Annual energy cost
savings: $62,319
Number of watts
reduced: 79,590
Annual maintenance
savings: $1,516
Case Study – Hospital
Troffer RiteFit – A Retrofit Kit
Hospital Troffer De-Lamp:
- Existing Fixtures: Corridors / Hallways / Rooms
- 3 Lamp Troffer with T12/40w lamps and magnetic ballasts
- Total watts per fixture: 129
- Number of fixtures: 1,137
- Total watts used: 146,673
- Annual maintenance costs: $3,032
Annual energy costs: $114,845
Retrofit Outcome:
- De-lamp 2qty 32w T8 3,000 lumens with electronic high efficiency ballast normal power
- Envirobrite RTR2402T8WNLSS
- Total watts per fixture: 59 watts
- Number of fixtures: 1,137
- Total watts used: 67,083
- Annual maintenance costs: $1,516
New annual energy costs: $52,526
Energy Savings Analysis:
- Most luminaires operating 24 hours. Use 8,700 hours annually for this exercise.
- Watts saved: 79,590
- Energy Costs: $.09 per kWh
Dollars saved: $62,319 annually
This does not include the additional savings through installation of motion sensors and wireless controlled RF devices.
Retrofit Cost:
- Ballast: $16.00
- Lamps: $1.98 x 2 = $3.96
- Cost per kit: $21.95
- Labor Installation cost: $9.70
- Total cost per fixture installed: $51.61
- Total retrofit cost: $58,681
- Maintenance savings: $1,516 annually
- Simple payback: 10 months (this does not factor any rebate or tax deduction provided via the Energy Policy act of 2005. Actual payback period would be less.)
- Carbon footprint reduction is equivalent to removing 11 cars off the road annually.
