Nexans starts Majorca-Valencia interconnector submarine cable laying
Published: Jan 28, 2011 - http://www.powergenworldwide.com
French cable manufacturer Nexans began laying on 27 January the second of three submarine cables forming part a 400 MW, 250 kV DC interconnector between the Balearic Islands and the Spanish mainland.
The Skagerrak, the Norwegian ship owned by Nexans, set sail from Santa Ponsa in Majorca and is scheduled to arrive at Sagunto near Valencia in about three weeks. The laying of the first cable, made by Italian manufacturer Prysmian, which commenced on 13 January, will conclude this weekend in Sagunto.
The interconnection between the Balearic Islands and the Peninsula, named the Romulus project carries a total investment of EUR375m ($515m), of which EUR275m corresponds to the supply and installation of cables and the rest to build the converter stations of Morvedre (Sagunto) and Santa Ponsa, which are nearing completion.
The connection, which will be completed in the first half of this year, will consist of three cables: two 250 kV DC cable and a return cable, jointly manufactured by both Nexans and Prysmian. Commissioning is due by the end of 2011.
The second cable, which weighs 6850 tons and was manufactured by Nexans in Japan, covers a distance of 237 km and will run at a maximum depth of 1485 metres.
The interconnection between the Peninsula and Balearic Islands is the second longest after joining Norway and the Netherlands (580 km) and the second deepest, behind which connect Sardinia with Italy (1600 metres).
The connection will have a capacity of 400 MW, which covers 25 per cent of peak demand Mallorca-Menorca system (1050 MW). Despite being a two-way interconnector, the link will "very seldom, if at all" send power from Majorca to Spain in the medium term, says REE.
REE plans to connect Ibiza Mallorca with cables to be installed in 2013 and 2015, and will involve an investment of EUR160m.
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