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Best Practices for Lighting Retrofits

LIGHTING BEST PRACTICES FOR $ PROFIT O PLANET PEOPLE POTENTIAL LIGHT ENERGY SAVINGS Keeping the lights on in commercial buildings consumes 37% of all electricity use in the U.S. The low cost/quick-payback nature of lighting upgrades makes lighting retrofits a critical part of any advanced energy retrofit, able to reduce energy requirements by 10-85 percent. 32% PROVIDE OCCUPANCY SENSORS FOR VACANCY CONTROL 13% MANAGE BLINDS FOR LIGHT AND SHADE Use occupancy sensors to automatically turn lights off when closed offices, conference rooms, copy rooms, bathrooms and storage areas are vacated, but let you turn on the lights as needed when daylight is inadequate. Manage your office's venetian blinds to provide abundant natural light and views, while reducing glare and providing shading in summer. 30% 85% HARVEST DAYLIGHT UPGRADE TO LED FIXTURES Use daylight sensors for automatic dimming or on/off control of lighting in perimeter offices spaces to reduce the use of electric light when natural light is sufficient. Replace existing incandescent or fluorescent lights with high performance LED fixtures and add IP network controls and dimming to take advantage of daylight, task control, schedule control, and more. 40% LOWER AMBIENT LIGHT AND PROVIDE TASK LIGHTS Reduce the overhead ambient 65% light levels by 50% to provide gentler light levels for computer based work, meetings and phone conversations, and provide LED task lights to shine brighter light directly on the less frequent paper based tasks. PROVIDE INDIVIDUALLY ADDRESSABLE BALLASTS Install ballasts or controllers that make each fixture individually controllable from your desktop or smart phone, so occupants can select the level they need for different activities, time of day, or work schedules, PRIORITIES GIVEN 9 PROFIT O PLANET PEOPLE Digitally Addressable Controls LED lamps Lower Ambient Add Task Light Buy High Performance Blinds LED Fixtures and Integrated Controls Harvest Manage Existing Blinds Occupancy Sensors Daylight EXAMPLE INITIAL COSTS $190 $196 $2 $542 $630 $480 $900 $130 $ per workstation ENERGY AND FM SAVINGS $ per workstation $40 $64 $18 $30 $96 $104 $165 $68 ENVIRONMENTAL SAVINGS $ associated with energy savings $16 $16 $6 $9 $27 $17 $36 $21 HUMAN SAVINGS $ through productivity & health gains $620 $198 $472 $472 $1,516 $2,490 $2,490 lin. 85 217 167 80 75 70 65 61 55 54 Occupancy Sensors do not affect occupant health or performance so PEOPLE do not change the payback period. 48 41 PAYBACK PERIOD 23 CEBHUB Energy Efficient Buildings Hub Calculations are based on a 15-year lifecycle. The "profit" payback numbers are based on a 100,000 sq. ft. office building with 3-5 floors, an existing 6.8kWh/sq. ft. of annual lighting energy use, and maintenance savings. CALCULATING THE TRIPLE BOTTOM LINE FOR PAYBACK: Re-energizing buildings for the future." A triple bottom line calculation allows us to capture the speed of payback based on three benefits to individuals and society: wwW.EEBHUB.ORG/RESEARCH-DIGEST Profit = savings from lower energy bills and maintenance savings; The "planet" payback numbers are based on the national average price of electricity at $0.10/kwh and CMU estimated environmental costs of electricity - at $0.01/kwh for CO2 emissions; $0.012/kWh for SOx emissions; $0.003/kWh for NOx emissions; $0.001/kWh for Particulates PM10; and $0.004/kWh for water costs. Carnegie Mellon University Planet - savings from reduced environmental impacts; and The "people" payback numbers are based on the assumption of 500 occupants with a national average salary of $45,000 working for 256 days per year, and a host of productivity and health studies that can be found in the final report. People - savings from increased productivity and health.

Best Practices for Lighting Retrofits

shared by Maskar on Oct 02
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Keeping the lights on in commercial buildings consumes 37% of all electricity use in the U.S. The low cost/quick-payback nature of lighting upgrades makes lighting retrofits a critical part of any adv...

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