Lamp Replacement |

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Tempe and Phoenix

Energy Benchmarking | Methodology

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Energy Benchmarking | Summary

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Highlights

• Gathered five months of utility bills

• Collected list of equipment in the store

• Observed characteristics of the building• Age

• Size

• Construction Type

• Operating Schedule

• Occupancy

Challenges

• Only able to gather five months of data

Energy Benchmarking | Summary

Kelly Paper Phoenix

• Built in 1996

• Approximately 10,000 sq. feet

• Masonry construction

• 28 tons of HVAC equipment

• (5) 5 ton heat pumps

• (1) 3 ton heat pump

• (452) T-8 32w fluorescent light bulbs

• Operates 11 hrs./day 5 days/wk.

• Also open Saturdays 6 hrs.

• Avg. Occupancy 4/Employees 7/Customers

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Energy Benchmarking | Summary

Kelly Paper Tempe

• Built in 1978

• Approximately 10,700 sq. feet

• Tilt-up construction

• 33.5 tons of HVAC equipment

• (6) 5 ton heat pumps

• (1) 3.5 ton heat pump

• (336) T-8 32w fluorescent light bulbs

• Operates 11 hrs./day 5 days/wk.

• Closed weekends

• Avg. Occupancy 4/Employees 7/Customers

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Energy Benchmarking | Data Tables

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• Five months of data collected from utility invoices

• Averages were calculated in all categories based on data collected

• IFMA standards for energy efficiency state that energy usage should be

between 5 kWh/FT2/Year and 20 kWh/FT2/Year

LocationBilling Period kWh/Month Bill

Charge per kWh kWh/Year

Bldg. Sq. Ft. kWh/FT2/Year

Estimated Annual Cost

Tempe Jun-12 8642 $ 970.59 $ 0.112

Jul-12 10808 $ 1,370.01 $ 0.127

Aug-12 12731 $ 1,627.58 $ 0.128

Sep-12 14560 $ 1,535.25 $ 0.105

Oct-12 10720 $ 1,163.80 $ 0.109

Avg.: 11492.2 $ 1,333.45 $ 0.116 137,906 10,700 12.89 $ 16,022.52

Energy Benchmarking | Data Tables

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• Five months of data collected from utility invoices

• Averages were calculated in all categories based on data collected

• IFMA standards for energy efficiency state that energy usage should be

between 5 kWh/FT2/Year and 20 kWh/FT2/Year

LocationBilling Period kWh/Month Bill Charge per kWh kWh/Year

Bldg. Sq. Ft. kWh/FT2/Year

Estimated Annual Cost

Phoenix Jun-12 16320 $ 2,239.05 $ 0.137

Jul-12 21600 $ 2,640.00 $ 0.122

Aug-12 16240 $ 2,158.97 $ 0.133

Sep-12 18880 $ 2,182.67 $ 0.116

Oct-12 13360 $ 1,780.39 $ 0.133

Avg.: 17,280 $ 2,200.22 $ 0.128 207,360 10,000 20.74 $ 26,593.12

Energy Benchmarking | Analysis (Lighting)

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Phoenix Tempe

Lighting Fixtures 452 336

Operating Schedule11 hrs./day 5 days/wk. 6 hrs./day 1 day/wk.

11 hrs/day 5 days/wk.

Annual Energy use attributed to lighting kWh/Year (32w bulbs) 44,347 29,805

Average kWh charge $ 0.128 $ 0.116

Annual cost of energy attributed to lighting $ 5,676.37 $ 3,457.33

Use = # Fixtures x Watts x Hours of operation / 1,000

Energy Benchmarking | Analysis (Lighting)

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Phoenix Tempe

Lighting Fixtures 452 336Annual Energy use attributed to lighting kWh/Year (32w bulbs) 44,347 29,805

Average kWh charge $ 0.128 $ 0.116 Annual cost of energy attributed to lighting $ 5,676.37 $ 3,457.33 Annual Energy use attribute to lighting kWh/Year (28w bulbs) 38,803 26,079 Annual cost of energy attributed to lighting (28w bulbs) $ 4,966.82 $ 3,025.16 Yearly savings by switching to 28w bulbs $ 709.55 $ 432.17

Cost of 28w bulbs ($3.22 each) $ 1,455.44 $ 1081.92

Payback period (Calculated in Years) 2.05 2.50

Energy Benchmarking | Recommendations

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• IFMA standards for energy efficiency state that energy usage should be between 5

kWh/FT2/Year and 20 kWh/FT2/Year

• Phoenix is an energy waster, however they are open on Saturdays while all other

locations are closed. Recommend de-lamping and changing all light bulbs from 32w to

28w.

Location Charge per kWh kWh/Year Bldg. Sq. Ft.Estimated Annual Cost kWh/FT2/Year

Phoenix $ 0.128 207,360 10,000 $ 26,593.12 20.74

Energy Benchmarking | Recommendations

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• Recommend de-lamping and changing all light bulbs from 32w to 28w.

LocationCharge per kWh kWh/Year

Bldg. Sq. Ft.

Estimated Annual Cost kWh/FT2/Year HVAC Tons

Tempe $ 0.116 137,906 10,700 $ 16,022.52 12.89 33.5

Lamp Replacement | Expected Benefits

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Recommendations

• Change light bulbs in both locations and de-lamp where possible.

Expected Benefits

• Replacement of bulbs in Phoenix and Tempe will result in annual savings of $709, $432 respectively.

• De-lamping will provide additional savings commensurate with amount of lamps taken out of use.

Lamp Replacement | Results Tracking

• Utility Bill 2014 vs. 2013

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• We anticipated yearly savings to be $ 709 in Phoenix and $ 432 in Tempe. Actual savings was $2,019 in Phoenix and $1,378 in Tempe.

• Cost of the project in Phoenix was $1,455.44 and $1081.92 in Tempe. We were able to achieve an ROI of less than 12 months in both instances.