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Better Lighting for Less Cost

“Executives at Hackney Council are delighted to have saved more than £41,000, provided better lighting for residents and reduced overall CO2 emissions”

 

Overview

The aim of the original project was to provide improved lighting for residents of two multipleresidency social housing high rise apartments. Not only would this lighting prove to be more reliable for householders because it would require less ongoing maintenance, but it would also save the council money in line with the needs of LA’s following recent government funding cuts, alongside assisting to achieve council’s ‘emissions reduction’ targets.

  • Saved Hackney Council a total of £41,573.22
  • 3 years Return on Investment
  • Annual energy costs reduced to £2,796.39
  • Warranty of 5 years
  • CO2 emissions reduced from 144.23 to 71.91 tonnes

 

Brief

Ledus were tasked to supply and install 194 LED fittings in two blocks of flats Exbury and Scotney house both situated in Hackney area. Both properties entailed maisonette style apartments situated across 3 levels and were built during late 60’s. The properties were occupied by residents of all ages, however everyone’s expectation was a brighter communal area lighting. The project was to include both internal lighting for all three levels throughout communal areas and external lighting in both blocks.

In order to fulfill Hackney Council’s guidelines, it was necessary for all contractors working on the project to be qualified under the CHAS (Contractors Health and Safety) scheme. Ledus had to ensure that our site manager had an SMSTS certificate, those operating the mobile elevating work platforms had a MEWP (IPA) certificate and that every construction worker had a CSCS certificate. This was achieved by outsourcing the contracting element of the project.

Ongoing requirements were recorded via a RAMS (Risk Assessment & Method Statement). This covered such categories as working hours, emergency procedures, qualifications, protective equipment, safety, hazard management etc.

Other stipulations under RAMS included clearing of the working area at the end of every day, erecting the correct signage and adhering to times when the power should be turned off. Waste had to be removed and disposed of via the council’s own WEEE directive.

The actual installation works took around 3.5 weeks with few additional weeks for testing and amendments, however our team’s work was mainly dependent on our contractor’s work, as the sites had ongoing heating and protective mesh installation works which had to be aligned with our electrical engineers. Both sites gave great learning experience and required thinking ‘out-side of the box’ when British Standard compliant emergency lighting solutions had to be provided in locations which had only ever partially met the required standards. Ledus had to ensure that our supplied fittings were both economical, yet able to achieve the required brightness lux level between fittings in both standard and emergency modes, despite not being permitted to remove or amend the existing metal conduit wiring. As a result, both the professional LED lighting products and aligned teamwork performing a like-for-like replacement, managed to meet all the client’s requirements.

 

Comparison of Existing CFL vs New LED Lighting

Old CFL (Compact Fluorescent Light) New LED Lighting
Low brightness lux level in standard and emergency modes not achieving British Standards Higher brightness lux level in standard and emergency modes achieving British Standards
Emergency light failure – failed partially maintained fittings Newer generation emergency long-life battery packs
Increased potential crime activity – low light levels Potentially lower crime activity and safer environment - up-to-standard brightness levels
Fitting tamper and vandalism – old and brittle fittings easier to tamper and damage low durability rate Vandal proof fittings in carbon and metal enclosure with guaranteed IK10 durability rate
Significant amount of faulty bulbs – higher bulb failure rate and lower lifespan hours averaging 10,000 hours Lower failure rate – guaranteed 50,000 hour lifespan where 2 out of 1000 fail
High energy costs – higher wattage fittings Lower energy costs – on average 50%
High maintenance costs – regular maintenance call-outs required Full service and maintenance covered for a warranty period of 5 years
 Higher CO2 carbon emissions – old compact fluorescent technology Lower CO2 (Carbon Dioxide) emissions - by at least 50%

 

 Results

 Before After
Scotney and Exbury before LED upgrade Scotney and Exbury after LED Upgrade

 

Ledus saved Hackney Council a total of £41,573.22 and provide them with a sound 3 years Return on Investment

Savings were achieved by replacing 194 ‘like-for-like’ existing fittings. The old CFL (Compact Fluorescent Light) fittings required £5,608.20 for annual energy costs and £4,451.86 for maintenance and replacement. After the new LED fittings were fitted the annual energy costs reduced to £2,796.39 and there were no costs for replacement or maintenance as each fitting has 50,000-hour lifespan and a warranty of 5 years.

According to the estimated LED fitting lifespan of 5.72 years the replacement system (energy plus maintenance) would cost Hackney Council just £16,005.00 compared to the old CFL fittings which would have resulted in a much higher cost totalling £57,578.22.

The new LED fittings mean the council will only have to disclose CO2 emissions of 71.91 tonnes for the two buildings, whereas the old luminaries would have resulted in 144.23 tonnes.

Residents were delighted with the new luminaires which were 40% per cent brighter than previously. This not only enhanced the interior of the buildings, but also meant they felt safer when entering and leaving the building.

 

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