• Design Service
    Free design service A dedicated, fully qualified, in-house design team is at your service completely free of charge. Providing comprehensive lighting designs bringing designs to life for road, urban, tunnel, high-mast, sports and area lighting schemes. We also have a specialised PFI design and support service.
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  • Cost Calculator
    Cost Calculator The pressures on reducing energy, maintenance costs and operating costs will continue to increase so that climate change objectives can be met. Understanding the total cost of an installation over its whole life is becoming increasingly important as budgets become tighter and long term planning is required. The Total Cost of Ownership Tool from Philips WRTL allows you to compare the complete cost of alternate lighting solutions alongside Stela so that you are able to make informed decisions on long term sustainability.
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“I watched the switch over from existing street lighting to Stela LED and was totally surprised by the uniformity and energy saving readings.” David Lewis

White light

Philips WRTL's ranges of functional and urban lanterns are purposely designed to accept the new white light sources. All major products such as Newcastle, North Tyneside PFI, Staffordshire PFI, Surrey PFI and South Coast PFI incorporated white light as a key requirement.

Surveys of residents in roads where Stela has been installed show that 83% are satisfied with the colour of the LED street light.

At low lighting levels white light produces a response from both types of receptors (rods and cones) in the eye. The brain responds to the signals from the eye and perceives the source as brighter than it otherwise would if white light was not employed. Even though the amount of light is identical, this increase in perceived brightness offers the opportunity to reduce lighting levels when using white light  and therefore save energy.

In addition to energy saving benefits it is also true that people feel safe in an environment where they can perceive colour correctly and distinguish facial features more easily.