Energy saving

Do you know that return on investment in lighting may be less than 3 years?

Do you know that up to forty percent from the total costs of power consumption is spent on lighting?
Do you know that by optimizing the illuminating system you may achieve up to 70% of decrease in consumption of power for lighting?
Do you know that LED technology lights may also replace a relatively new illuminating system with fast return on investment?

Consult us where it is suitable to use LED lights. LED lights are not appropriate for all spaces yet.
Unfair companies offer tendentiously proposed projects with distorted results. Be circumspect: some companies compete with each other in data concerning rate of return!
Technical quality of lights is not the same. Unfair companies deliver non-quality LED sources and lights - in case of unresolved temperature management of LED lights, LED life-time is significantly shortened.
Be careful with the choice of a partner for savings in lighting. References, company history, financial background and stability, these are important indicators. It could happen to you that there would be no person to deal with a possible complaint.

Calculation of the rate of return - 1

Description of the space under consideration:

Model corridor with sizes of 20m x 6 m and the height of 3.5m. E.g. part of the communication corridor of a department store.

Input parameters
Required intensity of lighting	300	lx
Electric energy price	2,2	CZK/kWh
Number of hours of operation	12	hour/day

Parameters of lights
Illuminating system	Light (fitting) used + source	Total input power of the light (fitting)		Effect of the light (fitting)		Light output of the light (fitting)		Durability life of the source of light
Original illuminating system	Built-in light equipped with compact fluorescent tubes CF-L 2x26W	56	W	51	%	3 600	lm	18 000	hours
New illuminating system	Built-in light equipped with a LED source 1x49W	53	W	98	%	3 000	lm	50 000	hours

Parameters of the original illuminating system - CF-L
Number of lights	36	pcs
Price of the light	800	CZK
Total price of the system	28 800	CZK
Input power of the light	56	W
Total input power of the system	2 016	W
Price of an exchange of the source of light (1 pc of the light)	220	CZK

Parameters of the new illuminating system - LED
Number of lights	21	pcs
Price of the light	3 375	CZK
Total price of the system	70 875	CZK
Input power of the light	49	W
Total input power of the system	1 029	W
Price of an exchange of the source of light (1 pc of the light)	1 200	CZK

Return on investment in the new system

4,1

years

Description of the space under consideration: 

Storage hall consisting of open space and shelf aisles.
51.4m x 34.3m, height 10m

Input parameters
Required intensity of lighting	150	lx
Electric energy price	2,2	CZK/kWh
Number of hours of operation	12	hour/day

Parameters of lights
Illuminating system	Light (fitting) used + source	Total input power of the light (fitting)		Effect of the light (fitting)		Light flux		Durability life of the source of light
Original illuminating system	Industrial luminaire equipped with metal halide lamp HIT 400W	460	W	53	%	35 000	lm	18 000	hours
New illuminating system	Light KOSSNO LED 4x47W	188	W	89	%	17 380	lm	50 000	hours
New illuminating system	Light KOSSNO LED 2x47W	94	W	89	%	8 690	lm	50 000	hours

Parameters of the original illuminating system - HIT
Number of lights	54	pcs
Price of the light	1 600	CZK
Total price of the system	86 400	CZK
Input power of the light	460	W
Total input power of the system	24 840	W
Price of an exchange of the source of light (1 pc of the source)	600	CZK

Parameters of the new illuminating system - LED
Number of lights 188W - (4x47W)	27	pcs
Price of the light	16 000	CZK
Number of lights 94W - (2x47W)	27	pcs
Price of the light	8 000	CZK
Total price of the system	648 000	CZK
Total input power of the system	7 614	W
Price of an exchange of the source of light (1 pc of the source)	3 000	CZK

Return on investment in the new system

3,2

years