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SAPEI, is a high-voltage direct current power transmission system that connects Sardinia with the Italian mainland. The submarine cable from Fiume Santo to Latina runs at below sea level in the Tyrrhenian Sea. It is the deepest submarine power cable in the world. The cable is owned and operated by Terna.

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SAPEI, is a high-voltage direct current power transmission system that connects Sardinia with the Italian mainland. The submarine cable from Fiume Santo to Latina runs at below sea level in the Tyrrhenian Sea. It is the deepest submarine power cable in the world. The cable is owned and operated by Terna.

== History == The project was launched in 2006. Scientific surveys and studies of the sea floor began soon after. The first submarine cable as also onshore cables was laid in 2008 and the first voltage tests were conducted. In 2009, the converter stations in Latina and Fiume Santo entered into operation. Laying of the second submarine cable was scheduled for the end of 2010. The submarine cable-laying activity was being carried out by the Cable Lay Vessel (CLV) Giulio Verne owned and operated by Prysmian Group. The cable was inaugurated on 17 March 2011.

Excerpted from Wikipedia’s “SAPEI” article, available under the CC BY-SA 4.0 licence.

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