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  • How are Shetland's lights kept on today?

  • Lerwick Power Station (67MW)

    Is the primary source of electricity for the island. It's main engines run mainly on medium and heavy fuel oil. The original engines at the Gremista site were first commissioned in 1953.

    Sullom Voe Terminal Power Station (15MW)

    is a 100MW gas fired power station, which was developed in the 1970's to meet the oil terminal's full electricity needs. In 1994 a connection was established between the power station and the island network to allow the export of up to 15MW of power under a commercial arrangement.

    Burradale wind farm (3.68MW)

    Originally commissioned 2000 and consists of 5 turbines owned by Shetland Aerogenerators. Burradale is one of the most productive wind farms in the world. When the wind is blowing, output from Burradale and smaller renewable generators reduces the consumption of fossil fuels, but it cannot respond to customer demand at all times.

    Northern Isles New Energy Solutions (NINES)

    An innovative project developed by SHEPD in partnership with third parties and approved by Ofgem in November 2011. It aims to increase renewable generation output, reduce reliance on fossil fuels and cut the cost of keeping the lights on in future by lowering the maximum demand on the island network.
    The project includes:

    • A1MW lead acid battery - which stores renewable generation output when there is not enough demand and releases energy at times when it is needed.
    • Smart heating and hot water systems - in 734 homes. By enabling SHEPD to manage the charging period the new systems could reduce winter peak demand by approximately 3MW.
    • A thermal store linked to an electric boiler - to facilitate the expansion of the district heating scheme in Lerwick which is owned and operated by Shetland Heat Energy and Power Ltd (SHEAP)
    • An active network management - system to control the storage and release of energy by the battery and smart heating systems.
    • Between 8 and 14 MW of new renewable generation which could be connected, enabling more of Shetland's natural resources to be harnessed on the islands network.
  • How is the Shetland network balanced?

  • On mainland Great Britain, National Grid has a formal role as 'System operator', which includes balancing supply of generation on the system to meet consumer demand every second of every day. SHEPD currently carries out this function in Shetland - although it is outside our formal role as a Distribution Network Operator. We balance the demand for electricity from homes and businesses by directing Lerwick power station and Sullom Voe terminal power station to vary the amount of electricity they supply in response to changes in customer demand and availability of renewable generation.