INUI LED lighting upgrade at Mont Orgueil Castle, Jersey
INUI recently had the pleasure of illuminating Mont Orgueil Castle, a Jersey Heritage site. The castle’s previous external metal halide lighting spotlights were housed in two lighting stations, positioned some 330 metres from the castle to illuminate the west and south sides of the building. The lights were around 15 years old and were proving to be expensive in terms of both energy consumption and lamp maintenance, so upgrading to INUI LED spotlights was the perfect option.
The issue
There were a number of reasons why the previous lighting scheme of 15 1000-watt lamps wasn’t working for Mont Orgueil Castle. Metal halide lamps have a degradation of more than 60% over a two-year period, meaning they needed replacing every two years in order to maintain sufficient lux levels, which was not cost effective. Not helping matters was the environmental conditions at the coastal site location, which the lamps were struggling to cope with. Constant wear and tear on the system components such as the ballasts, capacitors and connection points were all contributing to increased maintenance costs. Not only this, but the lamps were also producing high levels of CO2 emissions.
Ballast showing corrosion due to environmental conditions
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Capacitor with corrosion
Connection point with corrosion
Existing lighting in numbers
Total power usage: 18,000-watt
Running hours: 1,825 hours of power on time per annum
Current CO2 emissions: 14,000kg (14 tonnes)
The solution
With all this in mind, INUI LED set out to increase the castle’s lighting energy efficiency, lower the maintenance costs, reduce current CO2 emissions and improve the visual impact of the castle’s night-time illumination.
9 INUI LED Spot Light’s were selected as replacements for the existing metal halide lamps. These spotlights solved all of the castle’s problems, as well as being able to withstand the coastal environment. The INUI LED Spot Light has a 5-year parts warranty and its citizen chip has LM80 certification for 60,000 hours, ensuring powerful luminosity, lower energy and running costs, reduced CO2 output and reduced maintenance costs.
New lighting in numbers
Total power usage: 10,000-watt
Running hours: 1,825 hours of power on time per annum
Maintenance cost over 5-year warranty period: £0
Annual running cost savings: Around 65% decrease
Total savings over lamp life: £72,600
CO2 reduction per year: 6,930 (6.93 tonnes)
Before images
Readings taken at this location with 9 x 1000 Watts Metal Halide lamps yielded 7 Lux
West elevation with old Metal Halide lamps
West elevation with old Metal Halide lamps
After images
Readings taken at this location with 6 x 1000 Watts INUI LED Spots gave a result of 23 Lux
West elevation with the new INUI LED Spot Lights
West elevation with the new INUI LED Spot Lights
A view of Mont Orgueil Castle approaching Gorey village
The savings
In essence, the new INUI LED external lighting scheme will yield a running cost saving of around 65% less than previous costs. It will incur little, if any, maintenance costs and an annual reduction in CO2 emissions of 6.93 tonnes. Over the lights 60,000 hours lifetime, the overall savings will be greater than £72,600.
If you have any lighting projects that you’d like to discuss - large or small - then please contact us and we would be happy to discuss your LED requirements and offer friendly advice.