Case Study:
 
     
Greater Lowell Technical High School
Tyngsboro, Massachusetts
 
     

SUMMARY:

Located in Tyngsboro Massachusetts, Greater Lowell Technical High School educates 2100 students from the surrounding communities of Lowell, Dracut, Tyngsboro & Dunstable. Greater Lowell contacted Northern Energy Services for a lighting upgrade to reduce energy and cost, and to improve the schools light quality. Northern Energy performed a lighting analysis on the school and came to the conclusion that by upgrading their lighting system they would save significantly on cost and energy while improving the quality of lighting at the School. Northern Energy Services installed 5,876 lighting fixtures which increased lighting levels at the school by 30%, while decreasing their energy load. Other benefits of the retrofit include reduced maintenance cost and increased lamp life.

" Northern Energy Services completed a very extensive re-lighting project at Greater Lowell Technical High School. They completed the project on time, within budget and with very little disruption of our daily routines. Their personnel were most professional and courteous. I am extremely pleased to recommend Northern Energy Services." - Jim Foley, Director of Plant Services


 
      Total Estimated (KWH) Reduction per year:
___________________________________________________________________1,120,359
Total Annual Cost Reduction:
___________________________________________________________________60%
Total Estimated Savings per year:
___________________________________________________________________$109,795.00
Total Job Cost:
___________________________________________________________________$780,559.20
 
         
     
   
   
   
Carpentry Technology
 
 
Before
After
 
 
 
 
 
   
   
   
       
 
EXISTING
NEW
 
       
 
(179) 2L4’ 34w T12 Lamps / Mag Ballasts
CONNECTED LOAD (KW): 12.53
ANNUAL KWH USAGE: 52,626

(37) 4L T5 HO ENVIROBRITE
CONNECTED LOAD (KW): 8.66
ANNUAL KWH USAGE: 36,364
 
       
       
  ESTIMATED (KWH) REDUCTION PER YEAR:
________________________________________________________________
16,262
ANNUAL COST REDUCTION:
________________________________________________________________30.90%
 

 

Gymnasium
 
 
Before
After
 
 
 
 
 
   
   
   
       
 
EXISTING
NEW
 
       
 

(36) 400w Metal Halide
CONNECTED LOAD (KW): 16.38
ANNUAL KWH USAGE: 68,796

(36) 4L T5 HO ENVIROBRITE
CONNECTED LOAD (KW): 8.42
ANNUAL KWH USAGE: 35,381

 
       
       
  ESTIMATED (KWH) REDUCTION PER YEAR:
________________________________________________________________
33,415
ANNUAL COST REDUCTION:
________________________________________________________________
48.57%
 

 

Computer Technology
 
 
Before
After
 
 
 
 
 
   
   
   
       
 
EXISTING
NEW
 
       
 
(20) 2L4' 34w T12 Lamps / Mag Ballasts
CONNECTED LOAD (KW): 1,400
ANNUAL KWH USAGE: 5,880


(8) 2L4' 32w T8 Lamps/Electronic Plus Ballast
(4) 1L4' 32w T8 Lamps/Electronic Plus Ballast
(1) Ceiling Mounted Occupancy Sensor
Connected Load (KW): 780
Annual KWH Usage:1872
 
       
       
  ESTIMATED (KWH) REDUCTION PER YEAR:
________________________________________________________________
4,008
ANNUAL COST REDUCTION:
________________________________________________________________
68.16%