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2020 NYStretch Energy Code Commercial Cost Effectiveness Analysis Final Report | Report Number 19-34 | July 2019 NYSERDA’s Promise to New Yorkers: NYSERDA provides resources, expertise, and objective information so New Yorkers can make confident, informed energy decisions. Mission Statement: Advance innovative energy solutions in ways that improve New York’s economy and environment. Vision Statement: Serve as a catalyst – advancing energy innovation, technology, and investment; transforming New York’s economy; and empowering people to choose clean and efficient energy as part of their everyday lives. 2020 NYStretch Energy Code Commercial Cost Effectiveness Analysis Final Report Prepared for: New York State Energy Research and Development Authority Albany, NY Marilyn Dare Senior Project Manager Prepared by: Vidaris, Inc. New York, NY NYSERDA Report 19-34 NYSERDA Contract 137652 July 2019 ii Notice This report was prepared by Vidaris Inc. in the course of performing work contracted for and sponsored by the New York State Energy Research and Development Authority (hereafter “NYSERDA”). The opinions expressed in this report do not necessarily reflect those of NYSERDA or the State of New York, and reference to any specific product, service, process, or method does not constitute an implied or expressed recommendation or endorsement of it. Further, NYSERDA, the State of New York, and the contractor make no warranties or representations, expressed or implied, as to the fitness for particular purpose or merchantability of any product, apparatus, or service, or the usefulness, completeness, or accuracy of any processes, methods, or other information contained, described, disclosed, or referred to in this report. NYSERDA, the State of New York, and the contractor make no representation that the use of any product, apparatus, process, method, or other information will not infringe privately owned rights and will assume no liability for any loss, injury, or damage resulting from, or occurring in connection with, the use of information contained, described, disclosed, or referred to in this report. NYSERDA makes every effort to provide accurate information about copyright owners and related matters in the reports we publish. Contractors are responsible for determining and satisfying copyright or other use restrictions regarding the content of reports that they write, in compliance with NYSERDA’s policies and federal law. If you are the copyright owner and believe a NYSERDA report has not properly attributed your work to you or has used it without permission, please email print@nyserda.ny.gov Information contained in this document, such as web page addresses, are current at the time of publication. Abstract This report summarizes the energy savings and cost-effectiveness analysis of the commercial provisions of the 2020 NYStretch Energy Code of New York State. For this study, cost effectiveness means comparing the annual energy cost and first costs of complying with NYStretch versus the commercial provisions of the 2020 ECCC NYS to determine the incremental cost of design and construction as compared to the annual energy cost savings. NYStretch includes overlays of both the 2018 IECC and ASHRAE 90.1-2016. This analysis is limited to the overlay of ASHRAE 90.1-2016. The report includes the methodology used in the analysis, assumptions, and results at the applicable climate design zones for New York State. iii Keywords Energy code, stretch energy code, cost effectiveness, NYSERDA Table of Contents Notice..................................................................................................................................... ii Abstract ................................................................................................................................. ii Keywords.............................................................................................................................. iii Definitions ............................................................................................................................ iv Summary ............................................................................................................................S-1 Cost Effectiveness Study ............................................................................................... 1 1.1 Background................................................................................................................. 1 1.2 Energy Analysis Results................................................................................................ 2 1.3 Cost-Effectiveness Analysis ........................................................................................... 3 Appendix A. ........................................................................................................................A-1 Appendix B ........................................................................................................................ B-1 Appendix C ........................................................................................................................ C-1 Appendix D. Cost Estimates ............................................................................................. D-1 List of Tables Table 1. Prototypes and New York Climate Zones.................................................................... 1 Table 2. Aggregated Differences in Annual Energy and Annual Energy Cost between ASHRAE 90.1-2016 and 2020 NYStretch ..................................................................... 3 Table 3. Measure Life Assumptions ......................................................................................... 4 Table 4. Life-Cycle Cost Analysis Parameters .......................................................................... 4 Table 5. Energy Savings and Simple Payback for By Building Type and Climate Zone.............. 5 Table 6. Energy Savings and Simple Payback by Building Type ............................................... 6 Table 7. 10 Year Present Values of Energy Cost Savings between ASHRAE 90.1-2016 and NYStretch.............................................................................................................. 7 Table 8. 30 Year Present Values of Energy Cost Savings between ASHRAE 90.1-2016 and NYStretch.............................................................................................................. 8 iv Definitions Climate Zones: The three climate zones of New York State: 4A, 5A, and 6A. For purposes of these analyses, the weather files used are New York City (CZ 4A), Buffalo (CZ 5A), and Watertown (CZ 6A). Prototypes: Prototypes developed by the Department of Energy for modeling purposes for the following building types: Large Office, Stand-alone Retail, Secondary School, Large Hotel, Full-Service Restaurant, Outpatient Healthcare, Warehouse, 10-Story High-Rise Apartment, and 20-Story High- Rise Apartment. The 10- and 20-Story High-Rise Apartment prototypes were developed by PNNL based on New York City building permit data for multifamily buildings for use in the NYStretch Code analysis. 2020 Energy Conservation Construction Code of New York State (2020 ECCC NYS): An energy code based on the 2018 International Energy Conservation Code, published by the International Code Council and subsequently modified by New York State. S-1 Summary With guidance from a 25-member advisory group composed of public and private stakeholders, the New York State Energy Research and Development Authority (NYSERDA) developed the NYStretch Energy Code-2020 (draft dated January 2019) (NYStretch) as a voluntary, locally adoptable stretch energy code. It is intended that NYStretch will overlay the 2020 Energy Conservation Construction Code of New York State (2020 ECCC NYS) resulting in an energy code that is roughly 7% more efficient than the commercial provisions of ASHRAE 90.1-2016. To assist communities in adopting NYStretch, NYSERDA contracted Vidaris to provide a cost- effectiveness analysis of the commercial provisions of NYStretch. For this study, cost effectiveness means comparing the annual energy cost and first costs of complying with NYStretch versus the 2020 ECCC NYS to determine the incremental cost of design and construction as compared to the annual energy cost savings. NYStretch includes overlays of both the 2018 IECC and ASHRAE 90.1-2016. The analysis presented in this report is limited to the overlay of ASHRAE 90.1-2016. The NYStretch overlay for 90.1-2016 includes a new requirement for choosing an additional set of increased efficiency requirements. For this analysis, the option for reduced lighting power was included for all buildings. A summary of results is presented in Tables ES-1 through ES-6. The differences between ASHRAE 90.1-2016 and NYStretch vary by building type and climate zone with site energy savings ranging from 2.3 to 14%, source energy savings ranging from 3.0 to 15.3%, and energy cost savings ranging from 3.0 to 16.4%. Incremental costs range from $0.28 to $5.59 per square foot and simple payback ranges from 3.0 to 18.4 years. In aggregate, this analysis indicates that versus ASHRAE 90.1-2016, the NYStretch yields savings statewide for each building in each climate zone with site energy savings of 5.4%, source energy savings of 6.7%, and energy cost savings of 7.1%. These savings are achieved with an average additional cost of $1.14 per square foot with a 10.5-year simple payback. S-2 Table ES-1. Aggregate Summary of Results Table 1 is a chart sho wing t he Aggr egate Sum mary of t he Result s of the Commercia l Cost Ef fectivene ss Analys is for NY Stretch. The f irst column of th e ta ble list s th e bui lding pro toty pes modeled i n th is analysis a nd i nclu de Large Office, St anda lone Retail, Seco ndary Sch ool, Larg e Hot el, e tc. T his column also i nclu des the Const ructi on W eights (%) for each buil ding prototype i n Ne w Yo rk S tate . Th e se cond col umn to the ri ght is the Site E nerg y us age in kBtu/ft2/yr. Thi s column co mpar es t he S ite Energ y usa ge u nder ASHRAE 90.1- to that unde r NY Stre tch for each buildi ng p rototype, and represent s th e sav ings by p ercen tage. The site energy savin gs r ange from 2.4 % for 20- story high-rise apa rtme nt to 13.7% for wareh ouse . The weig hted aver age s ite ener gy savings fo r al l building pr otot ypes across all climate zone s under N YStr etch is 5.4%. The thi rd co lumn compares the Sou rce Energy in kBtu /ft2 /yr for the listed build ing prototypes under ASHRAE 90.1- , NY Stre tch, and the sav ings represen ted by percentage . Th e so urce energy savings rang e from 3.0% for 10-story hig h-ris e ap artm ent to 14 .9% f or s tand -alone retail . T he weighted a vera ge s ource energy saving s for all building pr ototyp es i s 6. 7%. The f ourth col umn is the Energy Cos t in $/ft2. I t co mpar es the Energy Cost for t he building protot ype s under ASHRAE 90.1-2016 and NYStretch. The energy c ost savings range from 3.0% for 10-story high-rise apartment to 15.8% for stand-alone retail. The weighted average energy cost savings for all building prototypes is 7.1%. The fifth column to the right shows the Incremental First Cost in $/ft2 for the listed building prototypes. The weighted average incremental first cost for all building prototypes is $1.14/ft2. The sixth column shows the Simple Payback in years. The simple paybacks range from 3.27 years for large office to 13.26 years for warehouse. The weighted average Simple Payback for the listed building protypes is 10.5 years. S-3 Table ES-2. Summary of Results for Climate Zone 4A Table 2 is a Su mmary of Resul ts for Cl imate Zon e 4A. Th e format of this t able foll ows that of Table 1. The f irst colu mn of the table lists the buil ding “Pr ototy pe” s uch as L arge Offic e, S tandalone Reta il, Secondary Scho ol, Large Hotel, etc . an d sh ows that 70.9% of t he Co nstr uction in New York State is l ocat ed in Climate Zone 4A. The second colu mn s hows the Site Ene rgy usag e in kBtu/ ft2/ yr under A SHRA E 90 .1-2016 and NY Str etch and th e pe rcen tage sav ings reali zed with NYStretch . Th e site ene rgy savi ngs range from 2. 4% for 20-story high-ri se a partm ent t o 14. 0% fo r war ehous e. The weigh ted average si te en ergy savings for a ll building prototypes i s 5. 1%. T he th ird colum n sho ws t he S ource Ener gy u sage in kB tu/f t2/y r and the perc enta ge saving s be twee n AS HRAE 90.1 -201 6 and NYS tretch. Th e so urce energ y sav ings range from 3. 0% f or 10-story high-rise apartm ent t o 14 .7% for stan d-al one reta il. The w eigh ted averag e so urce energy saving s is 5.1%. The fourth column sho ws th e En ergy Cos t in $/ft2 und er A SHRAE 90.1 -201 6 and NYSt etch and the percentag e sa vings under NYSt retch. The energy cost sav ings ran ge fr om 3. 0% f or 1 0-story hi gh-r ise apartm ent to 1 5.4% for stand -alo ne retail. T he wei ghted average energy cost savings is 5.5%. The fifth column is the Incremental First Cost in $/ft2 for the listed building prototypes. The weighted average incremental cost for all the building types under NYStretch is $0.85/ft2. The sixth column is the Simple Payback in years. The simple paybacks range from 3.1 years for large office to 18.4 years for warehouse. The weighted average of the Simple Payback for the listed building protypes is 11.0 years. S-4 Table ES-3. Summary of Results for Climate Zone 5A Table 3 is a Su mmary of Resul ts for Cl imate Zon e 5A. The format o f this ta ble follo ws that o f Table 1 . The fir st column of t he ta ble lists th e bu ildi ng “ Prot otype ” suc h as Lar ge Office, Sta ndalone Re tail , Se condary School , L arge Hotel, etc. and show s th at 20 .9% o f the Cons truc tion in Ne w Yo rk State i s loc ated in Climate Zo ne 5 A. The second c olum n sh ows the Site Ener gy u sage in kBtu/f t2/y r under AS HRAE 90. 1-2016 and NYS tre tch and the per cent age savi ngs r ealiz ed w ith NYStretch. The site ener gy s avin gs range from 2.3 % for 20-story high-ris e ap artme nt to 13. 8% fo r war ehous e. T he weighte d av erage site ener gy s avings for all bu ilding prototypes is 8.2% . The thir d co lumn shows the Sou rce Energy usa ge in kBtu /ft2 /yr and the percen tage savings betw een ASHR AE 90 .1-2 and N YStr etch. The sour ce energy savin gs r ange from 3.5% for 10-story high-rise apartmen t to 15. 3% f or s tand -alo ne r etai l. The wei ghte d average sour ce e nergy savings is 1 0.0%. The fourth column show s th e En ergy Cos t in $/ft2 und er A SHRAE 90.1 -201 6 and NYSt retc h an d the percenta ge s avings under NYS tretch. The energ y cos t sa ving s ra nge f rom 3 .5% f or 1 0-story hi gh-r ise apartm ent t o 16 .4% for stand- alo ne retail. T he wei ghted average energy cost savings is 10.5%. The fift h column is the Incremental First Cost in $/ft2 for the listed building prototypes. The weighted average incremental cost for all the building types under NYStretch is $1.81/ft2. The last column is the Simple Payback in years. The simple paybacks range from 4.3 years for secondary schools and full-service restaurants to 11.7 years for stand-alone retail. The weighted average of the Simple Payback for the listed building protypes in Climate Zone 5A is 9.8 years. S-5 Table ES-4. Summary of Results for Climate Zone 6A Table 4 Summary of Results fo r Climate Zone 6A. The forma t of this table fo llows that of Table 1. The first colu mn of the tabl e lis ts the build ing “Pro toty pe” such as La rge Offi ce, Standa lone Retail, S econ dary School, Large Ho tel, and shows th at 8 .2% of c onstr uctio n in New Y ork State is l ocat ed in Clim ate Z one 6A. The secon d co lumn shows the S ite Ener gy u sage in k Btu/ ft2/ yr u nder ASHRA E 90 .1-2016 an d NY Stre tch and the pe rce ntage savin gs r eali zed with NYSt retch . Th e si te energy savi ngs range from 3.3 % for 20-story hi gh-rise apartment to 13 .2% for w areho use. The weigh ted a vera ge site en ergy savings f or al l bu ilding prototy pes is 7.4%. The third c olum n sho ws So urce Ener gy us age in k Btu/ft2/yr and the perce ntag e sa vings between ASHR AE 90.1-2 and NYSt retch . Th e so urce ener gy savings ran ge from 3. 5% fo r 10 -story high-ri se a partment to 14.1% for stand- alon e re tail . Th e we ight ed a vera ge Source Ener gy savings is 9.3% . The fourth c olum n shows the Energy Cost in $ /ft2 und er A SHRA E 90. 1-201 6 an d NY Stretch an d th e percenta ge s avin gs under NYStr etc h. The energy co st savings range from 3.5 % fo r 10 -stor y hig h-ri se a partment t o 15 .1% for st and- alon e retail. The wei ghted average energ y cost savings 9.9%. The fifth column shows the Incr emental First Cost in $/ft2 for the listed building prototypes. The weighted average incremental cost for all the building types under NYStretch is $1.96/ft2. The last column is the Simple Payback in years. The simple paybacks range from 3.0 years for large offices to 13.2 years for stand-alone retail. The weighted average of the Simple Payback for the listed building protypes is 10.5 years. Life-cycle cost savings were calculated based on a 10- and 30-year period. The results for these analyses are in Tables ES-5 and ES- 6. Over the 10-year period, the present value of the energy savings are more than the incremental costs of $0.85/sq.ft., $1.81/ sq.ft., and $1.96/ sq.ft. for climate zones 4A, 5A, and 6A, respectively. Net energy savings over 10 years are $0.18/sf in aggregate statewide. Over the 30-year period, the net present value of the energy savings also accounts for replacement and residual value, and yields savings of $0.52/sq.ft., $1.57/ sq.ft., and $1.38/ sq.ft. for climate zones 4A, 5A, and 6A, respectively. Net energy savings over 30 years are $0.81/sf in aggregate statewide. S-6 Table ES-5. Summary of 10-year Life-Cycle Cost Analysis Table 5 i s a Summa ry of the 10-year Life Cycl e Cost Analy sis. The firs t col umn on the lef t lists the cl imate zon e const ruction w eigh ts for 4A, 5A, an d 6A. The secon d colum n show s the Annual E nerg y Costs fo r all the buil ding pr ototype s under ASHRAE 90.1-201 6 and N YStretch for each cl imat e zone. T he th ird co lumn is the 10-Ye ar Life Cyc le Energy Cost for the buildin g proto types f or each climate zone. T he fourth col umn sho ws t he Increm ental First Cost f or each climate zon e. T he fifth c olumn shows t he Resi dual Va lue of me asures at 10 Yea rs. The fin al c olumn shows the net do llar sa vings over the 10 ye ars. The aggr egated net savings over 10 yea rs for New Y ork Sta te under NYStretch is $0.78/ ft2. Table ES-6. Summary of 30-year Life-Cycle Cost Analysis T able 6 is a S ummar y of the 30-year L ife Cy cle Cost Analysi s. Th e first c olumn o n the l eft lis ts the c limate z one cons truct ion weigh ts f or climate zones 4A , 5A, and 6A. The sec ond c olumn r epeats th e cons truction zone la bels. The third column shows the F irst Cost for all building p ro totypes i n eac h climate zone. The aggr egated first cost across all climate zones for al l building types is $88,326. The fourth column shows Replacement Costs for measures requiring replacement over the 30 years (i.e., measures with useful lives less than 30 years). The aggregated replacement costs are $47,637. The fifth column shows the Maintenance Costs in each climate zone. The sixth column shows the Energy Cost Savings in each climate zone over 30 years. The aggregated energy cost savings for all three climate zones is $270,636. The last column is the 30-Year Net Present Value of Savings represented in $ and $/sf for each climate zone. The aggregated 30-year net present value of savings for all three climate zones is $134,673 and $0.72/sf. Cost Effectiveness Study 1.1 Background The PNNL report Final Energy Savings Analysis of the Proposed NYStretch-Energy Code 2018, February 2019 (PNNL-ACT-10073 Rev. 1) presents the energy and energy cost savings for nine prototype buildings, which represent more than 73% of the projected new construction by floor-space accounted for in the full suite of 16 DOE prototypes. PNNL-ACT-10073 Rev. 1 identifies 15 Energy Efficiency Measures (EEMS) required by the NYStretch. The PNNL analysis and report compare the provisions of the NYStretch against ASHRAE Standard 90.1-2013 to determine savings. To determine the cost effectiveness of NYStretch relative to ASHRAE 90.1-2016, Vidaris quantified the difference in annual energy performance between NYStretch and ASHRAE 90.1-2016 using Energy Plus models for nine prototype buildings in three New York cities representing the climates zones shown in Table 1. Table 1. Prototypes and New York Climate Zones DOE Prototype Climate Zone: City (Weather file) Large Office Building CZ 4A: New York (USA_NY_New .York- J.F.Kennedy.Intl.A P.744860_TMY3.epw ) CZ 5A: Buffalo (USA_NY_Buffalo- Greater.Buffalo.Intl.AP.725280_TMY3.epw ) CZ 6A: Watertown (USA_NY_Watertow n.AP.726227_TMY3.epw ) Stand-alone Retail Secondary School Large Hotel Full-service Restaurant Outpatient Healthcare Warehouse 10-Story High-rise Apartment 20-Story High-rise Apartment The cities selected for CZs 4A and 5A are the same cities used by PNNL in its most recent national analysis of ASHRAE 90.1-2016: Energy Savings Analysis: ANSI/ASHRAE/IES Standard 90.1-2016, October 2017 (PNNL 2017); namely, New York City and Buffalo, NY. Changes to the climate zone map in ASHRAE 90.1-2016 reclassified some cities in CZ 6A to CZ 5A, including Buffalo, NY. Consequently, for CZ 5A Buffalo supplanted Albany, which had been used in previous State-specific analyses for CZ 5A. Moving Buffalo meant selecting another city for CZ 6A as PNNL 2017 used Rochester, MN to represent CZ 6A in the national analysis. Based on consultation with NYSERDA, Watertown, NY was selected to represent CZ 6A for this analysis. Weather files were downloaded directly from the DOE’s EERE website for this analysis. 1 Note that the cities used for this analysis are the same cities used in support of the New York State Department of State rulemaking process for adopting the 2020 ECCC NYS. 1.2 Energy Analysis Results PNNL developed the EnergyPlus prototype models specifically for the NYStretch analysis done for NYSERDA. NYSERDA provided PNNL’s nine prototype building types to be used by Vidaris in this analysis. Vidaris started with the NYStretch models and modified them as necessary to create the ASHRAE 90.1-2016 baseline models for each prototype appropriate to each climate zone. A list of the differences between the NYStretch and 90.1-2016 models is provided in Appendix A. To determine the statewide savings that the NYStretch offers beyond ASHREA 90.1-2016, weighting factors for each result were applied to determine the aggregate savings. The weighting factors used in this analysis were developed by PNNL based on construction volume by building type and climate zone and are presented in PNNL-ACT-10073 Rev. 1. Vidaris used the same energy prices used for the 2020 ECCC NYS cost-effectiveness and are shown in Table 4. These rates are based on commercial energy price information available from the U.S. Energy Information Administration (EIA) for the 2017 calendar year. 2 www.energycodes.gov/development/commercial/90.1_models The year 2017 was the most current year for which complete data for electricity and natural gas rates and heat content for natural gas was available as of January 2019 when the 2020 NYS ECC cost-effectiveness analysis was started. Vidaris used EnergyPlus v8.0.0 and generated the results for each prototype under both codes and for each climate zone. Based on the prototype buildings, 2020 NYStretch has been shown to be 7.1% more efficient than ASHRAE 90.1-2016 on a cost per square foot basis. With respect to site and source energy, NYStretch yields savings of 5.4% and 6.7%, respectively. The aggregated results by code and by climate zone are presented in Table 2 (See Appendix B for more detailed results by building type.) Table 2. Aggregated Differences in Annual Energy Use and Annual Energy Cost between ASHRAE 90.1-2016 and 2020 NYStretch t h e A g g regated Dif fer ence s in A nnual Energ y us age a nd A nnual Ener gy Cost between ASHRAE 90. 1-2016 and 2020 NYSt retch. The tab le co mpares th e differe nces in e nerg y usage in kBtu f or both si te and sour ce energy , energ y cost (by e lectricit y and gas and in t otal ), the e nergy use intens ity in kBt u/sf a nd the energy cost index i n $/sf between AS HRA E 90.1-2016 a nd NYStretch. In terms of th e ene rgy c ost i ndex, NYSt retch is 7 .1 4% more s tringent than ASHR AE 90.1-201 6. The table also show s the ag gregat ed Savings by Cl imate Zone fo r S ite and So urce e nerg y, en er gy cost, (by elect ricity and gas and in tota l), ener gy us e intens ity and energy cost in dex. The tabl e in cludes t he con stru ction w eighting factors i n % for ea ch climat e zone. 1.3 Cost-Effectiveness Analysis As part of its analysis, Vidaris included statewide-average utility rates available from the EIA. Additionally, Vidaris modified the cost data to reflect city-specific cost factors from RS Means. For consistency, the EIA rate data and RS Means cost factors were selected from 2017, the most recent year for which complete annual average utility data was available from the EIA. Cost-effectiveness analysis was not included in PNNL-ACT-10073 Rev. 1. Consequently, Vidaris developed incremental cost data based predominantly on the following sources: • 2018 Building Construction Costs with RSMeans Data (RSMeans 2018), • 2018 Mechanical Costs with RSMeans Data (RSMeans 2018), and • cost data used by PNNL in their national cost-effectiveness analysis of ASHRAE 90.1-2016 Where these sources were insufficient, Vidaris obtained estimates based on data from the internet (e.g., electric vehicle charging stations), or its own experience supplemented as needed with conversations with other practitioners (e.g., infiltration testing, lighting). The life of energy efficiency measures was determined from NYSERDA’s Whole Building Incentive Calculator and are summarized in Table 3. Detailed cost estimates by building type and climate zone are included in Appendix D. Table 3. Measure Life Assumptions the Measure Life As sumptions. T he table is made up of two co l umns which list s the measure an d correspondi ng measure life in y ea rs. Regarding the life-cycle costing, PNNL’s latest analysis of ASHRAE 90.1-2016 is based upon Energy Price Indices and Discount Factors for Life-Cycle Cost Analysis published by the National Institute of Standards and Technology (NIST). NIST data for 2017 was selected to be consistent with the other cost data being used. NIST identifies the real discount rate for non-energy related expenses (i.e., maintenance and replacement costs) and delineates Uniform Present Value Factors (UPV Factors) to be used for life- cycle periods from one to 30 years, by energy type, for Census Region 1 (which includes New York State) and based on a real DOE discount rate of 3.0%. The UPV Factor is multiplied by the annual energy cost to determine the life-cycle value of energy cost over the life-cycle period. The city cost factors, utility cost data, and life-cycle parameters used in the analysis are presented in Table 4. Table 4. Life-Cycle Cost Analysis Parameters provides the parameters and their sources used in the Life Cycle Cost Analysis. The first row shows the energy price values and their source. The next row shows the Energy Price Escalation factors over 10 years and 30 years for electricity and natural gas and their source. The next row displays the Discount Rate used in the analysis, set at 3.0%. The final row is the City Code Index for construction costs for the representative cities in each climate zone, and their source. The life of a measure does not necessarily equal the life-cycle study period. Measures may have longer or shorter lives than the 10- and 30-year periods used for this analysis, as detailed in Table 3. Consequently, a residual value of the measures was included in the analysis to account for the value of the measure associated with the remaining life of the materials installed as part of the measure. The residual values used are based on straight line depreciation of the present value of the measure over the life of the measure. For example, if a measure has a 20-year life, then at the end of 10 years it has a residual value equal to 50% of the first cost to install the measure. Economic analysis results based on annual energy savings and simple payback are presented in Tables 5 and 6. The payback period varies from 3.0 years for Large Office in CZ6A to 18.4 years for Warehouse in CZ4A. In aggregate, the statewide area weighted payback period is 10.5 years. Table 5. Energy Savings and Simple Payback for By Building Type and Climate Zone the Energy S avings and Simpl e Payba ck By Bui lding Typ e within each Clim ate Zone. The tabl e lists t he buildi ng protot ype, Clima te Zon e, t he C onst ructi on We ight (%) of that buil ding prototype in the cli mate zone, and the sav in gs u nder NYS tret ch co mpare d to ASH RAE 90.1-2016 by Site Energy ( kBtu /ft2 /yr), Source Energy (k Bt u/ft 2/yr ), a nd E nergy Cost . It inc ludes the Inc reme ntal First Co st b y $/ ft2 and Simple Payb ack i n ye ars. The Tabl e als o sho ws th e to tals of these val ues by climat e zon e an d the aggregate val ues fo r th e en tire stat e. I n agg regat e th e energy cost sav ings are 7.1% , the inc remental first cost is $1 .14/ ft2, and the simpl e pay back is 1 0.5 years. Table 6. Energy Savings and Simple Payback by Building Type t h e E n e r gy Savings a nd Simple Paybac k by Bu ilding Ty pe. The t able list s the bui lding pro totype, C limate Zo ne, the C onstructi on Weight (%) of th at building in N ew Y ork Stat e, an d the sav ings under NYStre tch compared to A SHRA E 90 .1-2016 by Site Ene rgy (kBtu/ft2/yr), So urce Ener gy ( kBtu/ ft2/y r), a nd En ergy Cost. It inc lude s the Increme ntal Firs t Cost by $/ft2 and Simp le Payback in ye ars. The tab le a lso p rovi des the weighted aver age for each of t he a fore mentioned values. Additionally, the results of the 10- and 30-year life-cycle analyses are presented in Tables 7 and 8, respectively. The results show that the 10-year present value of energy savings between NYStretch and ASHRAE 90.1-2016 is greater than the installed cost of materials for most building types in each of the climate zones examined with the exception of Standalone Retail, Outpatient Healthcare and Warehouse in CZ4A. The net savings are aggregated based on the floor space-based weighting factors. The resulting aggregated energy cost savings, for all climate zones and prototypes, is greater than the installed cost of materials to achieve the savings of $0.18/sf over the 10-year period. Table 7. 10-Year Present Values of Energy Cost Savings between ASHRAE 90.1-2016 and NYStretch the 10 Ye ar P re sent Valu es of Ene rgy Cost Savings b etween ASHRA E 90 .1-2016 and NYStret ch. T he t able list s th e buildin g pr ototype, C limat e Zone an d th e Const ruct ion Wei ght of t hat bu ilding type in each cl imat e zone (% ), a nd compar es t he Annual Energ y Cost an d 10 Year L ife Cycle E nergy Co st und er ASHR AE 90.1- an d NY Stretch. Fin ally it s hows the Incre menta l First C ost by buil ding type a nd clima te zon e, the Residual Valu e of m easur es at 10 yea rs, and t he Net Savings over 10 years in dollars and $/ sf. Th e tabl e not only shows the v alues f or each b uilding p roto type, but also includ es the to tals fo r each cli mate zo ne and the re specti ve agg regate val ues. Table 8 shows that over 30 years, the present value of the energy savings is worth more than the first, maintenance and replacement costs for each of the buildings in each of the climate zones examined, with the exception of Standalone Retail in CZ4A. The resulting aggregated energy cost savings, for all climate zones and prototypes, is greater than the installed cost of materials to achieve the savings of $0.81/sf over the 30-year period. Table 8. 30-Year Present Values of Energy Cost Savings between ASHRAE 90.1-2016 and NYStretch the 3 0 Ye ar Pre sent Val ues of En ergy Cos t Savings between ASHRA E 90.1 -2016 an d NYStr et ch. The table list s the Pr ototy pe , Cl imate Zo ne, the C onstruct ion Weight (%) of that bu ildi ng type in the c limate zone, F irst Cos t, repl ac emen t costs , and e ne rgy cost savings . Fina lly i t pres ents th e 30 ye ar net p resent v alue of savi ng s in dollars and $/ sf . In a ll insta nces exc ept s ta ndal one ret ail in cl imate zone 4, the 30 y ear n et pre sent val ue of s av ings i s positi ve. The tabl e not only sho ws the v al ues fo r each b uilding proto ty pe, but also include s the to tals for each cl imate z one and the respecti ve aggre gate val ues. A-1 Appendix A. Differences between 2020 NYStretch Energy Code and ASHRAE 90.1-2016 by DOE Prototype and Climate Zone Note: This appendix adopts the EEM numbering convention used in the PNNL report, Final Energy Savings Analysis of the Proposed NYStretch-Energy Code 2018, February 2019 (PNNL-ACT-10073, Rev. 1). The following EEMs were not included in Vidaris’ analysis as they are not considered stretch measures with respect to ASHRAE 90.1-2016: • EEM 5 Occupancy Sensors and Automatic Lighting Controls • EEM 6 Exterior Lighting Controls • EEM 8 Hotel Guestroom HVAC Vacancy Control • EEM 14 ERV for Apartment Makeup Air Units The following EEMs were not included in the final version of the 2020 NYStretch Energy Code: • EEM 9 High-efficiency SHW (Refer to Appendix C for further discussion) • EEM 15 Demand-based Controls for Recirculated SHW systems A-2 EEM 1 Enhanced Insulation for Roofs and Walls This measure amends Table C402.1.4 with more stringent U-factors for opaque thermal envelope assemblies. The ASHRAE compliance path is required to comply with this revision per section C401.2.1.a of NYStretch. Cost data for this measure was developed by determining an insulation cost per R-value from RSMeans and applying this to the additional insulation required to achieve the improved U-values specified in table C402.1.4. It was assumed that continuous mineral fiber would be used to meet the required thermal performance for walls; additional extruded polystyrene was used to meet the increased performance for roofs. This requirement applies to each of the building prototypes as follows. OPAQUE THERMAL ENVELOPE (U-factor) NYStretch ASHRAE 90.1 -2016 Large office, Stand-alone retail CLIMATE ZONE 4 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: mass (non-res) 0.099 0.104 CLIMATE ZONE 5 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: mass (non-res) 0.086 0.090 CLIMATE ZONE 6 Roofs: insulation entirely above deck 0.029 0.032 Walls, above grade: mass (non-res) 0.076 0.080 Full-Service Restaurant 3 CLIMATE ZONE 4 Roofs: attic and other 0.020 0.021 Walls, above grade: steel framed (non-res) 0.061 0.064 CLIMATE ZONE 5 Roofs: attic and other 0.020 0.021 Walls, above grade: steel framed (non-res) 0.052 0.055 CLIMATE ZONE 6 Roofs: attic and other 0.019 0.021 Walls, above grade: steel framed (non-res) 0.047 0.049 Secondary School, Outpatient Healthcare CLIMATE ZONE 4 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: steel framed (non-res) 0.061 0.064 CLIMATE ZONE 5 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: steel framed (non-res) 0.052 0.055 CLIMATE ZONE 6 Roofs: insulation entirely above deck 0.029 0.032 Walls, above grade: steel framed (non-res) 0.047 0.049 U-factor for attic roof in the NYStretch model was revised to reflect updated draft requirements A-3 OPAQUE THERMAL ENVELOPE (U-factor) NYStretch ASHRAE 90.1 -2016 Large Hotel CLIMATE ZONE 4 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: mass (residential) 0.086 0.090 CLIMATE ZONE 5 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: mass (residential) 0.076 0.080 CLIMATE ZONE 6 Roofs: insulation entirely above deck 0.029 0.032 Walls, above grade: mass (residential) 0.067 0.071 Warehouse 4 CLIMATE ZONE 4 Roofs: metal building 0.035 0.037 Walls, above grade: metal building 0.048 0.060 CLIMATE ZONE 5 Roofs: metal building 0.035 0.037 Walls, above grade: metal building 0.048 0.050 CLIMATE ZONE 6 Roofs: metal building 0.028 0.031 Walls, above grade: metal building 0.048 0.050 10-Story Apartment, 20-Story Apartment CLIMATE ZONE 4 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: steel framed (residential) 0.061 0.064 CLIMATE ZONE 5 Roofs: insulation entirely above deck 0.030 0.032 Walls, above grade: steel framed (residential) 0.052 0.055 CLIMATE ZONE 6 Roofs: insulation entirely above deck 0.029 0.032 Walls, above grade: steel framed (residential) 0.044 0.049 U-factor for metal building walls and roof in the NYStretch model were revised to reflect updated 2020 NYStretch requirements. A-4 EEM 2 Enhanced Fenestration This measure amends Table C402.2.4 with more stringent U-factors and SHGCs for building envelope fenestration assemblies. The ASHRAE compliance path is required to comply with this revision per section C401.2.1.b of NYStretch. Currently under the 2020 NYS ECCC, there is a proposed revision to 2018 IECC such that north-facing vertical fenestration will be required to meet the SHGC requirements applicable to south, east and west facing fenestration. Consequently, this analysis assumes all orientations will meet the SHGC requirements for the south, east, and west orientations. Window performance in the energy models is based on weighting factors provided by PNNL for fixed, operable, and non-metal framing for each of the building prototypes. This requirement applies to all the building prototypes. Vidaris revised the U-factors in the PNNL NYStretch models to reflect the current NYStretch requirements. Cost data for this measure was developed based on the incremental costs between windows with respect to decreased U-factor in PNNL’s national cost effectiveness analysis. VERTICAL FENESTRATION (U-Factor) NYStretch ASHRAE 90.1-2016 Large Office, Stand-alone Retail, Secondary School, Large Hotel, Full-Service Restaurant, Outpatient Healthcare, Warehouse, 10-Story High-Rise Apartment, and 20-Story High-Rise Apartment CLIMATE ZONE 4 Fixed fenestration (metal) 0.36 0.38 Operable fenestration (metal) 0.43 0.46 Non-metal 0.30 0.31 SHGC 0.36 0.36 Skylight U 0.48 0.50 Skylight SHGC 0.38 0.40 CLIMATE ZONE 5 Fixed fenestration (metal) 0.36 0.38 Operable fenestration (metal) 0.43 0.46 Non-metal 0.27 0.31 SHGC 0.38 0.38 Skylight U 0.48 0.50 Skylight SHGC 0.38 0.40 CLIMATE ZONE 6 Fixed fenestration (metal) 0.34 0.36 Operable fenestration (metal) 0.41 0.45 Non-metal 0.27 0.30 SHGC 0.40 0.40 Skylight U 0.48 0.50 Skylight SHGC 0.38 0.40 A-5 EEM 3 Air Leakage Testing for Mid-sized Buildings This measure amends section 5.4.3.1.3 to add a requirement for buildings 25,000 to 50,000 square feet and less than or equal to 75 feet in height to comply with whole building pressurization testing and air barrier requirements. Previously, testing was not required. For this analysis, the new testing requirement applied only to the Outpatient Healthcare and Warehouse prototypes. The difference between 90.1-2016 and NYStretch are as follows: AIR LEAKAGE [cfm/sf] NYStretch 90.1-2016 Outpatient Healthcare 0.40 1.00 Warehouse 0.40 1.00 Infiltration testing was assumed to be done once to confirm compliance. Any additional testing would be optional since it would not necessarily be required for compliance but would be an aid during construction. Costing for this measure was based on Vidaris experience with this work and feedback from industry professionals. For CZ 5A and 6A the size of the Outpatient Healthcare allows for a cost of $3,200, and $8,500 for climate CZ 4A due to complexity related testing in locations like New York City. The Warehouse was considered more complex due to the volume and height of a typical warehouse with greater cost of testing equipment and more effort to do the work. Ultimately, the cost was judged to be twice that of the Outpatient Healthcare, or about $17,000 for CZ 4A and $6,400 for CZs 5A and 6A. EEM 4 Reduced LPD for Interior Lighting This measure amends Tables C405.3.2(1) and C405.3.2(2) with reduced lighting power densities (LPD). The ASHRAE compliance path is required to comply with this revision per section C401.2.1.c of NYStretch. The ASHRAE compliance path is also directed to follow the requirements of section C406—Additional Efficiency Package Options. Per direction from NYSERDA, the analysis is based on Option 2—reduced lighting power in accordance with section C406.3, which specifies an additional 10% reduction in connected lighting power. This requirement applies to all the building prototypes. Previous cost estimates from PNNL associate a lower first cost for buildings with lower LPD; based on feedback from lighting design professionals, it is anticipated there will be no cost associated with this measure. LPDs are based on the space-by-space method unless indicated otherwise. A-6 INTERIOR LIGHTING POWER DENSITY (W/ft2) NYStretch NYStretch less 10% 90.1-2016 Large Office Office (building area method) 0.69 0.62 0.79 Stand-Alone Retail BOH (area w eighted average) 0.50 0.45 Sales Area 1.06 0.95 1.22 Lobby 5 0.90 0.81 1.00 Display lighting - type 1,2,3 (area w eighted average) 0.32 0.29 Secondary School Classroom 0.74 0.67 0.92 Corridor 0.58 0.52 0.66 Lobby5 0.90 0.81 1.00 Mechanical5 0.39 0.35 0.43 Restroom 0.75 0.68 0.85 Office 0.85 0.77 0.93 Gymnasium/exercise area5 0.50 0.45 0.50 Kitchen/Food Preparation Area 0.92 0.83 1.06 Cafeteria/Dining 0.53 0.48 0.63 Library/reading area (Building Area Method) 0.78 0.70 0.82 Audience seating area – auditorium5 0.63 0.57 0.63 Large Hotel Office (Building Area Method) 0.69 0.62 0.79 Retail (Building Area Method) 0.91 0.82 1.06 Mechanical rooms5 0.39 0.35 0.43 Storage 0.43 0.39 0.46 Laundry Room 0.43 0.39 0.43 Dining Area - family dining5 0.54 0.49 0.71 Lobby – hotel 0.68 0.61 1.06 Guest rooms 0.75 0.68 0.77 Corridor 0.58 0.52 0.66 Kitchen/Food Preparation Area 0.92 0.83 1.06 10-story Apartment Office - enclosed5 0.85 0.77 0.93 Corridor 0.58 0.52 0.792 Stairw ell 0.50 0.45 0.58 Mechanical rooms5 0.39 0.35 0.43 LPDs in PNNL’s NYStretch model were revised to reflect current NYStretch code requirements. A-7 INTERIOR LIGHTING POWER DENSITY (W/ft2) NYStretch NYStretch less 10% 90.1-2016 20-story Apartment Office - enclosed6 0.85 0.77 0.93 Corridor 0.58 0.52 0.792 Stairw ell 0.50 0.45 0.58 Mechanical rooms7 0.39 0.35 0.43 Sales Area7 1.06 0.954 1.22 Display lighting - retail type 37 (w eighted average) 1.05 0.945 1.05 Display lighting - retail type 27 (w eighted average) 0.45 0.405 0.45 Display lighting - retail type 17 (w eighted average) 0.45 0.405 0.45 Additional retail allow ance [Watts] 7 1,000 1,000 Outpatient Healthcare Conference/Meeting/Multipurpose 0.93 0.84 1.07 Corridor 0.58 0.52 0.792 Dining Area - cafeteria/fast food 0.53 0.48 0.63 Healthcare Facility - nurse station 0.75 0.68 0.81 Healthcare Facility - patient room 0.45 0.41 0.62 Healthcare Facility - physical therapy 0.84 0.76 0.84 Healthcare Facility - recovery room 0.89 0.80 1.03 Healthcare Facility - exam/treatment 1.16 1.04 1.68 Healthcare Facility - imaging room 0.98 0.88 1.06 Healthcare Facility - operating room 1.87 1.68 2.17 Lobby - all other7 0.90 0.81 1.00 Lounge/breakroom – healthcare7 0.53 0.48 0.78 Office - enclosed >250 sf7 0.85 0.77 0.93 Restroom7 0.75 0.68 0.85 Storage room, 50-100 sf 0.43 0.39 0.46 Full-service Restaurant Dining Area - family dining 0.54 0.49 0.71 Kitchen/Food Preparation Area 0.92 0.83 1.06 Warehouse Office (Building Area Method) 0.69 0.62 0.79 Warehouse - storage- medium to bulky 0.27 0.24 0.35 Warehouse - storage - small hand carried items 0.65 0.59 0.69 LPDs in PNNL’s NYStretch model were revised to reflect current NYStretch draft code requirements A-8 EEM 7 Reduced Fan Power Allowances This measure found in Tables C403.8.1(1) and 6.5.3.1-1 limits the fan energy used by heating, ventilation, and air-conditioning (HVAC) equipment. It requires that variable air volume (VAV) systems use no more than 0.0010 bhp/cfm and constant air volume (CAV) systems use no more than 0.00088 bhp/cfm for fan power. These limits only apply to fan motors larger than 5 nameplate horsepower; smaller fan sizes are not regulated in either code. This requirement applies to the large office, standalone retail, secondary school, large hotel, and outpatient healthcare building prototypes. Vidaris revised the PNNL NYStretch models to reflect current NYStretch code requirements for these fan systems. Costing for this measure was based on increased system capacities for larger air handling equipment that would result in increased cross-sectional areas of the unit and components (e.g., coils, filters, ducts, unit housings, etc.) that would reduce the static pressure, and thus the brake horsepower, for the affected systems. For constant volume fans, this required an increased capacity of 3.2%; variable volume systems required a 13.4% increase in capacity. Fan Power Allowance NYStretch 90.1-2016 Large Office, Standalone Retail, Secondary School, Large Hotel, and Outpatient Healthcare CV (bhp/cfm) 0.00088 0.00094 VAV (bhp/cfm) 0.00100 0.00130 EEM 10 High-efficiency Commercial Kitchen Equipment EEM10 reduces plug load energy usage. This measure upgrades major commercial kitchen appliances to ENERGY STAR®. Costing for this measure was based on equipment lists from previous projects and the incremental costs from the Savings Calculator for ENERGY STAR® Commercial Kitchen Equipment developed by the U.S. EPA and DOE. 7 To account for the variation of kitchen sizes in the affected prototypes, an incremental cost per square foot was used. Affected prototypes: secondary school, full-service restaurant, and large hotel. The Savings Calculator for Energy Commercial Kitchen Equipment is available at https://www.energystar.gov/sites/.../commercial_kitchen_equipment_calculator.xlsx A-9 EEM 11 Thermal Bridging Reduction EEM11 addresses the mandatory provision in NYStretch to include a minimum R-3 thermal break at penetrations, including parapet walls and balcony projections. None of the prototypes include balconies. Each building with a flat roof is assumed to have a parapet that is 42 in. high and follows the perimeter of the roof. This analysis assumes that each prototype meets prescriptive requirements of the code. This measure simply requires that elements of the envelope that are noncompliant have an R-value no less than R-3, which is itself less than code compliant. Consequently, the remainder of the envelope systems would have to be improved to reach overall code compliance. Consequently, this measure does not result in any energy savings. Additional insulation is included in the lifecycle cost analysis to address the additional cost of meeting the prescriptive requirements for opaque envelope assemblies. Costing for this measure was based on the assumption of additional mineral wool insulation at the parapet to eliminate thermal bridging. It was assumed that this will require 12in at wall + 42in of parapet height + 12in wide parapet + 42in of parapet height to roof deck = 9 ft of total insulation of R-4.2/in for entire perimeter of roof. Affected prototypes: large office, standalone retail, secondary school, large hotel, outpatient healthcare, 10-story high-rise apartment, and 20-story high-rise apartment. EEM 12 Exterior Lighting Power Reduction This measure modifies Table C405.4.2(2) with reduced exterior lighting power allowances. As allowances vary by lighting zone, the model uses an average of lighting zones for each protype building; these averages were developed by PNNL for the national analysis of ASHRAE 90.1-2016. Following the methodology used by PNNL’s analysis of NYStretch, it is assumed there are no parking lots for prototypes in climate zone 4A. PNNL also excluded exterior lighting for 10-story and 20-story apartment prototypes as the majority of these buildings are in climate zone 4A and have no or limited exterior lighting. At the time of this analysis, this measure is only included in the IECC overlay of the NYStretch draft. Vidaris included this measure in the analysis at NYSERDA’s direction as the final version of the code is anticipated to include it in the ASHRAE path as well. A-10 Based on an analysis of typical parking lot lighting, it was determined that standard metal halide lamps could be used to achieve the LPD limits for NYStretch. As there is only a minimal reduction in façade and entryway lighting, it was assumed there is no incremental cost for this measure. Façade W/sf] Doors [W/lf] Parking lot [W/sf] * Lighting Zone NYStretch 90.1-2016 NYStretch NYStretch 0.000 0.000 12.6 14.0 0.03 0.03 0.075 0.100 12.6 14.0 0.04 0.04 0.113 0.150 20.0 21.0 0.05 0.06 0.150 0.200 20.0 21.0 0.05 0.08 *Parking lot lighting is only included in climate zones 5A and 6A Lighting Zone Prototype Façade W/sf] Doors [W/lf] Parking lot [W/sf] * NYStretch 90.1- NYStretch NYStretch Large Office 0.150 0.200 20.0 21.0 0.050 0.080 2,3 Stand-alone Retail 0.094 0.125 16.3 17.5 0.045 0.050 2,3 Secondary School 0.094 0.125 16.3 17.5 0.045 0.050 3,4 Large Hotel 0.132 0.175 20.0 21.0 0.050 0.070 2,3,4 Full-service Restaurant 0.113 0.150 17.5 18.7 0.050 0.060 2,3 Outpatient Healthcare 0.094 0.125 16.3 17.5 0.045 0.050 2,3 Warehouse 0.094 0.125 16.3 17.5 0.045 0.050 3,4 10 Story Mid-Rise Apt. n/a n/a n/a 3,4 20 Story High-Rise Apt. n/a n/a n/a * Parking lot lighting is only included in climate zones 5A and 6A A-11 EEM 13 Efficient Elevator, Regenerative Drives This measure requires regenerative drives for elevator motors with a rise of 75 feet or greater. The PNNL NYStretch models included this as a 5% power reduction for the elevator motors. Costing for this measure was based on data from previous projects. Prototype Building NYStretch [W, total] 90.1-2016 [W, total] LARGE OFFICE – (12) 30hp motors 232,222 244,444 10-STORY APARTMENT – (1) 30hp motor 19,352 20,371 20-STORY APARTMENT – (2) 30hp motors 19,352 20,371 B-1 Appendix B Differences in Energy Performance, and Annual Energy Cost between 2020 NYStretch Energy Code and ASHRAE 90.1-2016 by Climate Zone and Building Type B-2 Three pages of Table B1 ( Parts A, B and C) in Appen dix B show the Differ enc es in Energy Perf ormance and Annual E nergy Costs betw een ASHRA E 90.1 -2016 and NYStretch 2020 by C limate Zone and buil ding T ype. The table compa res t he d ifferences in energy p erformanc e and annual ene rgy costs for each buildi ng type b y cli mate z one. The table ident ifies the energy usa ge in kWh and th erms under ASH RAE 90.1- 2016 a nd NY Stretc h, a nd the s avin gs realized. It fu rther i dent ifies under eac h code the total k Btu by si te and source, t he total E nergy Cos t by E lectricty , Gas and i n Tota l and prov ides the s avin gs realized b y buildin g and cli mate z one. The t able also compares the En ergy Use Inten sity a nd Ene rgy Cost I ndex betwe en N YStretch an d ASHRAE 90.1-20 16. In a few instances , ther e ar e nega tive savings ide ntified which indic ates th at N YStretch re quir em ents for those b uilding t ypes r esult in h igher ener gy costs compar ed to ASH RAE 9 0.1-20 16 req uirements. B-3 Table b1 con tin ued B-4 third page o f t able B B-5 Table B 2 (Par ts A, B and C) show the Pa ybac k Period of the I ncremental Firs t Cos t whe n compar ed to the ene rgy sav ings under N YStretc h by Climat e Zone and Building Type. Comparing ASHRAE 90.1- 2016 t o NYStretch to deter mine annual e ne rgy savin gs in dol lars a nd $/SF, the table sho ws the Energy Usa ge in kWh and therms, Annual Energy Cost (Elec tricity an d Gas), the Total (of the aforement ion ed v al ues), and the Annu al Sav ings real ized under NY Stretc h. The Inc remental First Cost is t hen liste d for eac h buil ding type in each clim ate zo ne and the payback p eriod in year s. Con struction wei ghtin g factors for eac h building type by climate z one are a lso inclu ded. B-6 Part B of tab le B2 B-7 Table B 3 (Par ts A, B and C) show the 10 Yea r Presen t v alue o f dif ferences in Ann ual En ergy Pe rformance, Energy Cos t, an d First Co st betw een ASHRAE 9 0.1-201 6 and 2020 NY Stretch b y Climate Zone and Build ing Type. Fo r each bui lding t ype in each climate z one, the t able com pa res the e nergy usa ge in kWh and t herms and ene rgy cost under ASH RAE 90. 1-2016 to NYSt retch. The table then sh ows the 10- Year Li fe Cycle Energy C osts i n terms of Electric ity, Gas and in T ot al, and t he saving s real ized unde r NYStretch. The Incr emental F irst Co st is subtract ed from th e total sa vings and the Resi dual V alue of m easures at 10 years is added to determ ine the Net Sa vings ove r 10 Years . Thes e values ar e provi ded in terms of T otal s avings and by the C ost Inde x in $/SF . In two i nstances in cli mate zone 4A, there ar e negativ e savings identi fied which ind icates tha t NYStre tc h require ments for those building types result in highe r energy costs c ompared to ASH RAE 90.1- B-8 Part B of tab le B3 C-1 Appendix C EEM 9 High-efficiency SHW Based on concerns over possible preemption of this measure, the requirement was subsequently removed from NYStretch. The analysis of the impact of the measure is included to memorialize the findings. This measure required a high-efficiency service water heating (SWH) system. A service water heating system with large input size for either individual water heater or aggregate capacity of all water heaters would be required to have minimum thermal efficiency (Et) of 94%. This requirement only applied to buildings with water heating equipment with an individual or aggregate input rating of 1,000,000 Btu/h or greater. PNNL’s analysis for this measure originally showed savings associated with the prototypes for large hotel, full-service restaurant, outpatient healthcare, 10-story apartments and 20-story apartments. Upon review, Vidaris found only 20-story apartment building prototype had a SHW system meeting the 1,000,000 Btu/h threshold. Costing for this measure was based on the price differential for three 400 MBH boilers with the efficiencies in the following table. 2020 NYStretch ASHRAE 90.1-2016 20-Story Apartment High efficiency hot w ater heaters w ith 94% Et 1,200 MBH total capacity Hot w ater heaters w ith 90% Et 1,200 MBH total capacity Based on Vidaris’ analysis, savings and payback for this measure varies by climate zone as shown in the following table. Annual energy cost savings are between $563 and $633, and payback is between 8.58 and 5.65 years for CZs 4A and 6A, respectively. C-2 The second table in A ppendix C compares the Sa vings a nd Payback p eriod for High-Eff icienc y Hot Water H eat ers un der NYStret ch f or ea ch Cl imate Zone. Co mparing the hot water heate r saving s and p ayback o f NYStretch- a nd ASHRAE -requi red hot water h eat effi cien cies, the ta ble outlines the cost s, sav ings and energy usage o f a 20-Story H ighrise A partme nt in ea ch clim ate zone . Th e tabl e co mp ares Energy Usage in kWh an d therms , Annua l NYS En er gy Cost by E lectricit y, Gas , and in Total) , and th e to tal An nual Savings rea lized using NYStretch requirements. The table then lists the Incremental First Costs and payback period in each climate zone. Based on the limited savings for the measure and concerns regarding potential federal preemption of this section, NYSERDA elected not to include the SHW requirements in the final version of the 2020 NYStretch Energy Code. D-1 Appendix D. Cost Estimates cos t estimate worksheet example page number and footer cos t estimate worksheet example NYStretch_Cost_worksheet3 Large Office 5A 2 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Large Office 6A 3 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Standalone Retail 4A 4 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Standalone Retail 5A 5 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Standalone Retail 6A 6 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Secondary School 4A 7 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Secondary School 5A 8 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Secondary School 6A 9 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Large Hotel 4A 10 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Large Hotel 5A 11 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Large Hotel 6A 12 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Full-service Restaurant 4A 13 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Full-service Restaurant 5A 14 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Full-service Restaurant 6A 15 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Outpatient Healthcare 4A 16 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Outpatient Healthcare 5A 17 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Outpatient Healthcare 6A 18 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Warehouse 4A 19 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Warehouse 5A 20 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 Warehouse 6A 21 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 10 Story High-Rise Apt. 4A 22 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 10 Story High-Rise Apt. 5A 23 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 10 Story High-Rise Apt. 6A 24 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 20 Story High-Rise Apt. 4A 25 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 20 Story High-Rise Apt. 5A 26 of 27 printed: 6/19/2019 10:55 PM cos t estimate worksheet example NYStretch_Cost_worksheet3 20 Story High-Rise Apt. 6A 27 of 27 printed: 6/19/2019 10:55 PM NYSERDA, a public benefit corporation, offers objective information and analysis, innovative programs, technical expertise, and support to help New Yorkers increase energy efficiency, save money, use renewable energy, and reduce reliance on fossil fuels. NYSERDA professionals work to protect the environment and create clean-energy jobs. NYSERDA has been developing partnerships to advance innovative energy solutions in New York State since 1975. To learn more about NYSERDA’s programs and funding opportunities, visit nyserda.ny.gov or follow us on Twitter, Facebook, YouTube, or Instagram. New York State Energy Research and Development Authority 17 Columbia Circle Albany, NY 12203-6399 toll free: 866-NYSERDA local: 518-862-1090 fax: 518-862-1091 info@nyserda.ny.gov nyserda.ny.gov State of New York Andrew M. Cuomo, Governor New York State Energy Research and Development Authority Richard L. Kauffman, Chair  |  Alicia Barton, President and CEO