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UK council slashes street lighting costs with the help of Thorn


  • Derbyshire01
  • Derbyshire02
  • Derbyshire03
  • Derbyshire04
  • Lamp efficacy

    Lamp efficacy

    Ensuring the lamp efficiently converts electricity into light (lm/W).

  • Ballast classification

    Ballast classification

    Controlling the electricity supply to the lamp (Energy Efficiency Index).

  • Luminaire distribution

    Luminaire distribution

    Controlling light emission using optics which bend and shape the light to the correct location.

  • System efficacy

    System efficacy

    Combining optical and thermal control within the luminaire (luminaire lm/W).

  • Presence/absence detection

    Presence/absence detection

    Presence: Lights automatically turn on/off with movement. Absence: Lights automatically turn off and must be manually switched on.

  • Daylight detection

    Daylight detection

    Artificial lighting which responds to the natural light conditions.

  • Constant illuminance

    Constant illuminance

    A function designed to produce correct light levels for the duration of the maintenance period.

  • Task-scene setting

    Task-scene setting

    Allowing the user to set scenes and adapt the lighting to different tasks.

  • Timed off

    Timed off

    Automatic cut-off can be installed to turn all lights off during unoccupied hours.

  • Task lighting

    Task lighting

    Lighting task areas with the correct amount of light.

  • Zoning of lighting

    Zoning of lighting

    Lighting is zoned according to area use.

  • Maintenance schedule

    Maintenance schedule

    Maintenance must be performed in response to product age, performance and environment.

  • Waste light

    Waste light

    Eliminating waste light which does not hit the intended target.

  • Reflectance


    Taking advantage of light which is reflected from the surface within the space.

  • Visible smart metering

    Visible smart metering

    Results of actions can be quickly seen as increased or decreased energy use to encourage responsible energy consumption.

The challenge

Derbyshire County Council is responsible for more than 89,000 street lights. In an effort to reduce its operating costs and meet its CO2 reduction targets, the council wanted to replace the energy-guzzling SON-T lanterns used in residential areas with a more efficient and longer-lasting solution.

The lighting solution

Thorn Lighting won the tender to supply the lighting for the residential roads at various locations in Derbyshire. Thorn’s CiviTEQ luminaire was the ideal solution to fulfil the council’s brief. CiviTEQ is a cost-effective LED road lighting solution that offers the best possible balance between cost of ownership and performance, easily adapting to any installation layout. Its patented R-PEC® optic has been designed to provide safe and efficient light on residential streets and busy roads, with 12 precise light distributions delivering unparalleled versatility. CiviTEQ is also dimmable, unlocking further efficiencies. Its bi-power switch can be used to activate or deactivate dimming on-site.

The result

The new lighting maximises energy savings for Derbyshire and reduces maintenance, whilst also providing high quality illumination and carefully tailored light distribution. Further savings will be made  by dimming the lights in most locations to a maximum of 50% output between midnight and 5am. With electricity prices rising, it is envisaged that the capital investment for the switch to LEDs could be paid back in just over eight years.