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Black Sea Transmission Network
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The Black Sea Transmission Network is a project for electric power transmission from Georgia to Turkey.
 | This article needs to be updated. (May 2023) |
In 2014, Inter RAO started supplying electricity from Russia to the energy system of Georgia for subsequent sale in Turkey. The supplies became possible after the commissioning of the 400 kV Akhaltsikhe-Borçka interstate power transmission line with a direct current insertion connecting the energy systems of Georgia and Turkey.[1][unreliable source?]
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Technical description
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The project foresees a rehabilitation and expansion of the existing transmission system. An overhead transmission line with a total length of 247 kilometres (153 mi) will be built from the existing Gardabani and Zestaponi substations to the new Akhaltsikhe substation situated at 41°42′26″N 43°06′35″E. The line between Gardabani and Akhaltsikhe will be 187 kilometres (116 mi), of which 86 kilometres (53 mi) is a rehabilitation of the existing line and 101 kilometres (63 mi) will be a new line. The line between Zestaponi and Akhaltsikhe is 59 kilometres (37 mi) long, of which 35 kilometres (22 mi) is a rehabilitation of the existing line and 24 kilometres (15 mi) will be a new line. The 500 kV overhead line will be a single-circuit transmission line.[2]
At Akhaltsikhe substation two back-to-back high-voltage direct current stations, each with a capacity of 350 MW will be installed. A 400 kV AC overhead line will connect it with Borçka substation in Turkey. About 35 kilometres (22 mi) of it will run in the territory of Georgia.[2] The first HVDC back-to-back station would be operational in May 2012 and the second one in May 2013. This link will be built by Siemens.[3][4]
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Financing
The project is financed by several European finance institutions. The European Investment Bank and the European Bank for Reconstruction and Development lend €80 million both while the German development bank KfW provides €100 million in the form of a grant (€25 million) and a long-term loan (€75 million, €20 million Development Bank of Austria, Oesterreichische Entwicklungsbank (OeEB) risk participation).[5][6] The project is developed by the Georgian state-owned transmission system operator Energotrans.[3][4]
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