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International Internet Magazine. Baltic States news & analytics Wednesday, 23.09.2020, 16:05

Elering starts installation of EUR 9 mln underwater cable between mainland, Muhu

BC, Vilnius, 13.08.2020.Print version
Estonian transmission system operator Elering will this week install a second 110 kilovolt undersea cable between the mainland and the island of Muhu for an investment of approximately 9 mln euros, reported LETA/BNS.

The second cable from the mainland to Muhu, from where high voltage cables run to Saaremaa, the country's biggest island, is aimed to improve the security of supply for residents of Muhu, Saaremaa and the island of Hiiumaa. 

The project is a part of Elering's program for the security of supply of the islands that will see altogether about 30 mln euros invested for that purpose, the company announced on Wednesday.

Elering CEO Taavi Veskimagi said that the program now has entered its second half. 

According to the CEO, next on the table is the construction of the Voikula-Orissaare parallel line in the section on Muhu Island, whereas the construction of a second undersea cable in the strait between Saaremaa and Muhu, as well as several network upgrades on the mainland to ensure both better security of supply for the residents of the islands as well as enable to link up more renewable energy capacities to the network in Western Estonia and on the islands are being planned.     

The CEO described improving the security of supply of the islands as one of the priorities for  Elering, as demonstrated by the letter of intent signed between Elering and the Saaremaa municipality in mid-July. The letter of intent covers, in addition to security of supply, also support for the development of renewable energy, developing of offshore wind farms in conjunction with developing the Baltic Sea energy interconnection plan, and reducing the environmental impact of the energy infrastructure. 

The new undersea cable will run between the substations of Rouste and Tusti and will replace two worn-out 35-kilovolt cables. The total length of the new cable is 11 kilometers, of which the length of the submerged cable, which will be buried 1 to 1.5 meters under the sea bed to minimize the risk of damage, is 9.7 kilometers. 

Together with the high-voltage cable, a fibre-optical communications cable will be installed.

The lifecycle of the new cables is from 50 to 60 years and their capacity is sufficient to handle significant increases in consumption, Elering said.

The agreement on the installation of the cable was signed by Elering with Merko Infra and Connecto Eesti. The cable was manufactured at Prysmian plant in Finland. 

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