Silver national award for an innovative project »Waste Water Treatment System in the Nikola Tesla A Thermoelectric Power Plant, Obrenovac«
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WWTP Petrijevci – obtaining occupancy permit
Photo: Stane Jeršič
December 2025:
On 8 October 2025, the Petrijevci WWTP received the occupancy permit for operation.
The project was implemented under the FIDIC Yellow Book (design, construction, and trial operation) and is based on proven conventional activated sludge (CAS) treatment technology. The plant’s nominal capacity is 9.800 PE.
Congratulations to the project team on the successful completion of the project.
WWTP Belišče – technical inspection
Photo: Stane Jeršič
December 2025:
The Belišče WWTP is currently in the final stage of obtaining the occupancy permit. The project was implemented under the FIDIC Yellow Book (design, construction, and trial operation) and is based on CAS, i.e. conventional wastewater treatment technology. With a capacity of 24.200 PE, the plant ranks among the larger municipal wastewater treatment plants in our reference project portfolio.
Congratulations to the project team on the successful delivery of the project, which ensures efficient and reliable treatment of municipal wastewater for the local community.
Esotech Marks the 11th Anniversary of the Šoštanj Kindergarten with a Donation
October 2025:
Upon the invitation of the Šoštanj Kindergarten, we attended a pleasant gathering on 21st October 2025 marking the 11th anniversary of the kindergarten’s construction, which Esotech operates within the framework of a public–private partnership. On this occasion, the President of the Management Board of Esotech, Mr Marko Škoberne, presented the kindergarten’s principal, Ms Milena Brusnjak, MSc, with a donation in the amount of €2.500 for the purchase of new didactic materials.
We were pleased to contribute to improving the conditions for the children and employees in the kindergarten – we believe that the new materials will enable even more creative and high-quality work and we look forward to further cooperation with partners in the local community.
Thank you to the Šoštanj Kindergarten for the pleasant event and collaboration!
Esotech at the Professional Conference CROVIK 2025
October 2025:
This year, we once again actively participated in the professional conference CROVIK 2025 – “Aktualnosti u vodoopskrbi i odvodnji” (Current Developments in Water Supply and Sewerage), which took place from 7th to 11th October 2025 in Vodice, Croatia. The event traditionally brings together leading experts, companies, and institutions from the field of water supply, wastewater collection, and wastewater treatment from across the region.
Participation at CROVIK 2025 represents an important opportunity for us to exchange professional knowledge, ideas, and experience, to network with partners, and to strengthen visibility and reinforce our presence in the Croatian and wider market.
Professional excursion to the Mariborski otok Hydropower Plant
September 2025:
A sincere thank you to the team of “Dravske elektrarne Maribor” (DEM) for the warm welcome at the Mariborski otok Hydropower Plant (HPP) during our professional excursion. Your statement that successful projects are always the result of mutual partnerships built on respect, expertise, and the warmth of human relations, is something we at ESOTECH fully share and agree with.
This visit carries special symbolic value for us. This year marks 30 years since we were selected as the contractor for the revitalisation and additional installation of the first phase of the Drava Hydropower Plants – a project that included the refurbishment of the Mariborski otok HPP, the Dravograd HPP, and the Vuzenica HPP.
The contract signed in July 1995 also formed the basis for the restructuring of ESO Montaža into what is today ESOTECH, d.d. As part of this milestone of exceptional importance for Esotech, the President of the Management Board, Mr Marko Škoberne, presented a photocopy of the signed contract to the General Director of DEM, Mr Damjan Seme.
Since this pivotal moment in Esotech’s history, our relationship with DEM has grown far beyond business partnership – we are bound by history, trust, and genuine relations. We continue to develop our cooperation year after year, with the same level of respect and professionalism that we established from the very beginning.
It is said that those who have no history cannot have a future – and we would add: with reliable partners, the future is even brighter.
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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