Lighting Retrofit Energy Analysis
There is a wide variety of retrofit system lighting choices available today and the possible ballast/lamp combinations are nearly unlimited. So, it is sensible to say that that a new lighting system can essentially be custom tailored to accommodate existing conditions and meet system owner goals – both of which may vary widely from situation to situation.
No single retrofit solution will meet all needs. Each must be evaluated based on a combination of the energy savings, which may be achieved, and the light output required to perform the tasks in the area to be retrofitted. Elite Lighting’s team have the knowledge and expertise to guide you to properly upgrade your present lighting system to an energy efficient lighting system that will provide you with a better quality of light.
Sample Analysis
The following is an example of a project Elite Lighting Company completed in a hotel.
| Existing Lighting System | Proposed Lighting System | |
|
Lamps Ballasts Lighting System |
Lamps Ballasts Lighting System |
The Cost of Light
We will show the difference in operation costs for 88 4 lamp troffers, operated 24 hours per day, 7 days per week, with a utility cost of .075 per kilowatt hour.
Existing |
Proposed |
|||||
| Fixture Calculations | ||||||
| WATTS per fixture | 144 |
112 |
||||
| Operating hours per year | X |
8,760 |
X |
8,760 |
||
| WATT hours per year | - |
1,261,440 |
- |
981,120 |
||
| Divide by 1000 | + |
1,000 |
+ |
1,000 |
||
| Total KWH per year | - |
1,261.44 |
- KWH/YR |
981.12 |
||
| Average cost per KWH | X |
0.0750 |
X |
0.0750 |
||
| Annual power cost to operate 1 fixture | $94.61 |
- |
$73.58 |
|||
| Annual power savings per fixture per year | - |
$21.02 |
||||
| Number of fixtures | X |
88 |
||||
| Comparison old to new | $8,325.50 |
$6,475.39 |
||||
| Annual savings (after conversion of all fixtures) |
- |
$1,850.11 |