Our Work in Energy Infrastructure and Power Systems

At ETHGroup, we take pride in delivering top-tier engineering and construction solutions across the power and energy sector. Our work spans from high-voltage substation design and modernization to automation system integration and renewable energy development and grid integration. With a focus on innovation, efficiency, and reliability, we support both industrial and regional power networks in their quest for stable and sustainable energy solutions.

220kV up to 400kV Substations

Leading the Way in High-Voltage Substation Development

ETHGroup excels in the design, engineering, and refurbishment of high-voltage substations, from 220kV up to 400kV. These substations are essential for managing the transmission of electricity across vast distances and ensuring grid stability in key regions. Our work includes full-scale upgrades to both primary and secondary equipment, ensuring reliability and long-term operational safety.

400/220/110kV Resita Substation Complete Refurbishment

Scope of Work

The Resita substation project involved the complete refurbishment of both primary and secondary equipment, including civil and electrical works. The modernized substation was equipped with advanced protection systems and automation, ensuring it could handle increased energy loads and maintain operational efficiency.

Project Impact

This project has significantly improved grid stability and ensured the long-term reliability of power transmission across the region.

Key Features

400MVA Autotransformer: Installed to boost capacity.

200MVA Autotransformer: Managed energy demands.

Automation and Protection Systems: Integrated to ensure real-time monitoring and fault detection.

Upgraded Control Systems: Modernized for enhanced operational oversight

Other 220kV to 400kV Substation Projects

Switching to 400kV voltage of the Portile de Fier - Resita axis
Refurbishment of Baru Mare 220/110/20kV Substation

110 kV Substation Expansions and Upgrades

Modernizing Regional Power Distribution

ETHGroup specializes in expanding and upgrading 110kV substations to meet rising energy demands. Our expertise in modernizing existing infrastructure ensures that these substations are equipped to handle higher capacities and integrate cutting-edge automation technologies. This process improves operational efficiency, safety, and long-term reliability.

110/20kV Substations Complete Refurbishment: Falciu, Husi, Vetrisoaia, Stanilesti, and Murgeni

Scope of Work

This bundled project involved the complete refurbishment of five 110/20kV substations, located in Falciu, Husi, Vetrisoaia, Stanilesti, and Murgeni. The work included design, engineering, civil, and electrical tasks to modernize the substations, integrating new equipment and control systems.

Project Impact

This project has enhanced the performance of regional power grids by increasing substation capacity and operational efficiency, ensuring they are ready to handle future growth in energy demand.

Key Features

20 x 110kV Bays Upgraded: Enhanced to increase power handling capacity.

SCADA Systems: Installed for real-time monitoring and control.

Protection Systems: Advanced fault detection systems for improved safety.

Upgraded Control Systems: Modernized for enhanced operational oversight

Other 110 kV Substation Expansions and Refurbishments

Replacing auxiliary power supply in Targu Lapus, Baia Mare 4, Baia Borsa, Tocila
Capacitor bank replacement - Frumusita, Liesti
Modernization of the MV neutral earthing systems in substation grids

Renewable Energy Grid Integration and Development

Connecting Renewable Energy Sources to the Grid

ETHGroup is a leader in developing and integrating renewable energy sources such as photovoltaic (PV) systems and wind farms into existing energy grids. Our projects cover the full spectrum of renewable energy development—from design and engineering to grid connection. We specialize in ensuring that renewable energy is efficiently and reliably integrated into both regional and national grids, supporting global sustainability goals.

60MW Ruginoasa Wind Power Plant Construction and Grid Connection

Scope of Work

ETHGroup was responsible for the construction and grid connection of the 60MW Ruginoasa wind power plant. The project involved designing a high-efficiency power collection substation, integrating advanced monitoring and protection systems, and ensuring that the wind farm could be seamlessly connected to the grid.

Key Features

60MW Wind Power Capacity: Designed to handle large-scale wind energy generation.

Power Collection Substation: Engineered to collect and step up wind-generated power.

Grid Connection: Integrated systems for efficient energy transmission into the national grid.

Design and Construction of 33/220kV Electrical Substation for 122.55MW Photovoltaic Power Plant (Calugareni)

Scope of Work

This project involved the design and construction of a 33/220kV substation specifically for the 122.55MW photovoltaic (PV) power plant in Calugareni. The substation was engineered to efficiently manage the output from the solar power plant, ensuring minimal energy loss and seamless integration into the national grid.

Key Features

33/220kV Step-Up Transformer: Essential for transmitting large-scale solar energy.

Advanced Automation: Control systems to ensure optimal grid integration.

Renewable Energy Grid Connection: Designed to minimize energy loss during power transmission from the solar plant to the grid.

Floating Photovoltaic Solar System and Grid Connection

Scope of Work

As part of a turnkey project, ETHGroup designed and implemented a floating photovoltaic solar system. This innovative project required custom engineering to ensure efficient energy collection and connection to the existing grid, while addressing the unique challenges of floating solar installations.

Key Features

Floating PV Panels: Designed to maximize space utilization and energy output.

Energy Efficiency: Advanced engineering for minimal energy loss during collection.

Seamless Grid Integration: Ensuring smooth transmission of solar energy to the grid.

Key Data From Our Projects

Our work and expertise have led to:

Substations Upgraded and Built

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MW of renewable energy connected to the grid

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220kV Bays

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110kV Bays

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400kV Bays

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MV Automatic Circuit Reclosers Deployed

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Transformer Units Installed and Commisioned

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Medium Voltage Bays Refurbished

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Contact Us to Discuss Your Project Needs

Ready to take your project to the next level? Contact ETHGroup today to discuss how our comprehensive range of services can meet your specific needs. Whether you’re looking for electrical design expertise, project management support, or construction and installation services, our team is here to help.

Fill Out Our Contact Form to get started and let us know how we can assist you in achieving your project goals. We look forward to partnering with you to deliver reliable, efficient, and innovative power solutions.