connection among colleagues and their families.
The ascent to Smrekovec was truly the perfect way to welcome spring—with energy that will hopefully last long after the hike is over.
110kV Switchyard at Doblar Hydroelectric Power Plant
February 2025:
As part of the reconstruction and new construction of the 110 kV switchyard at the Doblar Hydroelectric Power Plant, we signed a contract with the company Kolektor Igin for the supply and execution of all auxiliary power systems within the switchyard. The scope of the auxiliary power system includes:
AC auxiliary power distribution boards,
Distributed AC auxiliary power distribution boards,
220VDC auxiliary power distribution boards,
110VDC auxiliary power distribution boards,
Rectifier,
Inverter,
Battery banks,
Diesel generator,
Auxiliary power cable connections.
The works at the site will be carried out in phases, as both Doblar 1 and Doblar 2 HPPs and the 110 kV transmission system will remain in operation. The project is expected to be completed in the first quarter of next year.
Provision of Services During the Overhaul of Unit 6
February 2025:
In February 2025, we signed multiple contracts with the client Thermal Power Plant Šoštanj (TEŠ) for various service packages to be carried out during the overhaul of Unit 6, scheduled for this year.
The planned scope of this year’s overhaul includes work on major technological unit systems, flue gas cleaning, and common facilities, specifically: boiler systems, turbine systems, post-combustion systems, flue gas cleaning systems, by-product management systems, and common plant systems.
Unit 6, recognized as the most advanced thermal energy production unit in this part of Europe, generates approximately one-third of Slovenia's total electricity production annually. The overhaul will be essential for ensuring the reliable and efficient operation of Unit 6 in the coming years. With carefully executed maintenance and upgrades to individual systems, the power plant will continue to operate with a high level of reliability, while also complying with stringent environmental and technological standards.
This will enable Unit 6 to remain a key contributor to the stable and secure electricity supply in Slovenia.
Contract Signing for the Construction of the Banjole Wastewater Treatment Plant (WWTP)
January 2025:
On January 31, 2025, the company Esotech, d.d. signed a contract for the implementation of the project "Design, Construction, and Trial Operation of WWTP Banjole-Bumbište." The contract includes the design, construction, and trial operation of the wastewater treatment plant with a capacity of 9,000 PE, equipped with a primary treatment stage and a new marine outfall.
The project will be executed under the FIDIC Yellow Book model.
This initiative is part of a broader EU-funded project covering the agglomeration of Medulin, Premantura, and Banjole. The total expected project duration is 27 months, encompassing design, permit acquisition, construction, and trial operation.
This significant infrastructure project will enhance wastewater treatment quality and contribute to improved environmental protection in the Municipality of Medulin.
Esotech, Joint stock company Company for Development and Implementation of Environmental Solutions and Power Technologies
Preloška cesta 1 3320 Velenje Slovenia EU
Telephone: +386 3 8994 500 Telefax: +386 3 8994 503 E-mail:
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