Nairn Court

Sutton Housing Society

With changing demographics in the area, Sutton Housing Society provides good quality, affordable rented housing for people with housing needs. These people reside in, or are connected with, the London Borough of Sutton. The association owns 450 properties and just under 300 are dedicated to older people.

The Nairn Court development is a sheltered accommodation block of apartments accommodating, in the main, older people. It is built over three floors with two staircases, communal drying rooms and a passenger lift.

The Problem

  • Reduction of energy consumption
  • Lighting level improvement
  • Control lighting during occupied periods only
  • Undertake the work without upsetting vulnerable residents
  • Carry out work quickly with minimum disruption and noise
  • To eradicate ongoing maintenance costs for the next 5 years.

Having improved light levels, saved us vast wasted energy and on-going maintenance costs; Future Lighting have designed and installed a superb lighting system at a development we manage for the elderly in Sutton. Fantastic feedback given by residents on professionalism of contractors, and the speed and standard of work carried out.”


Natalie Stappers – Sutton Housing Society

BUILDING TYPE

RESIDENTIAL

NUMBER OF DWELLINGS

26

TECHNOLOGY USED

LED & CONTROLS

MONEY SAVED

£1882.00

Future Lighting’s Solution
  • Remove all old technology fluorescent light fittings and remote 8W emergency Bulkheads from the entire communal areas including the rear external façade
  • Replace all luminaries with LED technology bulkheads with combined emergency packs and integral microwave occupancy and LUX Level detection.
  • Replace internal lighting with new LED Combined Emergency
  • Install bulkheads with integral Occupancy Detectors, preventing wasted energy during unoccupied periods
  • Replace all external lights with directional weatherproof LED bulkhead lights with integral Dusk-till-Dawn photocells to control lighting during dusk and dark periods only
  • Supply 5 Years Guarantee documents
Results
  • This upgrade has dramatically improved general light levels by at least 25% and is now showing considerable wasted energy savings and eliminated ongoing maintenance requirements.
  • Please see energy saving analysis summary later in this document.
  • The existing lighting to the rear car park and landscaped areas were standard 25W Fluorescent Bulkheads, without directional diffusers, resulting in 50% of the light output being wasted.
  • All existing fittings were replaced with new directional, vandal-resistant, decorative wall mounted bulkheads that were fit for purpose.
  • These are now saving over 65% of the energy used and have improved light levels dramatically. These fittings have integral dusk-till-dawn sensors and are only switched on throughout the hours of darkness, and will not require any adjustment of settings throughout the year.

CO2 SAVED(T)

7.4

RETURN ON INVESTMENT

44 MONTHS

SUMMARY OF LAMP & FITTINGS
Area / LocationFitting & Lamp TypeWattageNo of Wattage
(per fitting)
Total Wattage
(per fitting)
Amount of
fittings
Total Area
Wattage (used)
Lobby, Stairs & Drying Room28W 2D28134321088
External28W 2D281347238
Recessed Spot601602120
Bin StoreTwin 58W5821331133
TOTALS421579
COST SAVING CALCULATOR
ENERGY / COST SAVING CALCULATORPREPOST
Cost per kWh0.14p0.14p
Watts used (ph)1579602
Kwh’s Used (pA)13,832396
Voltage230230
CO2 Emissions pa (tonnes)7.530.22
ELECTRICITY USED £’s
PREPOST
Hour£0.22£0.08
Day£5.31£0.15
Month£164.47£4.56
Year£1,973.62£55.46
SUMMARY OF COSTS, SAVINGS AND ROI
ItemCostSavings
Installation (parts and materials)£8,912.00
Annual Electricity Saved£1881.10
Annual Maintenance Cost (lighting only)£500.00 EST
Total£8,912.00£2,381.10
ROI: 44 MONTHS
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