• Reactive Power Services

  • Reactive Power describes the background energy movement in an Alternating Current (AC) system arising from the production of electric and magnetic fields. Devices which store energy by virtue of a magnetic field produced by a flow of current are said to absorb reactive power; those which store energy by virtue of electric fields are said to generate reactive power.

    The flows of Reactive Power on the system will affect Voltage levels. Unlike system frequency, which is consistent across the network, voltages experienced at points across the system form a 'voltage profile', which is uniquely related to the prevailing real and reactive power supply and demand. National Grid must manage voltage levels on a local level to meet the varying needs of the system. Without the appropriate injections of reactive power at correct locations, the voltage profile of the transmission system will exceed statutory planning and operational limits. National Grid utilises the below services in order to manage voltage levels.

  • Balancing services Obligatory Reactive Power Service (ORPS)

    The Obligatory Reactive Power Service is the provision of mandatory varying Reactive Power output.

  • Balancing services Enhanced Reactive Power Services (ERPS)

    The Enhanced Reactive Power Service is the provision of voltage support that which exceeds the minimum technical requirement of the Obligatory Reactive Power Service. 

  • Balancing services Market Tender

    The Enhanced Reactive Power Service is procured via a Market Tender. Follow this link for more information on how to participate and to view further information.

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      Title:  Reactive Utilisation Info
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      Title:  Aggregation of Reactive Power
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