We solve the most complex energy challenges
The energy sector is facing major challenges and opportunities. Global decarbonization efforts are accelerating the modernization of energy infrastructure. Europe is confronted with an urgent need to upgrade its aging grid in order to meet its 2050 targets. Nearly 40% of transmission lines are more than 30 years old and require extensive modernization. Companies must adapt or risk falling behind due to rising costs and regulatory pressure.
Elnos Group integrates advanced technologies to build energy systems that are resilient, efficient, and ready for the future. From renewable sources to digitalized networks, our solutions deliver innovation and reliability.
Power Plants
Wind Power Plants – high-performance solutions proven in practice
We hold the absolute regional record with participation in the construction of 7 wind farms with a total capacity exceeding 550 MW. Our team covers all phases of wind power plant construction in the areas of e-BoP and CW works, ensuring maximum efficiency and reliable delivery.
Hydropower Plants – a long-term source of clean and stable energy
From major EPC projects such as HPP Dabar (159 MW) to the revitalization of existing systems – we build and modernize large, medium and small hydropower plants across the region and Europe, ensuring efficiency, reliability and long service life.
Solar Power Plants for a faster transition to sustainable energy
With more than 200 MW of completed solar capacity and additional projects under development, we provide EPC solutions that include the design, construction, grid connection and maintenance of solar power plants – in line with the highest European standards.
Substations
AIS Substations – Reliable Performance Across All Voltage Levels
We design, construct, and modernise AIS substations up to 400 kV, fully adapted to local regulations and operational conditions across Europe.
GIS Substations for Compact and Secure Infrastructure
We specialise in the electromechanical installation of GIS substations in demanding environments – from geothermal zones to dense urban systems – ensuring the highest levels of safety and efficiency.
HVDC Converter Stations for the Stability of Europe’s Interconnections
We deliver installation works on high-voltage converter stations that connect national grids, ensuring reliable energy exchange across the integrated European market.
Transmission Lines
400 kV Transmission Lines for Highest-Level Power Transfer
We build and modernise the most demanding 400 kV transmission corridors, applying advanced technologies to ensure a secure, stable, and scalable European power network.
220 kV Transmission Lines for Regional Grid Stability
We deliver complex 220 kV transmission line projects along key power corridors, including works in protected and hard-to-access areas across Europe.
Transmission Lines up to 130 kV – Connecting Local Systems
We provide engineering and construction of 110 kV and 130 kV transmission lines that connect local distribution and industrial systems with wider regional and national power networks.
Infrastructure
Reliable Electrical Infrastructure for Growing Communities
We execute electrical works for strategic transport and urban projects – highways, tunnels, railways, and public lighting – building the foundations of sustainable and functional community development.
Industrial energy solutions for all types of facilities
We design and implement electrical installations, automation, and system control for the most demanding industrial environments – from refineries and biomass heating plants to specialised manufacturing facilities.
Overhead Contact Lines for Modern Transport Systems
We design and build electrical networks that power railway, tram, and trolleybus systems — ensuring reliability, efficiency, and compliance with the highest industry standards.
Digitalisation
SCADA Systems
We develop and implement SCADA systems for monitoring and control across the power sector and industrial facilities. Our solutions enable efficiency, security, and rapid response – from renewable power plants to transmission and distribution networks.
IoT Devices
Smart meters, sensors and controllers for power and industrial infrastructure. Our solutions enable real-time monitoring, precise control and efficient system maintenance.
Analytics & Energy Efficiency
Through advanced analytics and digital tools, we enable real-time consumption monitoring, system optimisation and energy savings. Our solutions enhance efficiency, reliability and sustainability across all sectors.
Production
Container Substations for Mobile and High-Demand Energy Environments
We manufacture container substations designed to power heavy construction machinery, delivering flexible and efficient solutions for demanding construction sites and industrial projects.
Battery Energy Storage Systems (BESS)
We develop and implement next-generation BESS solutions that ensure grid stability, optimise energy consumption and enable seamless integration of renewable energy sources. With more than 30 years of experience in the power sector, we combine proven reliability with innovation in emerging energy technologies.
Data Centers
We design, build and modernise data centers with advanced infrastructure. From network solutions and micro data centers to modular containerised systems, we deliver complete IT solutions tailored to the needs of modern business.
Electrical Cabinets for Reliable and Precise System Control
We manufacture a wide range of electrical cabinets — from protection and control to automation and compensation – tailored to industrial and energy facilities and fully compliant with European standards and CE norms.
Transformer Stations for Stable and Efficient Power Distribution
We design and manufacture prefabricated concrete transformer stations that ensure long service life and reliable operation within power distribution systems.
Plastic Security Seals for Maximum Equipment Protection
Uniplom seals provide a reliable solution for protecting meters and electrical equipment from tampering and unauthorised access.
Our Projects
Our projects reflect a vision of the future – sustainable, secure and energy-efficient. Elnos Group proudly delivers complex projects across Europe, including power plants, transmission lines, substations and key infrastructure, improving quality of life and supporting energy progress.
Latest News
EPC Contract Signed for Vetrozelena – the Largest Wind Farm in the Balkans
Elnos Serbia has signed an EPC contract with Sinohydro Corporation Limited, a subsidiary of Power China Construction Group, for the construction of the Vetrozelena wind farm (300 MW), which will be the largest single wind power project in the Balkans.
A Spectacular Anniversary Celebration at the Sava Center
Elnos Group marked a major milestone with a ceremonial celebration at the Sava Center, bringing together eight decades of industrial heritage and three decades of modern business operations. It was an evening defined by pride, unity, and strong emotions.
The new generation of Elnos scholars
Following the completion of the selection process, Elnos BL has chosen seven new scholarship students who will join the company’s program for the 2024/2025 academic year — a program dedicated to supporting future electrical engineers.
From Banat to Britain – The Green Story of Elnos Serbia
In the energy sector, success belongs to those who possess vision and the courage to turn dynamic change into a genuine opportunity.
Three major projects in the Czech Republic
In the Czech Republic, Elnos Group is participating in the modernization of the power grid through three major projects for the reconstruction of 400 kV transmission lines.
Win-win leader of the green transformation and the golden sponsor of OIE Serbia 2025
As a key player in the most ambitious green projects, Elnos Group confirms its status as one of the most reliable allies in the energy transition.
A decade of Elnos Group in Iceland
This year, Elnos Group celebrates ten years of successful operations in Iceland, the only country in the world that generates 100 percent of its electricity from renewable energy sources.
High School students on internship at Elnos Group
Students from the “Nikola Tesla” High School of Electrical Engineering in Banja Luka completed their practical training program at our company this week.
SET 2025: AI in service of modern energy
Elnos Group played a key role at the sixth Energy Summit Trebinje, held from March 19 to 21, 2025, under the slogan “Building the energy future of the western Balkans together.”
What Our Clients Say
On the Tuna substation construction project, Elnos Group demonstrated how effective cooperation contributes to project success. They were professional, dedicated, and results-oriented. It was a pleasure working with them. We look forward to continuing this successful collaboration and warmly recommend them as a partner for complex high-voltage system projects.
Large infrastructure projects require trusted partners – and Elnos Group distinguishes itself with professional and efficient execution. Their commitment and top-tier expertise played a key role in projects for transmission system operators such as TenneT, 50Hertz, and Amprion. We look forward to continued cooperation.
Our long-term cooperation with Elnos Group on investment projects has shown that we can always rely on them. Their expertise, responsibility, and dedication add value and ensure success at every stage. We look forward to continuing this successful partnership.
The construction of Čibuk 1 and Čibuk 2 wind farms was a major challenge, and Elnos Group proved to be a key partner in its successful completion. Their professionalism, dedication, and practical problem-solving approach make them extremely reliable collaborators. We look forward to continued cooperation.
“When it comes to reliable partners in infrastructure projects, Elnos Group stands out for its professionalism and results-driven approach. Over the years, we have built a relationship based on trust and shared goals, and we confidently recommend them as a proven and high-quality partner.”