The Home Depot Upgrades its Corporate Building Prototype

The Home Depot Upgrades Its Corporate Building Prototype-Free PDF

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BUILDING TECHNOLOGIES OFFICE, Left At The Home Depot store in Lodi California increasing the number of skylights to improve daylighting and customer experience. was determined to be cost effective Skylights from the Lodi store are shown at roof top level Right In The Home Depot store the. checkout area is the focus of many of the skylights Daylighting sensors adjust the lighting level from 100 to 50 or 0 In this photo the. 0 lighting level is active where the overhead lights in the upper left are completely off. The stores have large entrances for customer flow with direct uses very little natural gas and spends approximately 60 times. access to the store and for loading and unloading materials more on electricity than natural gas This discrepancy in utility. Heating ventilation and air conditioning HVAC is handled expenses compelled the CBP team to focus on EEMs that. by a roof top unit system with an energy management system saved electricity Stores in other climates will consider the. cost effectiveness of the full package of EEMs and additional. A Home Depot store open in Lodi California is the first store envelope measures will be implemented. built using the new prototype design and is the most energy. efficient Home Depot store in the country EEMs that save natural gas were noted for other regions but. typically did not meet the ROI criteria in this specific location. The Home Depot and the design team worked from the onset Using the Trane Trace energy model the team analyzed each. of the program to apply the CBP performance standard to its EEM to enable The Home Depot to evaluate the ROI for each. national portfolio of buildings and evaluated energy efficiency individual measure The design team used this information to. measures EEMs for implementation in all future buildings The select the final EEM list for the Lodi store which resulted in. biggest challenge was achieving the high performance standard in the greatest energy savings compared to the baseline prototype. the mild climate chosen for this specific project while keeping project costs within the corporate economic targets. Decision Criteria Policy, At The Home Depot energy efficiency measures EEMs must The Home Depot wants to reduce energy consumption across all. meet strict return on investment ROI requirements to be stores by 20 by the year 2015 In 2004 The Home Depot stores. implemented in a new building in the United States used approximately 25 kWh per square foot. By 2010 this was down to 21 kWh per square foot1 In store. Measures with an ROI of less than 2 years are policies provide additional energy and environmental benefits. implemented directly, 1 6 million pounds of compact fluorescent bulbs recycled. Measures with an ROI of 2 5 years are carefully evaluated for consumers. Measures with an ROI of more than 5 years are A consumer education program guides customers to. considered if the implementation cost is relatively low environmentally friendly products. The Home Depot corporate energy team consistently looks for. Economic cost effective energy measures that can be incorporated into. stores They often experiment with new measures to determine. The EEM selection process for The Home Depot store in Lodi. impact to customers and to evaluate the actual cost savings. California was different from the EEM selection process. associated with the EEMs This experimentation benefited the. in other areas of the country because of the very temperate. Lodi store by allowing the design team to test measures in other. climate in Lodi In these mild temperatures the typical store. stores prior to implementation,DEPARTMENT OF ENERGY 2. Energy Efficiency Measures, The CBP team originally proposed more than 50 EEMs that would benefit different regions and store types across the country The energy savings from the measures.
follow in the table While many of the EEMs shown were not selected for the Lodi store because of the ROI in the mild climate many particularly envelope. improvements will be cost effective when the prototype is applied nationally and will be implemented then The EEMs are presented ranked by expected annual savings. Expected Annual Saving Expected Cost Expected,Implemented in Will Consider for. of Conserved Simple Payback, EEM This Project Future Projects kWh yr1 yr2 Energy kWh3 yr. Envelope 7 of Whole Building Savings, Reduced building height by 4 feet Yes Yes 231 000 24 000 Negative first cost Immediate. Increased roof insulation No Yes NA 1 200 1 85 40, Reduced air infiltration at entrances Yes Yes Benefits captured in package of measures. Lighting 24 of Whole Building Savings, Reduced lighting power density on sales floor Yes Yes 494 000 62 000 0 00 Immediate.
Reduced exterior lighting power density Yes Yes 76 000 9 600 0 02 1. Used daylighting increased number of skylights,Yes Yes 40 000 5 000 0 32 12. and 3 phase lighting, Used light emitting diode lighting in retail display racks Yes Yes 25 000 3 200. Installed occupancy sensors and controls Yes Yes 20 000 2 500 0 01 1. Installed light emitting diode lighting in offices and. Yes Yes 11 000 1 400 0 10 4,sensors and controls, Reduced lighting levels further during non customer. No No Measure determined possible safety issue,operation times stocking and employee times. HVAC 10 of Whole Building Savings, Installed high performance roof top units Yes Yes NA 4 600 Negative first cost Immediate.
BUILDING TECHNOLOGIES OFFICE,Adjusted HVAC fan energy Yes Yes Evaluating. Separated lumber area allows lower temperature, No No Measure determined not feasible due to operational constraints vs energy savings. setpoint in section of store,DEPARTMENT OF ENERGY, Adjusted HVAC operation schedules and setpoints Yes Yes Evaluating No first cost Immediate. Plug Loads Miscellaneous 1 of Whole Building Savings. Installed quick battery charging stations Yes Yes NA 1 800 0 02 1. EEM is dependent on climate, kWh year energy savings per measure were approximated using several methods including metered performance at existing stores simulation software and simple calculations. The performance of the whole package of selected EEMs in the building is greater than the sum of the individual measures shown. Annual savings based on estimates from the design team and measured performance tested by the design team in other stores. Meier 1984,BUILDING TECHNOLOGIES OFFICE,Energy Use Intensities By End Use.
The CBP team used Trane Trace and monitored data from other Model 1 Code Baseline. buildings in the company portfolio The team evaluated several. The first model represented the prescriptive specifications. EEMs for total energy savings in the building Other EEMs. of ASHRAE 90 1 2007 The baseline building had an, like reduced lighting density in sales areas were tested in other. annual energy use intensity EUI of 77 kilo British thermal. stores around the country and the change in energy consumption. units kBtu square foot ft2, was measured to verify possible savings This approach also. allowed the team to ensure the EEMs would support branding. and marketing criteria Model 2 Prototype Design, Some recommended EEMs including additional lighting and The second model represented a building designed and. temperature operational changes were eliminated because operated according to The Home Depot s original design. current operations are already at a reduced level In other cases and had an annual EUI of approximately 75 kBtu ft2. such as HVAC the business case was assessed by modeling the. energy performance and calculating capital costs,Model 3 Final Design. To assess whole building savings three different energy models The third version incorporated the EEMs included. were created Model 1 was the code baseline model Model 2 in the design This model had an annual EUI of about. represented a Home Depot store in Sacramento California built 45 kBtu ft2 and an annual energy savings of 42 over. to the standard corporate building prototype Model 3 included ASHRAE 90 1 2007. all of the selected EEMs for the Lodi store Model 3 was also. used to calculate possible savings in other locations to verify the. revised prototype will achieve energy savings of more than 50. in most climates, Comparing Estimated EUI of Code Baseline Prototype Design and Final Design Models.
3 SAVINGS Interior Lighting,70 Heating Electric,60 Heating Gas. Annual EUI kBtu ft2,50 42 SAVINGS Cooling,Plug Loads. Code Baseline Prototype Design Final Design,4 DEPARTMENT OF ENERGY. BUILDING TECHNOLOGIES OFFICE, Left Lighting display area when no customer is present Right Lighting display area when customer is present Motion sensors activate the. display lighting in this aisle during the time a nearby shopper is browsing. Estimated End Use Energy Savings from Implemented EEMs by End Use versus Code Baseline. Electricity End Use Category Natural Gas End Use Category. Heating 1 400 therms,Interior Lighting 584 000 kWh.
Natural Gas Total 1 400 therms,Heating 3 700 kWh,Cooling 99 000 kWh. Fans 58 000 kWh,Plug Loads 272 000 kWh,Electricity Total 1 017 000 kWh. Estimated Annual Energy Use and Percentage Savings by End Use. Code Baseline Prototype Design Final Design,Annual EUI Annual EUI Annual EUI Percent Savings. End Use Category kBtu ft2 kBtu ft2 kBtu ft2 Over Baseline. Interior Lighting 38 9 38 8 19 7 49,Heating electric 0 6 0 4 0 4 22. Heating gas 2 2 2 6 3 5 61,Cooling 6 7 6 1 3 4 49,Fans 6 1 4 3 4 2 31.
Plug Loads 22 5 22 5 13 5 40,Total 77 0 74 7 44 7 42. DEPARTMENT OF ENERGY 5,BUILDING TECHNOLOGIES OFFICE. Lessons Learned, The CBP project at the Lodi Home Depot store provided The team found that when the heating energy was considered. valuable insights that may be of help to other design teams for the four locations across the country the savings for heating. energy would be much larger in the other areas compared to. Test the EEMs Lodi more than 3 times in Hartford and more than 2 times in. Baltimore In these locations the package of EEMs considered. The design team took a proactive approach to testing the would be well over the 50 target for the CBP Based on this. measures in existing stores when possible The light emitting analysis The Home Depot has incorporated the increased roof. diode in rack lighting was installed in an existing store to and wall insulation in the portfolio prototype and will roll these. evaluate the impact to customers and sales Many of the changes into future stores in other climate zones. measures chosen for the Lodi store will serve as the test case. for future implementation One example is the motion sensor Maximize Team Communications. system installed for the three aisles of display lighting fixtures. This section of the store typically has a dedicated roof top air The Home Depot design team was composed of PNNL WD. conditioning unit to handle the heat load from hundreds of lights Partners and McKinstry Industries and included many of the. operating at all times In the Lodi store the aisles have motion same groups that would have been involved in construction of a. sensors that turn the display lighting fixtures on only when typical non CBP store This team s existing integration made. a customer is in the aisle shopping This EEM is expected to it easier for the parties involved to communicate The design. significantly reduce the load required for the roof top HVAC in team s knowledge of standard Home Depot design criteria and. addition to the direct energy savings from the lighting ROI requirements made selection of EEMs much smoother as. the project progressed,See the Big Picture, Lodi s moderate climate made many of the proposed envelope. EEMs less cost effective than they would be in other parts of. The Lodi store has become our showcase, the country Recognizing that the savings might be even greater.
when considered across the full portfolio the CBP team evaluated for energy efficiency and a great test bed. the performance of the proposed energy measures at locations of energy performance for the company. in Baltimore Charlotte and Hartford to quantify the value of. changing these measures in the portfolio prototype store David Oshinski. Director of Construction at The Home Depot,References and Additional Information. ASHRAE 2011 50 Advanced Energy Design Guide for Medium to Big Box Retail Buildings American Society of Heating Refrigerating and Air Conditioning. Engineers Atlanta Georgia Available at http www ashrae org standards research technology advanced energy design guides 50 percent aedg free download. Meier A K 1984 The Cost of Conserved Energy as an Investment Statistic ESL IE 84 04 109 Lawrence Berkeley Laboratory Available at. http repository tamu edu bitstream handle 1969 1 94751 ESL IE 84 04 109 pdf sequence 1. Shoemaker J 2010 Home Depot s Sustainable Efforts Reduce Energy Consumption in US and Canadian Stores Emerging Energy Available at. http www energyboom com emerging home depot E2 80 99s sustainable efforts reduce energy consumption us and canadian stores. WD Partners 2011 Commercial Building Partnership Stage 1 Final Report. eere energy gov,PNNL SA 90234 March 2013, Printed with a renewable source ink on paper containing at least 50 wastepaper including 10 post consumer waste. The Home Depot Upgrades its Corporate Building Prototype building materials home improvement supplies A Home Depot store open in Lodi

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