Estonia

  • Renovation of the 35kV and 10kV switchgear for the Vändra 110/35/10kV substation

    A new 35/10kV substation was designed and built using the turnkey method. A 20-cell, 10 kV switchgear system and earthing current compensation devices were installed in the new substation building. Airgapped 35kV external switchgear was established next to the building. In addition, the existing access road was rebuilt and at the end of the works, …

  • Renovation of Kuusalu 110kV substation

    The works included the renovation of Kuusalu 110kV substation. The works were handed over to the client at completed form, i.e. “turnkey” method, where all the devices in the project are supplied with the necessary design works, installed, configured and tested. The old switchgear was demolished and there were built a new two-sectioned 110kV outdoor …

  • Connecting Elektrilevi OÜ to Tsirguliina 110kV substation

    One 110kV line cell for connecting Tsirguliina substation to Elektrilevi OÜ, with commercial measurement complex. 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 …

  • Apartment buildings at Paepargi str 43 and 47

    Based on the plans, the energy efficiency of the Paepargi 43 and 47 apartment building is 120 kWh/m², which corresponds to energy class B for residential buildings. The load-bearing structures of the building rest on reinforced concrete pile foundations. The external walls are made from pre-fabricated, triple-layer, sandwich-type panels. The ceilings are made from hollow …

  • Public water supply and sewerage infrastructure in Vaivara village

    Under the contract signed between AS Merko Infra, AS Merko Ehitus Eesti and AS KA VAIKO, Merko ’s task in Vaivara Village, Ida-Viru County involved laying 2.7 km of water pipeline, 2.4 km of downstream sewerage pipeline, 1.3 km of pressurized sewerage pipeline, construction of 4 wastewater pumping stations and a new wastewater treatment plant. …

  • Reconstruction of the switchgear at Sindi 110kV substation

    The Sindi substation’s 110 kV switchgear was renovated using the turnkey method. A 110 kV external switchgear installation with 8 capacity switches were built, connected to overhead lines, two voltage transformers and one OPT along with control, auxiliary and monitoring systems. A new control building was built. The old 110 kV switchgear installation was demolished. …

  • External structures at Noblessner (piping)

    What was once the most important submarine construction facility in tsarist Russia has now become a harbour complex open to both the people and the sea. In cooperation with BLRT, Merko has built a modern living environment and designs a public urban space that has become a popular place for Tallinners and visitors to spend …

  • Reconstruction of Mustla 35(110)/15kV substation

    A new 35/15 kV substation was designed and built on the turnkey principle with the prospect of a transition to 110 kV supply voltage. The new constructed substation building was installed with a 16-section 15 kV distribution device and earth current compensation equipment. In addition, the existing access road was reconstructed, and the existing old …