Cornell University—Ithaca Building Energy Report Fiscal Year 2017 Prepared by: Cornell University Energy & Sustainability Department Humphreys Service Building Ithaca, NY 14850 December 2017 Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Table of Contents Executive Summary: ........................................................................................................................................... 1 Building Metering: ............................................................................................................................................. 3 Campus Space Snapshot: ................................................................................................................................... 4 Steam Consumption ........................................................................................................................................... 5 Electric Consumption ......................................................................................................................................... 6 Chilled Water Consumption ............................................................................................................................... 7 Building Energy Use Intensity ............................................................................................................................ 8 ________________________________________________________________________ Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Executive Summary: ECI efforts continue to lower total building energy Fiscal year 2017 building energy consumption for central energy plant provided commodities (i.e. consumption electric, steam and chilled water) was approximately 4% below budget. Total building TOTAL BLDG ENERGY MMBTU energy consumption was 2,058,000 mmBTU 2,200,000 versus the budgeted value of 2,138,000 mmBTU. Actuals are approximately 3% below the weather corrected budget. Notable factors impacting energy consumption are the following: 1) Energy Conservation Initiative (ECI): On‐going Campus ECI efforts are exceeding expectations 2,100,000 regarding building energy consumption. Correcting for the weather, actual steam consumption is 5% below budgeted consumption. Weather corrected chilled water consumption is 6% below budget. ________________________________________ 2,000,000 BUDGET BUDGET ACTUAL (Weather 2) Mild Winter: Actual heating degree days (an Corrected) engineering heating metric) were 8% below budget. Actuals were 6,525 heating degree days Winter 8% warmer than versus a budget of 7,061. Of particular note is budget February, which was 20% warmer than budgeted. _______________________________________ Heating Degree Days 3) LED Project: The Campus wide LED project was roughly budgeted to reduce electric consumption 9,000 7,771 7,822 8,000 by 10 million kwh. We estimate the actual savings 7,061 as approximately 9 million kwh. 7,000 6,462 6,525 ________________________________________ 6,000 4) Wilson Lab: Wilson Lab usage was 25.7 million 5,000 kwh, 12% total campus usage. Budgeted usage 4,000 was 22 million kwh. 3,000 2,000 1,000 ‐ Budget FY14 FY15 FY16 FY17 FY17 ________________________________________________________________________________ FY17 Building Energy Report Page 1 Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Energy Use Intensity: Energy Use Intensity (kBTU per GSF) for each commodity is below the respective weather corrected projected values. The results demonstrates that efforts to reduce building energy consumption across campus through energy conservation and proper maintenance are effective. Please note (1) cooling energy is the actual energy of the cooling versus the electric energy input to produce the cooling and (2) GSF for each commodity is different. ________________________________________________________________________________________ GSF: 8.7 million GSF FY17 CEP ‐ Ithaca Campus Chilled Water (kBtu/GSF) Actual_EUI 56.7 Budget (Weather 60.7 Corrected) EUI 0 10203040506070 ________________________________________________________________________________________ GSF: 12.8 million GSF FY17 CEP ‐ Ithaca Campus Steam (kBtu/GSF) Actual_EUI 63.9 Budget (Weather 67.6 Corrected) EUI 0 10203040506070 ________________________________________________________________________________________ GSF: 14 million GSF FY17 CEP ‐ Ithaca Campus Electric (kBtu/GSF) Actual_EUI 50.2 Budget EUI 49.5 0 10203040506070 ________________________________________________________________________________ FY17 Building Energy Report Page 2 Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Building Metering: The Cornell Central Energy Plant provides campus heating (steam), electric and cooling (chilled water) to Ithaca campus facilities. These facilities are metered Meter data for all facilities to allow for the recovery of the costs of production, is available online – see procurement, and maintenance from University the facilities info tab at departments and administrative units based on usage for each utility. The meters are “Revenue” grade https://ipp.cornell.edu/bui versus “HVAC” grade. A brief introduction of the lding‐information‐and‐ metering system for each commodity follows: documents Electric meters: Over 200 facility codes are metered. In addition, there are numerous sub‐meters, especially for newer buildings to allow for enhanced usage visibility (i.e. plug load versus lighting). The To meet financial reporting Electric metering system has a circuit report. Circuits deadlines the billing month are verified from the building level up through hierarchical circuits to the main production for consumption data is not meters. Meters can be verified either from a parallel the same as the calendar data logger installed on the service or a revenue grade replacement meter is installed in its place month! Steam meters: Over 150 facilities are metered. The condensate is actually metered because of the difficulty in reliable steam metering. This Steam/Condensate Metering System is verified monthly by a sales to production report. Anomalies are flagged. Suspect units are checked vs their consumption history. Metering units are The number of billing days standardized to two manufacturers to facilitate in the billing month does competition, as well as, to keep simple enough for document record keeping. vary from FY to FY and needs to be considered for Chilled Water meters: Over 100 facilities are metered for chilled water. Chilled Water Metering is verified those doing monthly based by use of a sales to production analysis! report. Anomalies are flagged. Suspect units are checked versus their consumption history. Meters are also checked by a download of meter information to an excel spreadsheet for an initial check for suspect data. ________________________________________________________________________________ FY17 Building Energy Report Page 3 Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Campus Space Snapshot: The amount of space associated with each commodity differs significantly. This is important when performing Since 2007, Cornell has energy use intensity (EUI) analysis which focuses on energy (kBTU) per gross square foot (GSF). The space hierarchy is added over 1 million GSF of Electric GSF > Steam GSF > District Cooling GSF. For FY 2017 new conditioned space, the GSF associated with each commodity is as follows: most lab & research type Commodity GSF connected buildings (approx.) Electric 14,100,000 Steam 12,700,000 District Cooling (i.e. Lake Source Cooling) 9,100,000 GSF History 14.5 We categorize the campus space with each facility assigned a College/Unit. Campus Life (i.e. dorms/campus housing) is 14 the largest category with 19% of the total GSF. The College Millions of Information Science (i.e. Gates Hall) is the smallest at < 13.5 1%. The only major building addition for FY17 is Klarman Hall. The major deduction is GSF associated with the Vet 13 School project. The Gannet Health facility is categorized as a FY18 addition. 12.5 % of 12 College/Unit GSF (1,000s) Total CAMPUS LIFE 2,660 19% 11.5 CALS 2,310 16% ARTS SCIENCES 2,080 15% ADMIN SUPPORT 1,230 9% GSF_2006 GSF_2007 GSF_2008 GSF_2009 GSF_2010 GSF_2011 GSF_2012 GSF_2013 GSF_2014 GSF_2015 GSF_2016 GSF_2017 ENGINEERING 1,180 8% VET SCHOOL 900 6% ATHLETICS PHYSED 670 5% HUMAN ECOLOGY 550 4% PROVOST SPECIAL 540 4% LIBRARIES 490 3% HOTEL ADMIN 350 2% ILR 280 2% ARCH ART PLAN 240 2% LAW SCHOOL 230 2% JOHNSON MBA 150 1% BTI 120 1% INFORMATION SCIENCE 110 1% TOTAL GSF (Rounded) 14,100 100% ________________________________________________________________________________ FY17 Building Energy Report Page 4 Cornell University Building Energy Report FY 2017 ________________________________________________________________________ Steam Consumption: FY 2017 steam well below Energy use for heating is at an all time low (at least since FY 1990). FY 2017 steam consumption was weather adjusted budget. approximately 808,000klbs (830,000 mmBTU). Actuals were 10% below the budgeted value of 890,000 klbs, and well below the weather adjusted Building steam usage is budget value of 845,000 klbs. The steam budget was trending downward based on 7,061 HDD; however, the actual