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Renovation of Tööstuse 110kV substation


Civil engineering

Energy supply

Concrete works


Description of work




The need to renovate the Tööstuse substation in Tartu was occasioned by the decision of Elektrilevi to change over from the existing 6 kV voltage to 10 kV voltage. The work included the complete decommissioning of the old 110 kV substation and the building of the new substation along with a new control building. A horizontal surface form was set out for the plot, which was originally on a considerable slope, and a retaining wall was put up to stabilise it. The three overhead line towers that had surrounded the substation were dismantled and replaced with a lattice tower to reduce intersections between overhead lines above the prospective road connecting Tähe and Turu street.

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.

Elering AS
Name of the project:
Renovation of Tööstuse 110kV substation
Energy supply
Type of construction:
AS Merko Infra and AS Merko Ehitus Eesti
Description of work:
Tähe 114 h, Tartu
Beginning of the project:
Year of completion:

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