• This project, which includes the construction of four new substation bays, will increase the security of the electricity system

Red Eléctrica de España has requested prior administrative approval, administrative authorisation for construction and declaration of public utility for the enlargement of the existing 66 kilovolts (kV) Muelle Grande electricity substation in the port of ‘La Luz' and of 'Las Palmas’.

The improvement in the 66 kV Muelle Grande substation represents an investment of 3.3 million euros and increases the transformer capacity of one of the main transmission hubs of Las Palmas de Gran Canaria, a city which concentrates a high level of economic and business activity, and that also supplies part of the port and industrial electricity demand.

The enlargement was approved by the Cabinet of Ministers on 6 June, 2014, together with another series of actions to be carried out on the transmission grid of the island of Gran Canaria, in order to increase the security and reliability of the electricity system and be able to handle new demand.

The substation where the enlargement is being carried out currently has one 66 kV switchyard – AIS type (conventional air-insulated technology) – enclosed in a building. The facility has two line bays, which connect it to the Guanarteme and Buenavista substations, and a longitudinal coupling, additionally providing support to two distribution transformers.

Improvement actions to this substation will include the construction of four new substation bays with double busbar configuration - GIS type (Gas Insulated technology) – enclosed in a building. One of the bays will be used to connect to the busar of the current Muelle Grande substation. The second bay will be Buenavista, which will be disconnected from the current substation and will be connected to the new one. In addition, it will have a cross-coupling bay, a support bay for a distribution transformer and sufficient space for two future bays.

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