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400 Watt Metal Halide (HID)
replaced by
6 Lamp T-8 Fluorescent Highbay
| | 400 Watt Metal Halide
| 6 Lamp T-8 Highbay
| Watts/Fixture | 465 | 214 | | Annual Operating Cost/Fixture
| $203 | $93 | Average
Lumens*
| 15,210 | 18,727 | Annual
Savings/Fixture
| $110 | Installed Cost/Fixture
| $218 | Utility
Rebate (est.)
| $125 | Hours of Operation
| 10 hrs/day @ 6 days/week
| Weekly (hr)
| 60 | Annual (hr)
| 3,120 | Annual Electric Savings %
| 54.0% | | Payback Period (yr) | 2.0 | Return on Investment (ROI)
| 50.3% | Annual Savings for 100 Fixtures
| $10,964 |
*
Although
the initial lumen output of a metal halide
fixture may be quite high, metal halide fixtures are known for their
poor lumen
maintenance. The average 400W metal halide
emits only 65% of its initial lumens by the time it hits mean lamp life
(40% of
total life or 8000 hours) and as low as 40%
of its initial lumens by the end of lamp life. Fluorescent lamps have
superior
lumen maintenance and maintain 90-94% of
their initial lumens through the end of life.
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400
Watt Metal Halide (HID) replaced by LED Highbay
| | 400 Watt Metal Halide
| LED Highbay
| Watts/Fixture | 465 | 160 | | Annual Operating Cost/Fixture
| $203 | $196 | Annual
Savings/Fixture
| $374 | Installed Cost/Fixture
| $1,040 | Utility
Rebate (est.)
| $150 | Hours of Operation
| 24 hrs/day @ 7days/week
| Weekly (hr)
| 168 | Annual (hr)
| 8,760 | Annual Electric Savings %
| 65.6% | | Payback Period (yr) | 2.8 | Return on Investment (ROI)
| 36.0% | Annual Savings for 100 Fixtures
| $37,405 |
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4
Lamp 2x4 T12 Fluorescent Fixture replaced by 2 Lamp 2x4 T8 with Reflector
| | 4 Lamp T12 Fluorescent
| 2 Lamp T8 Retrofit
| Watts/Fixture | 184 | 60 | | Annual Operating Cost/Fixture | $80 | $26 | Annual Savings/Fixture
| $54 | Installed
Cost/Fixture
| $64 | Utility Rebate (est.)
| $20 | Hours of Operation
| 10 hrs/day @ 6 days/week
| Weekly (hr)
| 60 | Annual (hr)
| 3,120 | Annual Electric Savings %
| 67.4% | | Payback Period (yr) | 1.2 | Return on Investment (ROI)
| 84.5% | Annual Savings for 100 Fixtures
| $5,416 |
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90W
Par 38 replaced by 17W Par 38 LED
| | 90W Par 38
| 17W Par 38 LED
| Watts/Fixture | 90 | 17
| | Annual Operating Cost/Fixture | $39 | $7 | Annual Savings/Fixture
| $32 | Installed Cost/Fixture
| $49 | Utility
Rebate (est.)
| $20 | Hours of Operation
| 10 hrs/day @ 6 days/week
| Weekly (hr)
| 60 | Annual (hr)
| 3,120 | Annual Electric Savings %
| 81.1% | | Payback Period (yr) | 1.5 | Return
on Investment (ROI)
| 64.7% | Annual
Savings for 100 Fixtures
| $3,189 |
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4
Lamp 2x4 T12 Fixture replaced by 2x4 LED Fixture | | 4 Lamp T12
| 2x4 LED
| Watts/Fixture | 184 | 44
| | Annual Operating Cost/Fixture | $226 | $54 | Annual Savings/Fixture
| $172 | Installed Cost/Fixture
| $470 | Utility Rebate (est.)
| $0 | Hours of Operation
| 24 hrs/day @ 7 days/week
| Weekly (hr)
| 168 | Annual (hr)
| 8,760 | Annual Electric Savings %
| 76.1% | | Payback Period (yr) | 2.7 | Return on Investment (ROI)
| 36.5% | Annual Savings for 100 Fixtures
| $17,170 |
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