Savings Calculator

The Savings Calculator has been designed to calculate the potential benefits of a Low Energy Design Ltd lighting system when compared to existing lighting systems. For additional help on what to enter into each of the necessary fields use the "Savings Help".

The Savings Calculator has been designed to calculate the potential benefits of a Low Energy Design Ltd lighting system when compared to existing lighting systems. For additional help on what to enter into each of the necessary fields use the "Savings Help".

Savings Help

EXISTING LIGHTING SYSTEM
|

LOW ENERGY DESIGNS LIGHTING SYSTEMS

NUMBER OF LAMPS
|

WATTAGE OF LAMP

Lighting Comparison Guide.
|

Lighting Comparison Guide.

Combined Circuit kWatts of Lamps
|

kW hour
|

Burn hours per day
|

Burn days per week
|

Burn weeks per year
|
 

Dimming & Auto Light Levelling %

    
|
 

Average cost per kW/hour

(£)
|
(£)
 

TOTAL Used kWh Per Year
kWh
|
kWh

TOTAL TONS CO2 Generated Per Year
tons
|
tons
 

TOTAL COST OF REPLACEMENT LIGHT

  

NEW LED LIGHT INVESTMENT

  

PAYBACK PERIOD

  
Years

Cost After ECA Claimed

  

ECA funding (Payback against Corportation Tax)

  
%

Years
 
     
     
     
     

Lighting Comparison Guide

Power of Existing LightIndoor/OutdoorLow Energy Designs ReplacementPower RatingProduct Code
1,000 wattsIndoorSunRAY 20200 wattsSR20
OutdoorSunRAY 20 - External200 wattsSR20e
750 wattsIndoorSunRAY 20200 wattsSR20
OutdoorSunRAY - External200 wattsSR20e
500 wattsIndoorSunRAY 20200 wattsSR20
OutdoorSunRAY 10 - External100 wattsSR10e
400 wattsIndoorSunRAY 20200 wattsSR20
SunRAY 16160 wattsSR16
SunRAY 10100 wattsSR10
OutdoorSunRAY 10 - External100 wattsSR10e
SunBURST 880 wattsSB8
350 wattsIndoorSunRAY 20200 wattsSR20
SunRAY 16160 wattsSR16
SunRAY 10100 wattsSR10
OutdoorSunRAY 10 - External100 wattsSR10e
SunBURST 880 wattsSB8
250 wattsIndoorSunRAY 16160 wattsSR16
SunRAY 10100 wattsSR10
OutdoorSunRAY 10 - External100 wattsSR10e
SunBURST 880 wattsSB8
200 wattsIndoorSunRAY 10100 wattsSR10
OutdoorSunRAY 10 - External100 wattsSR10e
SunBURST 880 wattsSB8
150 wattsIndoorSunRAY 10100 wattsSR10
SunRAY 880 wattsSR8
OutdoorSunBURST 880 wattsSB8
SunBURST 660 wattsSB6
100 wattsIndoorSunRAY 880 wattsSR8
SunRAY 660 wattsSR6
OutdoorSunBURST 660 wattsSB6
70 watts <IndoorSunRAY 660 wattsSR6
OutdoorSunBURST 440 wattsSB4
Ceiling Tile Panel 600 x 600IndoorSkyLIGHT40 wattsSKY66
Ceiling Tile Panel 1200 x 300IndoorSkyLIGHT 12340 - 50 wattsSKY123
Ceiling Tile Panel 1200 x 600IndoorSkyLIGHT 12345 - 60 wattsSKY126
Street LightsVarious TypesSunFIRE / SunBURST PRO25 - 120 wattsSF5/7 - SBPRO6/8

Savings Calculator

Savings Calculator Help

The Savings Calculator has been designed to calculate the potential benefits of a Low Energy Design Ltd lighting system when compared to existing lighting systems.

 

Enter the appropriate values into the white fields on the form below and “Calculate Savings”. The dark gray fields are automatically generated.

NUMBER OF LAMPS: Existing number of lamps in the current system. This can be split over two columns if more than one type of lamp is used.

WATTAGE OF LAMP: Wattage rating of each lamp in the current system. If multiple values, an average can be used.

BURN HOURS PER DAY: Hours the system is on per day.

BURN DAYS PER WEEK: Days the system is on per week.

BURN WEEKS PER YEAR: Weeks the system is on per year.

DIMMING & AUTO LIGHT LEVELLING%: Applies to Low Energy Designs Ltd Lighting Systems.

COMBINED FIXTURE SERVICING COST: Cost per lamp per year for servicing.

AVERAGE COST PER kW/HOUR: Cost of electricity per kW Hour.

 
Calculated figures are for illustration only and more accurate figures can be given on request.