Cornell University Energy and Sustainability: ECI Campus Energy Metrics Fiscal Year 2015 Annual Analysis Purpose and Methodology. ECI Campus Summary:

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1 Purpose and Methodology ECI Campus Summary: Starting in the 2011/2012 fiscal year, a yearly energy metrics analysis is being performed. This analysis supports creating Facilities Metrics and evaluation of the overall campus Energy Conservation Initiative (ECI), part of the Administrative Streamlining Program. The purposes of the analysis are: Document/Measure ECI savings on a campus wide basis. The projected usage bar for a building is the weather corrected predicted usage of energy per square foot and is shown together with the actual bar for comparison. The projected usage is created based on a baseline equation that relates past usage before the start of the ECI to past weather using regression analysis. Note that all facilities are not part of the campus for ECI analysis purposes (i.e. new buildings, major renovations, are excluded). Identify central energy plant connected facilities where energy use intensity (EUI) is trending unexpectedly higher compared with pre ECI projected values. EUI turns all energy into one common unit Btu divided by the gross square feet. Those buildings are then targeted for follow up action to determine why the usage is higher than predicted. _EUI _EUI For FY15 Actual EUI is approximately 15% below pre ECI values. Note: Energy Use Intensity (EUI) is expressed in kbtu s (1,000 British Thermal Units) per Gross Square Foot. Energy use represents the delivered energy for electric, steam and chilled water. _COSTS Millions _COSTS FY15 CEP ITHACA CAMPUS KBTU/GSF FY15 CEP ITHACA CAMPUS (Marginal Costs) $14.75 $16.84 $ $5 $10 $15 $ Energy costs are about $ 2.1 million less comparing pre ECI projected versus actuals. Marginal costs are variable fuel and electric costs ($6/klb and $0.07/kWh). Although the trends indicate reductions, actual net decreases in usage are also affected by variability in occupancy, minor renovations, internal loads and weather which cannot be 100% captured in the analysis. Page 1 of 6

2 Purpose and Methodology College/Unit Summary The charts on the following pages provide EUI information by commodity (steam, chilled water and electric) by College/Unit. The analysis at the commodity level uses the gross square footage assigned for each commodity. For example, not as many buildings are connected to the district cooling system compared with those connected to the district steam system. Building space may be occupied by multiple colleges; however, the analysis assigns the energy consumption and dollars to the majority space user for each building. Actual sales in $ in the charts are rounded for ease of use in comparisons, and will vary slightly from true billed costs. Facilities are billed based on metered consumption. There are separate rates for steam, chilled water (cooling) and electric. Actual EUIs are lower than pre ECI EUIs at the College/Unit level. Not all colleges are part of the ECI. For example, the Law School chose not to participate. 5% 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% Under/Over Projected EUI Grand Total The impact of energy conservation projects and continuous commissioning is clearly dramatically reducing usage versus the pre ECI baselines. Actual EUI is approximately 15% below pre ECI values. Page 2 of 6

3 College/Unit Energy Use Intensity (EUI) STEAM EUI (kbtu/gsf): 10.1 million GSF CHILLED WATER EUI (kbtu/gsf): 6.4 million GSF ELECTRIC EUI (kbtu/gsf): 10.3 million GSF S S S Page 3 of 6

4 College/Unit Energy Sales STEAM SALES TOTAL BILLED COST: $ 21,661,000 TOTAL PRE ECI BILLED COST: $ 25,651,000 CHILLED WATER SALES TOTAL BILLED COST: $ 5,729,000 TOTAL PRE ECI BILLED COST: $ 6,897,000 ELECTRIC SALES TOTAL BILLED COST: $ 11,001,000 TOTAL PRE ECI BILLED COST: $ 12,315,000 $83 $101 $132 $247 $224 $362 $294 $335 $417 $584 $515 $546 $545 $630 $614 $747 $1,062 $1,204 $2,518 $2,883 $2,755 $3,134 $3,047 $3,687 $4,886 $4,666 $4,789 $6,306 Thousands $ $2,000 $4,000 $6,000 $8,000 $14 $8 $52 $58 $60 $82 $76 $84 $108 $198 $219 $375 $237 $250 $249 $289 $250 $302 $422 $401 $770 $905 $883 $817 $948 $1,269 $1,530 $1,774 $ Thousands $500 $1,000 $1,500 $2,000 $82 $96 $148 $148 $90 $163 $169 $217 $283 $345 $379 $424 $503 $379 $383 $459 $516 $517 $1,222 $1,347 $1,430 $1,330 $1,612 $1,793 $2,074 $2,365 $2,253 $2,589 Thousands $ $1,000 $2,000 $3,000 Page 4 of 6

5 College/Unit Energy Sales ALL COMMODITIES COST INTENSITY (Billed $ per GSF) Actual Average: $3.7 Pre ECI Average: $4.4 ALL COMMODITIES SALES BILLED COST: $ 38,392,000 PRE ECI BILLED COST: $ 44,863,000 $3.7 $4.4 $274 $468 $2.0 $2.2 $306 $333 $2.1 $3.0 $2.2 $3.5 $2.6 $2.8 $2.6 $2.9 $2.6 $3.0 $2.7 $3.0 $3.1 $5.3 $3.3 $3.5 $3.6 $4.2 $4.7 $5.9 $5.2 $6.0 $6.5 $7.3 $7.2 $8.4 $391 $438 $500 $776 $919 $1,304 $1,144 $1,227 $1,241 $1,382 $1,246 $1,461 $1,639 $1,801 $4,856 $5,469 $5,087 $5,917 $6,122 $7,021 $6,679 $7,101 $7,990 $10,163 $0 $2 $4 $6 $8 $10 $0 $5,000 $10,000 $15,000 Thousands Page 5 of 6

6 College/Unit Energy Sales ALL COMMODITIES CO 2 INTENSITY (kg of CO 2 per GSF) Actual Average: 10.5 Pre ECI Average: 12.1 ALL COMMODITIES CO 2 EMISSIONS (METRIC TONS) TOTAL : 108,000 TOTAL PRE ECI : 124, , ,032 1,091 1,252 1,416 1,990 2,472 3,195 3,207 3,285 3,449 3,969 3,703 4,127 5,125 5,433 13,328 14,717 13,393 15,478 16,921 19,323 18,987 20,451 22,791 27, ,000 20,000 30,000 40,000 Page 6 of 6