How long will the project last?
The project re-commenced in August 2023 and is due for completion by February 2024
Who can I contact if I have a complaint?
Please use the Contact Us page for any questions or complaints.
What street lights are being installed in Saint Lucia?
There are three types of custom LED luminaires being installed in Saint Lucia:
We will be replacing 70W 2000K sodium luminaries with 21W 5000K KLED Street lights KSL02-050-21W
We are adding 2500 new 21W residential street lights across the island
Main Roads and Highways
We will be replacing 250W 2000K sodium luminaries with 75W 5000K KLED Street lights KSL06-050-75W
We will be replacing all 250W 2000K sodium luminaries with 75W 5000K KLED tunnel lights KTL06-050-75W
Will there be any disruption to my local road during installation?
The average time to install a street light is 30 minutes. During this time a work crew may need to restrict access to the small area of road around the street light being replaced. We anticipate minimal disruption but please contact us if there are any issues.
What are the benefits of street lighting to me?
- 70% less electricity consumption
- 30% to 50% more light
- Decreased national CO2 emissions
- Reduced light pollution
Will the project have a negative impact in Birds, Reptiles and other wildlife in Saint Lucia?
At KLED we aim to improve the environment we operate in. Taking care of local fauna and flora. For this reason we have hired world leading experts to asses our designs and plan with the aim of improving the environment in which animals and plants live.
Please download the full report here: Biodiversity Review Report
Preventing light pollution
Will LED street lighting lead to light pollution?
The use of LED solid state technology does not lead to more light pollution provided the lighting system is well designed. A well designed LED street light network reduces glare, focusing the light where it is needed and avoiding lighting areas where less light spillage is beneficial.
How can controls and optics help against the negative effects of public lighting?
Controls such as dusk to dawn sensors can automatically adjust the lighting according to the time of day, reducing energy consumption and reducing the potential negative environmental impacts. Choosing the right optics can reduce spillage and glare.
The impact of colour temperature
What is colour temperature and why is it important?
Colour temperature is measured in Kelvin “K”. It is a mathematical calculation derived from the Spectral Power Distribution of a light source. It covers a wide variety of specific colour combinations as an average. Solid state LED lighting is available with various combinations of Correlated Colour Temperature “CCT” and Colour Rendering Indexes “CRI”. is a way to measure a light source’s distinctive attributes. The colour temperature is defined in degrees Kelvin where a warm yellowish light is around 2700K, moving to neutral day light white at around 4000K, with cool bluish white coming in around 5000K or more. CRI has a typical range or 70 to 100 and can be thought of as the quality of the light emitted. You tend to see 70 in public out door lighting and 90+ in clothing retail. Public dual carriage way lighting design tends to be about the amount of light for a given energy saving Wattage, whereas retail clothing lighting is more about showing beautiful high quality colours than energy saving and the quantum of light.
For example, in many outdoor lighting systems, protecting the public with lighting that promotes alert driving standards and a safe environment may be the highest priority. In those cases, the recommended colour temperature is 4000K and above with a CRI of > 70 with considerations for the space and those in it. Optics play a major part focusing light on the road way and away from trees and bushes along the road side.
Are there efficiency differences between different colour temperatures?
The efficiency difference between cooler and warmer LED colour temperatures is around 10%. A LED chip set at 5500K produces around 10% more light than at 3500K. Solid state LED lighting promotes an energy savings of 70% to 90% compared to incandescent lighting. Energy savings at 3500K may be 80% and 90% at 5500K from the same LED chip set.
What is the right lighting colour temperature for my city?
There is no set lighting colour temperature for a street , dual carriageway or city. The lighting CCT is adapted to suit the location and type of use. Whilst we are designing the lighting system, we look at the specific local conditions and goals for the lighting environment. We combine the lighting expert design with optics choice to ensure the optimal combination of lighting power and atheistic quality.
I heard that color temperature affects the efficiency of street lighting. What are the differences between CCTs?
Color temperature is an important aspect of color appearance related to how “cool” (bluish) or how “warm” (yellowish) nominally white light appears. Correlated Color Temperature or CCT is defined in degrees Kelvin; a warm light is around 2,700K, moving to neutral white at around 4,000K, and to cool white, at 5,000K or more. The energy efficiency differences between cooler and warmer color temperatures are relatively negligible, especially as compared to the significant efficiency gains by transitioning from traditional incandescent to LED lights.
Well designed LED Street Lighting
What exactly does ‘well designed’ lighting mean?
Well designed lighting addresses balance between the quantum of light and the quality of the light for a specific area. We look how how the new lighting system impacts the lighting levels, the environment and the overall colour intensity. We look at the lighting impact on neighbouring properties, flora and fauna. In addition well designed lighting takes into account special requirements such reducing negative environmental impact. Using the right light spectrum, optics and light intensity helps achieve the benefits of LED light whilst mitigating the negative effects of glare.
How can optics and controls help mitigate any negative impacts of public light?
KLED Lighting controls such as dusk-to-dawn sensors automatically dim and turn off the luminaires according to the time of day, reducing energy consumption and potential negative environmental impacts. In addition, our solutions include shields in specific areas to curtail up light and sidelight and most importantly, “optics” to minimize and reduce glare, regardless of the amount of blue light or what colour temperature they deliver.
Is there an industry standard for street lighting?
There are standards set by global and regional standarisation organisations such as CIE, IES, and CEN, which are widely recognised as industry best practice for design, production, and distribution of products. All of the KLED lighting equipment complies with the relevant standards.
LED Street Lighting and the daily bodily rhythm
Do LED public street lights emit more blue light than other sources and does this lead to sleep disruptions?
There should be no harmful effects on sleeping patterns caused by the blue light emitted from LED street lighting. There is nothing different about the blue light emitted from LED street lights than other light sources. What’s more important is the intensity of light at night. Disruptive effect depends heavily on the amount of light, the timing, and duration of light exposure. Research shows that the light levels produced by LED street lighting are too low to affect our sleep behaviour.
Can installing LED street lights lead to daily rhythm disturbances?
There is no evidence that installing properly designed LED lighting with the correct optics effects our natural daily bodily rhythms. LED lighting provides a host of advantages which are nearly all beneficial to all types of living beings. In specialist areas of habitat, ecological experts recommend lower colour temperatures and focussed optics away from nesting sites for example.
By integrating the right colour temperature, in the right place, at the right time, for the right application, LED light can positively impact public safety and the environment while also offering massive energy savings and maintenance. KLED Lighting solutions are carefully designed for local applications taking into account the right optics and light intensity to benefit from the LED advantages whilst mitigating negative effects.
What’s the health impact of blue lights?
Blue light is important to our health and well-being, especially during day-time. Much of the research regarding potential negative health impacts of blue lights are based on intensity and duration of light exposure at night associated with shift work. These levels of exposure are significantly higher than common outdoor lighting applications and cannot be extrapolated to the reduced light level and shorter duration activities associated with street lights.