Wm\ ENERGY STAR ENERGY STAR® PortfolioManager™ DataTrends Energy Use in Retail Stores Retail Stores Using Portfolio Manager 41,402 Properties 2.2 Billion ft2 Average ENERGY STAR Score The U,S, Environmental Protection Agency's (EPA) ENERGY STAR Portfolio Manager is changing the way organizations track and manage energy, Because of this widespread market adoption, EPA has prepared the DataTrends series to examine benchmarking and trends in energy and water consumption in Portfolio Manager. To learn more, visit www.energystar.gov/DataT rends Benchmarking by State Number of Retail Buildings What is a typical operating profile? Energy use intensity (EUI) ranges from less than 100 to more than 800 kBtu/ft2 across all retail buildings, with those at the 95th percentile using more than 3 times the energy of those at the 5th percentile. The distribution has a negative skew, which means the most energy intensive buildings are much further away from the median than the most efficient. Buildings may use more or less energy for many reasons, including variable equipment efficiency and energy management practices, as well as variations in climate and business activities. Up to 200 buildings 201-500 buildings 501-800 buildings 801-1,500 buildings More than 1,500 buildings 6,000 -I „ 5,000 - (ft U) .£ is 4.000 - 3 CO O 3,000 - Im. £ 2,000 ¦ 3 1,000 - 0 Portfolio ManagerMedian = 199 kBtu/ft2 Range of Values , Ik 95th percentile = 343 5th percentile =103 & v Source EUI (kBtu/ft2) The median retail store in Portfolio Manager is approximately 23,000 square feet and operates 91 hours per week. But the typical building use patterns observed in Portfolio Manager vary just as much as energy. As you can see, there are retail stores of all shapes and sizes benchmarking in Portfolio Manager. Building Characteristic 5th percentile Median 95th percentile Square Feet 6,500 23,398 161,783 "OPEN Operating Hours 65 91 100 Workers per 1000 ft2 0.23 0.55 100 pg Cash Registers per 1000 ft2 0.16 0.30 0.65 K /ass® Computers per 1000 ft2 0.08 0.20 0.88 i Vfelk-in Refrigeration Units per 1000 ft2 0.00 0.00 0.09 c Open/Closed Refrigeration Cases per 1000 ft2 0.00 0.01 1.02 Heating Degree Days 786 3,844 6,564 & Cooling Degree Days 280 1,442 3,689 What is Source Energy? Source energy is the amount of raw fuel required to operate your building. In addition to what you use on- site, source energy includes losses from generation, transmission, and distribution of energy. Source energy enables the most complete and equitable energy assessment. Learn more at www.enerqvstar.gov/SourceEnerqv ------- What characteristics affect energy use? How does EPA's ENERGY STAR score vary with energy use? Business activity and climate are often correlated with energy consumption. For example, retail stores that are open longer hours, have more refrigeration/freezer cases per square foot, and/or experience more cooling degree days (CDD) use more energy, on average. The orange trend line in the graphs below is the steepest for hours, meaning hours has a stronger effect on energy than refrigeration cases or CDD. While these trends hold true on average, two buildings with the same hours could have very different energy, as shown by the range in the blue dots. Similar trends can be seen for other indicators of business activity, such as number of workers. -open" Hours 600 500 400 300 200 100 70 90 110 130 Weekly Operating Hours pj Refrigeration Cases EPA's ENERGY STAR score normalizes for the effects of operation. While buildings with lower EUI generally earn higher scores on the 1-100 scale, an individual building's result depends on its business activities. For any given EUI, a range of scores is possible. ENERGY STAR Score Range For any value of EUI, a range of ENERGY STAR scores can be expected v> QL Range represents 10th - 90th percentile values for score Source EUI (kBtu/ft2) Let's look at two retail stores, Store A and Store B. They have the same EUI of 150 kBtu per square foot, and are identical except that Store B is open longer hours and has more open/ closed refrigeration cases per square foot. Because Store B has more intensive activities, it is expected to have a higher EUI than Store A, based on ENERGY STAR scoring models. Since Store B is expected to use more energy, but actually uses the same energy, it earns a higher score. 0.0 0.4 0.8 1.2 1.6 2.0 Open and Closed Refrigeration/Freezer Cases per 1000 ft2 Cooling Degree Days 600 500 ~ :V' •' '• • *¦.< '••*«[>-, * *« i,,: » , *** b '*»*. f : •T. :-eif-..'J Id = 400 o CO 100 * » - if; j f ||j{| y. !.»r * [ b Ijjjj li • ei.' If [li* 2000 3000 4000 Cooling Degree Days 5000 October 2012 Note: Number and floor area of buildings benchmarked includes cumulative data through 2011. Analysis of energy use and business activity includes buildings benchmarked between 2006 and 2012. The data is self reported and has been filtered to exclude outliers, incomplete records, and test facilities. Portfolio Manager is not a randomly selected sample and is not the basis of the ENERGY STAR score. To learn more, visit: www. eneravstar. gov/Data Trends. United States Environmental Protection Agency Hours: 70 Refrigeration Cases: 0 Expected EUI: V 189 > Hours: 90 Refrigeration Cases: 12 ------- |