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IRU WTE high and medium voltage systems


Description of work



Time of completion

Civil engineering
Concrete works

The work involved the design and construction of the WTE plant’s 110 kV connection to Iru substation, and the delivery and implementation of a 110/10 kV 27.5 MW step-up transformer. In addition, 10 kV switchgear with seven bays, three transformers for the plant’s own use and the strong and weak-current connections between all equipment, including the plant’s generator, were designed, delivered and implemented. Ensuring compatibility of Iru’s new and old power plant proved a novel and complicated task.

On 1 July 2021, Merko Ehitus Eesti acquired a stake in Connecto Eesti, and the Merko electrical construction business line merged with Connecto. Acting jointly under the Connecto brand makes it possible for us to offer a significantly broader range of services – in addition to the design, construction and maintenance of low, medium and high voltage electricity networks, Connecto also operates in the field of telecommunications and gas networks.

View the works performed by Connecto.

Name of the project:
IRU WTE high and medium voltage systems
Civil engineering
Type of construction:
Power infrastructure
Chief Designer:
Merko Inrfa AS
Description of work:
New building
Peterburi tee 105, Maardu, Harjumaa
Beginning of the project:
Year of completion:

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