LED Lighting –
An Ongoing Evolution
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Introductions
Greg Smith, President, Lighting Optimizers, USA, CLEP, CEM, LEED AP
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Energy Savings Projects and Lighting Auditing Services
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Over $5,000,000 of Successful Energy Saving Lighting
Projects since 2011
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22 Full-time Associates
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Vendor-neutral
Mechanical and Energy Engineers, Lighting Engineers
In-house design and installation services
Innovative, but practical
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Cutting edge, not bleeding edge
• “The bitterness of poor quality remains long after the sweetness of low
price is forgotten” – Benjamin Franklin
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The Power of Lighting
“Lighting represents roughly 40% of the energy
consumption in the commercial building sector”
- US Dept. of Energy, 2008
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Fastest payback
Low initial investment
Helps drive other energy improvements
Improved facility appearance & comfort
Typical 2-4 year interior fluorescent payback
Typical 6-8 year exterior LED payback
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Identifying Opportunities
 5 or more years since last lighting
upgrade
– Presence of T12 lamps and ballasts
– Presence of T8 32W lamps
– Presence of non-fluorescent High Bays
 Absence of Occupancy Sensors
 Incandescent EXIT Signs
 HID Exterior Lighting
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Light Emitting Diodes (LEDs)
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History of the Technology
• First concept was discovered/created in 1907
by H.J. Round – electroluminescence
• Nick Holonyak of GE (1961)
– First visible spectrum LED (red)
• First used to replace indicator lamps
– TVs, radios, calculators, high tech machines
• High brightness LED (blue & white) in 1994
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Recent Trends
 Quality Improvements
 Market Leaders – Cree, Lithonia, Sylvania
 Trusted Manufacturers offering full LED product
lines
 Quantity Improvements
 Higher Lumen output
 Improved Fixture Efficacy (i.e. lumens per watt)
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Emerging Trends
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Advantages of LED
Advantages
 High efficacy (lumens/Watt)
 No mercury
 Can vary color easily
 Cycling
 Dimming capabilities
 LIFE EXPECTANCY (50,000 + hours)
 Instant Start up time
 No ultraviolet light
 Energy savings
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Potential Disadvantages
 Directional
 Potential slight color variation
Being addressed by major manufacturers
throughout quality control
 Current interior cost, but lowering everyday
 Can have compatibility issues with older dimmer
systems
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Interior Case Study –
Dayton Art Institute
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Strategy
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One for one lamp replacement w/ comparable LED product
Light output from LED lamps only an issue at extremely high
outputs (> 250W incandescent)
Replacement of incandescent lamp system with high
efficiency LED lamps
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Projected Electrical Savings = $33,000
Projected Annual O&M Savings = $1,800
Projected Utility Rebate = $11,240
Simple Payback 5.1 years
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Case Study –
Tecumseh Local Schools
 2012 Retrofit of Exterior Lighting
Systems
- Wall-packs
- Flood lighting
- Parking Lots/Area Lighting
 65% Energy Use Reduction
 7.2 Year Simple Payback
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Thank You