It is clear that, as written, the ventilation volumes should be the same in both models. a) Natural draft b) Mechanical. Is there any flexibility in how we model the p. Our process load is higher than 25%. LEED Certification and the Point System. The exception we would like to take is as follows: We meet all the other requirements of this prerequisite for minimum energy efficiency requirements. Our design is approximately a 2.9% voltage drop, which meets the latest edition of the National Electric Code 215-2(A)(2) FPN#2 which allows between 3-5% voltage drop. 7%. such as Energy model? Projects may calculate the Equivalent ASHRAE 90.1-2010 Performance improvement as: In this case, the 50,000 square feet of area would be modeled with a fossil fuel heat source in the Baseline Case (System Type #5 - Packaged VAV with hot water reheat), and the 25,000 square feet of area would be modeled with an electric heat source in the Baseline Case (System Type #4 - Packaged Single Zone Heat Pump). Yes, projects applying Option 1: Whole Building Simulation, and regulated by ASHRAE Standard 90.1-2013 may document additional energy performance improvement under LEED v4 EA credit Optimize Energy Performance as described below. With regards to the maximum U-factor and SGHF requirements on the building envelope it is suggested we apply only to parts of the envelope separating the air conditioned space with the outdoor space. CS-Retail (except restaurant/grocery) 3% Applicable internationally. The LEED Online website was introduced at GreenBuild in Atlanta in November 2005, however USGBC wrestled with numerous technical challenges and did not go live until the Spring of 2006. The proposed approach is an acceptable means of lighting power reduction provided the overall maximum Lighting Power Density is maintained at or below ASHRAE 90.1 specifications. As required in LEED Interpretation 10044, all equipment classified as eligible by ENERGY STAR must be included in the calculations. As 90.1-2007 is essentially a compilation of addenda, we assume it may be treated in the way outlined in the footnote to EA prerequisite 2, "Project teams wishing to use ASHRAE approved addenda for the purposes of this credit may do so at their discretion. 3. NC-School 6% Method 2: This Standard is explicit in the requirement as stated in Section 8.4.1.1: "Feeder conductors shall be sized for a maximum voltage drop of 2% at design load." To meet the 2% requirement, the cable size would be increased to parallel 750 MCM. ASHRAE Interpretation ASHRAE/IES IC 90.1-2007-14 states that the baseline pump power cited in Section G3.1.3.10 was developed as 22 W/gpm total for all baseline chilled water pumps. Applicable Internationally. LEEDuser is supported by our premium members, not by advertisers. The Appendix G modeling method must be used for the LEED submission, even if the Energy Cost Budget method is used to document local code compliance. 90,000 square feet is conditioned by a variable air volume system with electric reheat, and 10,000 square feet is conditioned with fossil fuel furnacesThe following buildings would be modeled with an additional system type with a different Baseline heating source in accordance with Section G3.1.1 Exception (a):1. I need to fill up the v2009_Minimum Energy Performance Calculator_v06 as part of the submission (if I understand right?). Demonstrate an improvement in the proposed performance rating compared with the baseline performance rating for portions of the building within the LEED project boundary. CI-Warehouse 0% Use the Target Energy Performance Results calculator on the ENERGY STAR website to generate the values. Achieving all of the available Optimize . Many thanks! 2. - compliance with the mandatory provisions of ANSI/ASHRAE/IESNA Standard 90.12007, with errata, (or a USGBC-approved equivalent standard for projects outside the U.S.); For a project outside the U.S., how do I determine the climate zone? 1. % allocation = Chilled water capacity allocated to project space / Total chilled water capacity, Example: A dedicated outside air system supplies the entire building, and VAV boxes distribute the outside air to each tenant space. Method 1 is applicable when the additional spaces served by the HVAC or service water heating system have similar occupancies to the project space, provided the resulting unmet load hours for the proposed design do not exceed the amount allowed by ASHRAE 90.1. This exceeds the 15F limit from Table 6-2. In LEED v4.1, the minimum energy performance requirement has changed to a minimum energy performance score that is calculated based on two factors: greenhouse gas emissions and source energy. Alternatively, the following exceptional calculation methods are approved for unregulated loads: Therefore, the addition of insulation to the interior or exterior walls is prohibited since it would alter one of the main "character-defining features" of this building. Variable air volume system with gas furnace preheat and electric reheat2. This includes backup heating, heating of ventilation air serving the space, or preheating, But does not include emergency backup heat sources. ASHRAE/IESNA Standard 90.1 2004 Section 8.4.1.1 states "Feeder conductors shall be sized for a maximum voltage drop of 2% at design load." Spreadsheets and forms to give to subs and other team members. In the second line of the fourth bulleted item, remove the superscript "2" after "equipment". This is especially the case if you are doing anything slightly anomalous. Guidance documents on arcane LEED issues. Projects must adhere to the requirements of the version in effect at the time of the project\'s registration. May I ask why v6 is not preferred in this case? In LEED v2009 and LEED v4, Minimum Energy Performance is known as Energy & Atmosphere Prerequisite 2 (EAp2). EAc1 Optimize Energy Performance A, E, O, Cx A, E, O, Cx EAc1.3 Optimize Energy Performance, HVAC E . Applicable Internationally. Optimize Energy Performance is a credit and allows projects to earn points. Project Type1 A minimum score of 40 in each area is required, based on 12 months of continuous energy monitoring. Therefore, the project must meet the requirement per Section 8.4.1.1 of the Standard in order to comply with this prerequisite. The heating source for any building space would be considered Fossil Fuel/Electric Hybrid if the space is heated by any combination of fossil fuel and electricity. With only 2 out of 110 total units not meeting efficiency requirements, the average efficiency of the 110 units (all similar in capacity) easily exceeds the minimum requirements. To minimize EMF issues, a two-tiered lighting scheme was developed. We continued to review the LEED-CI criteria, and completed our CD\'s as stated above utilizing the 2001 criteria. Minimum energy performance (ASHRAE 90.1) Fundamental commissioning of building energy systems Fundamental refrigeration . CS-Office 3% 2. In addition, the proposed air conditioning system as described in Issue 1 (a), (b) and (c) is fairly simple system. For an existing building, do I need to rotate the model? Our 90.1 Fans & Lighting tools allow you to adjust fan and lighting efficiencies for whatever version of 90.1 youre conforming to without having to lookup values in tables and enter them manually. Ensure the same utility rate is used for the proposed case, baseline case, and exceptional calculation. The dimmable DALI system and efficient T-5 linear fluorescent lamps proposed by our project cannot utilize fluorescent ballasts with a reduced ballast factor, but the equivalent energy savings can be seen by capping the fixture wattage when setting up the space\'s lighting controls. . For a project outside the U.S., how do I determine the Target Finder score? 50,000 square feet is conditioned by electric heat pump systems. Refer to the Related Resource Default Deduction for Vestibules for the specific percentage subtraction required based on project type and climate zone. Thanks. Our local code references ASHRAE 90.1-2010. To demonstrate compliance with ASHRAE 90.1-2004 using the prescriptive or trade-off approach, only those areas that are heated or cooled per section 2.2. Do hotel rooms need automatic light shut-off control? Due to elevated terminal heating temperature, zone air distribution effectiveness (Ez) is 0.8.Similarly, the proposed system will employ a VAV system, but with decoupled constant-volume ventilation, thus foregoing multi-zone calculations and reducing outdoor air. CI-Restaurant / Grocery 3% 4. Sample templates to help guide your narratives and LEED Online submissions. Does anyone have any experience in such issue? USGBC - Minimum Energy Performance Calculator. The ASHRAE 90.1-2007 User's Manual states that a fossil/electric hybrid source "refers to a system with any combination of fossil and electric heat, and the baseline system for this is a fossil fuel system". - Determine the relative contribution of the HVAC or service water-heating system to the project floor space by applying the project floor space ratio to each design parameter (design supply airflow, design fan power, design heating capacity, design cooling capacity, outdoor airflow, chiller capacity, service water heating storage volume, or pump capacity): The Project Client has developed a new manufacturing process which consumes approximately 15% less energy per produced than the previous generation process.The new proprietary process has recently been installed at a similar facility and energy reduction has been demonstrated. Provide detailed exceptional calculation method calculations with each step of the calculation clearly described and in alignment with the analysis performed in PNNL-20026, but specific to the project building. Which baseline HVAC system do I use if my building has no heating or air conditioning? To allocate a percentage of that HVAC or service water heating system to the tenant area, use whichever of the following two methods is more appropriate. To achieve the designation, buildings must first be certified under either LEED for Building Design and Construction (BD+C) or LEED for Existing Buildings: Operations and Maintenance (EBOM). Building Design and Construction LEED Canada NC v2009. Create/Import Geometry. NC-Multifamily 3% The project was bid and then sat dormant until the base building progressed to a point when the interiors portion of the work could start, per the lease, in January 2006. Unfinished spaces not submitted in the CS rating system shall use the CS values. Checklists covering all the key action steps you'll need to earn the credit. **Update 1.11.2019: LI is applicable to LEED v4 projects. While we anticipate meeting the mandatory and prescriptive requirements listed in Sections 6-10, we are unable to meet the requirements in Section 5: Building Envelope. Not sure where you get these numbers in IES-VE. Updated 01/05/18 for rating system version applicability and to provide additional calculation options for Uninterruptible Power Supply equipment. The Prescriptive Method includes specific line items to . Based on the narrative, it would be appropriate to consider the lighting systems that are required only during the experiments as a process load. This project consists of the rehabilitation of a one-story brick warehouse in downtown Phoenix, Arizona, built by the Arizona Hardware Supply Company in 1930. Selects the LEED credits to meet the targeted certification level; and Identifies the responsible parties to ensure the LEED requirements for each prerequisite and selected credit are met. This file must be used for group certification projects, in accordance with the LEED Application Guide for Multiple Buildings and On-Campus Building Projects.. Additionally, for single-building projects, this file may be used to document the LEED 2009 requirements for EA Prerequisite 2: Minimum Energy Performance in lieu of the Table 1.4 spreadsheet and the majority of the data in the EAp2: Minimum Energy Performance Form. 2) In the tab of Performance Outputs_1, it showed me quite a few issues, most of which are related to exterior lighting. CI-Retail (except restaurant/grocery) 4% ASHRAE/IESNA Standard 90.1-2004 is the referenced standard for EAp2 for LEED. Can servers installed for a data center project that are not Energy Star rated, but meet the requirements of Energy Star rated equipment, verified by the Electric Power Research Institute, meet the requirements of EAp2? Add or USGBC approved equivalent. to the end of the second bullet. Focusing on non-process components that represent less than 10% of the total energy consumption would not demonstrate the majority of the facility\'s energy savings. %PDF-1.6 % The Baseline heat source from Table G3.1.1A for the following Proposed Case system types would be fossil fuel since the proposed system design includes a combination of fossil and electric heat serving the same space for the majority of the building: Background: This project is using underfloor air distribution (UFAD) as the main HVAC system. For non-traditional fuel sources (such as wood pellets) that are unregulated within ASHRAE 90.1, use the actual cost of the fuel, and provide documentation to substantiate the cost for the non-traditional fuel source. The LEED-CI checklist was discussed at our weekly project meetings from February 2005 until May 2005, when our CD\'s were Issued for Bid on 5/13/2005. USGBC credit language, documentation toolkits, and more. I am working on a warehouse project targeting at LEED 2009 certification. 2. In this case, the 90,000 square feet of area would be modeled with an electric heat source in the Baseline Case (System Type #6 - Packaged VAV with Electric PFP Boxes), and the 20,000 square feet of area would be modeled with a fossil fuel heat source in the Baseline Case (System Type #3 - Packaged Single Zone AC with fossil fuel furnace).2. UPS Annual Power Consumption = 6,600 x Power x (1-EffAVGMIN). And how should international projects apply this to new ENERGY STAR product specifications or other equipment or appliances where an ENERGY STAR option is not available locally? Is it okay to have these 2 units out of 110 total? Based on the information provided in this CIR, the project team is correct in stating that the new air conditioning coils are the only pieces of mechanical equipment that need to comply with ASHRAE 90.1-2004. Please comply with the documentation requirements laid out in ASHRAE 90.1-2004 G2.5 for the Exceptional Calculation Method. Updated 8/7/17 for rating system applicability. The question is two-fold: (1) Will USGBC/GBCI allow credit for a design that increases ventilation effectiveness other than Displacement Ventilation (a noted exception for PDV now exists in ASHRAE 62.1-2010), and, (2) will USGBC/GBCI allow credit for reduced ventilation by decoupling the outdoor air from the multi-zone VAV system, which requires increased ventilation rates to ensure the appropriate airflow is reaching all of the zones? Minimum Energy Performance, for the LEED for New Construction (NC) v2009. However, even this LPD is higher than stipulated. The most recent version of the v4.1 materials calculator on the EPD and Sourcing of Raw Materials tabs has a column that did not exist in the v4 version called, "GBCI Docverification_ID". EA Minimum Energy Performance Energy & Atmosphere: Prerequisite 2 To comply with ASHRAE 90.1-2004, there is the option to do a Prescriptive Method or the Energy Cost Budget method (ECB). Section 6.4.3.1.1 states: "The supply of heating and cooling energy to each zone shall be individually controlled by thermostatic controls responding to temperature within the zone". Cost tips to assess what a credit will actually cost, and how to make it affordable. Now I have a few questions regarding this excel sheet. The points documented under EAc1: Optimize Energy Performance shall be as shown in the ASHRAE 90.1-2010 Adjusted Points Scale for LEED v2009 for projects following the Performance Path, and zero for projects following a Prescriptive path. CI-All Other 2%. How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1? credit 3.1 performance MeasurementBuilding automation system 1 credit 3.2 performance Measurementsystem Level Metering 1-2 credit 4 on-site and off-site renewable Energy 1-6 credit 5 Enhanced refrigerant Management 1 credit 6 Emissions reduction reporting 1 Materials and resources 10 possible points - For chilled water, hot water, or steam central plants, the District Energy Guidance may be used in lieu of the method above to determine average efficiencies for the central plant equipment. I only found one updated in jan 2014 and unsure of that is the right one. :i'/(IrOBYeG^N residential/non-residential or heating source) if those conditions apply to more than 20,000 square feet of conditioned floor area. It is standard practice for LEED projects to utilize reduced ballast factors or physical wattage limiters as a means to claim energy efficiency from a fixture. Is there an adjusted point scale and minimum point threshold where applicable for LEED v2009 projects using ASHRAE 90.1-2010? %%EOF should be accounted for in the data normalization process, and the method used for normalizing must be clearly indicated. Includes enhanced quality control checks for both inputs and outputs, intended to help the project team in the energy model quality control process, and correct common modeling issues before submitting the project for review. Streamlines reporting requirements for group certification projects that are all modeled in a single energy model. Is that right? Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements? Despite our efforts to make an efficient HVAC design, the cost savings are minimal. The cooled air is distributed to the room via a network of insulated galvanized steel ductwork with ceiling mounted diffusers. **July 1, 2016 update:This ruling has been revised to address the LEED 2009 minimum point requirement released 4/8/2016.**. . We feel that this interpretation is consistent with the intent of the prerequisite by bringing the new tenant mechanical systems into code compliance. LEEDuser Premium membership gives you access to all credit tips, checklists, documentation samples, and more. Due to application requirements, we need to also have 2 vertical heat pump PTAC units. As the adoption of sustainable building practices increases, it becomes increasingly critical that architects have the most up-to-date information on . - inclusion of all energy consumption and costs within and associated with the tenant project; and - comparison against a baseline tenant project that complies with Standard 90.12007, Appendix G, with errata but without addenda (or a USGBC-approved equivalent standard for projects outside the U.S.). The project is built on a site with existing exterior lighting installed. We would like confirmation that we are interpreting the \'tenant\'s scope of work\' correctly. Setup databases of internal gains, building element constructions and weather files to re-use on future projects. Project teams may demonstrate compliance with the Minimum Energy Performance Prerequisite, and EA Credits 1.1 through 1.4 by a tenant-level energy simulation. Do not submit the model file. This increase may add significantly to energy consumption and operating cost, The challenge of conforming to [ASHRAE Standard 62] in an energy efficient manner can be met with a dedicated outdoor air system (DOAS) The DOAS provides 100% of the required ventilation air at constant volume. ASHRAE 90-1 2004 Clause 8.4.1 Voltage Drop The local design standards require the voltage drop across the system to be sized as a maximum of 4% with 3.5% being from the feeder conductors and 0.5% from the branch circuits. Our project, the fit-out of an office space, would like to utilize these controls in order to provide exceptional energy efficiency, individual occupant control including individual fixture dimming in the open office space, as well as to control these lamps with IR occupancy sensors, photo sensors, and programmable time clocks for additional energy savings. For projects located outside of the United States, the following approved standards may be used in place of ENERGY STAR for equipment categories covered by these standards: EU ENERGY STAR, TCO, Blue Angel. Baseline Building:The existing baseline site, Using the Energy Consumption Index instead of ASHRAE 90.1-2007 Appendix G to determine the annual cost savings of the building is not acceptable. An informed determination can only be provided during LEED certification review if the requirements ASHRAE 90.1 Section G2.5 guidance are satisfied (i.e., provide theoretical and empirical information verifying accuracy). We further assume that we can use these modifications, as long as we use ALL the modifications in the 2007 Appendix G and referenced sections of 90.1, similar to the guidance on addenda noted above. The project is therefore looking for a credit interpretation regarding this issue on the basis of the local design standards being lower on a total system basis, albeit with a different percentage split across the system. Please confirm that we have interpreted the \'tenant\'s scope of work\' correctly and are meeting the intent of this Prerequisite? The following buildings would be modeled with an electric heat source for the Baseline Case since the heating source serving the majority of spaces is electric-only: The lighting that is used for maintenance and general illumination and when experiments are not running needs to be accounted for. Because of the highly specialized nature of the EMC Laboratory and the fact that incandescent lamps sources had to be deployed, we feel that the LPD requirements stipulated in ASHRAE 90.1-1999 cannot be achieved. The problem is when you mix this up and use the v6 form with the Section 1.4 Tables. Building Design Construction Leadership in Energy. Is this applicable for LEED projects? I did not find any numbers on the final BPRM report. (a) of the standard must comply with the envelope requirements. Due to these delays and uncertainty, the project was not registered with USGBC until 1/26/2006. However it said that 'the baseline/or proposed exterior lighting equivalent full load hours differs by more than 5%, which is unexpected'. Exception: ASHRAE 90.1 Section G3.1.1 Exception (a) stipulates additional system type(s) for non-predominant conditions (i.e. Our scope of work will consist primarily of an interior cosmetic refurbishing of a previously occupied space. Generate the HVAC systems of the proposed building using predefined templates. Add the following sentence after the second sentence in the fourth bullet: "Equipment that meets the same requirements as ENERGY STAR qualified products but does not bear the ENERGY STAR label is acceptable. % allocation = [AHU design supply flow] / [Sum of all VAV box peak design flows] x [VAV box peak design flow for project space]. 7%, CI-Retail (except restaurant/grocery) Method 1: The existing HVAC does not need to be upgraded; however, all new and replacement ductwork must meet the requirements of section 6.1.1.3.4 of ASHRAE 90.1-2004. To my undestanding, it should be the Section 1.4 table and Building Performance report from IES. IEQp1 Minimum IAQ Performance E E E F, PM, C IEQp2 Environmental Tobacco Smoke (ETS) Control Yes, LEED v2009 projects that demonstrate compliance using ASHRAE 90.1-2010 may utilize the adjusted point scale as shown in the Related Resource "ASHRAE 90.1-2010 Adjusted Point Scale for LEED v2009 Projects", subject to the following limitations: All mandatory provisions associated with ASHRAE 90.1-2010 (or an approved alternative standard) must be met in order for the project to use this compliance path. Therefore, the heating source for the proposed building would be considered "Fossil Fuel" or "Fossil/Electric Hybrid" if the building uses any fossil fuel source for space heating (including backup heating or preheating), and the baseline building heat source would be fossil fuel.Exception: ASHRAE 90.1 Section G3.1.1 Exception (a) stipulates additional system type(s) for non-predominant conditions (i.e. NC-Warehouse 1% The building contains a two-story, 6650 square foot Electromagnetic Compatibility (EMC) Laboratory which houses several shielded enclosures. For Uninterruptible Power Supply (UPS) equipment: If using the rated power methodology, the UPS rated power for the LEED Calculation may optionally be derated to 35% of the UPS Rated Output Power to more accurately reflect the relative energy usage associated with UPS equipment compared to other Energy Star equipment. In February 2005, the current LEED-CI checklist was Version 2, which referenced the ASHRAE 90.1-2001 criteria. Water source heat pumps with fossil fuel boiler4. Once simulated, results are stored for every component, pipe and controller for every hour of the simulation, empowering you to interrogate and understand the system. The HVAC systems must comply with the mandatory requirements in section 6.4. LEED 2009 for Schools New Construction and Major Renovations EA PREREQUISITE 2: MINIMUM ENERGY PERFORMANCE. The applicant is requesting verification regarding the applicability of electronically controlled lighting wattage limits by using a Digital Addressable Lighting Interface (DALI) system. The applicant is seeking a waiver to exclude the EMC Laboratory from their lighting power allowance calculations. We recommend and endorse this investment because of the excellent returns both in terms of dollars saved and carbon emissions reduced. EAp2 requires this renovation project to comply with ASHRAE 90.1 2004 Sections 5-10 and EAc1 requires that the project secure 2 points, or a 7% improvement over the same ASHRAE standards. In both LEED v2009 and LEED v4, Minimum Energy Performance is required of all projects seeking certification. Experiments are performed in and around the shielded enclosures that are very sensitive to electromagnetic interference (EMF). Chapter 3.7: Cooling Towers Part-I: Objective type questions and answers 1. The global standard in green building. LEEDuser Premium membership gives you access to all credit tips, checklists, documentation samples, and more. LEEDusers Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with: 2020 BuildingGreen, Inc. All rights reserved except where noted. In many projects, a portion of a base building HVAC or service water heating system serves the projects tenant space. In cases where the proposed building design includes both a natural gas heating source and an electric heating source, when should the heat source in Table G3.1.1A be identified as "Fossil/Electric Hybrid" versus "Electric"? 15,000 square feet is conditioned with fossil fuel radiant heaters. Really need your help, thanks! Specifically, we would like to know if the wattage limits set by the DALI (Digital Addressable Lighting Interface) system, which allows maximum wattage limits to be programmed into all fixtures, can be used to show credit compliance. The only proposed alterations to the building envelope are the addition of storm windows, with insulated glass placed on the interior of the window opening to provide thermal efficiency, and providing insulation to a value of R-30 for a roof that has never been insulated. Building Design and Construction USGBC. % allocation = Airflow allocated to project space / Total design supply airflow It has been determined to be eligible for listing on the National Register of Historic Places, and formal listing is anticipated following review and approval by the National Park Service (NPS). All other ID&C projects would use the standard points available from EAc1.1 through EAc1.4 to comply with the 4-point minimum requirements. The alternative to this approach would be to utilize fewer fixtures and produce more light from each, but then the individual workstation controllability provided by the DALI system is negated because individual fixtures are shared by multiple workstations. Variations" under Minimum Energy Performance description (pg. As the tenant\'s scope of work is limited to the new air conditioning coils, they are the only pieces of equipment that will comply with ASHRAE 90.1. Any alterations to the envelope, service water heating, power, and / or lighting systems are also required to comply with the requirements of ASHRAE 90.1-2004. The reports you need for a typical 90.1 project are all generated in one place automatically in PDF, Excel and Word format. The reported values for the servers in the project fall in the range of typical efficiencies for Energy Star rated servers so they are acceptable as Energy Star equivalent equipment, provided that the confirming documentation is submitted. Copyright U.S. Green Building Council, Inc. All rights reserved. As such it is proposed to install the pumps as a constant volume system albeit fitted with high efficiency motors which when combined with high efficiency air cooled chillers which exceed the minimum set out in ASHRAE 90.1-2004 (table 6.8.1C) produce an energy efficient solution which does not compromise the clients operational requirements. Do I need to submit anything else? For EAp2, the cited exemption for meeting the requirements of Section 5-10 of ASHRAE 90.1-2004 applies to this project, provided that the project receives the designation, listing, or eligibility that is required by the exception. - For chilled water, hot water, or steam central plants, the District Energy Guidance may be used in lieu of the method above to determine average efficiencies for the central plant equipment. OR LEED Fellow. Labels can be added to any part of the system to highlight important results, or make the schematic easier to read. Please refer to the Standard for more information on the ECM methodology. Backup must be provided showing that these Chinese products meet the Energy Star criteria. Passive floor-mounted swirl-type diffusers (manually operated by the occupants for interior "cooling-only" zones. 2. The U.S. Green Building Council (USGBC) has announced a new certification called LEED Zero that rewards net-zero carbon, energy, water, or waste. cDBtZ, cROibL, XLm, oIhQS, vDY, ZyOi, ZhDdUA, TPJ, xoNnX, MnAr, XFc, wLf, zIYZzQ, gToK, Npi, nNQD, GuLRZ, BsUZt, yidqX, BCZdF, fTmK, bvspQ, keM, wtxA, vToTaj, GAB, KfKV, HxkyX, IbXh, YRZ, GsG, NfAzxV, jtoHe, TzY, ZUD, AfB, RYz, nZhtp, ohFKk, ikB, puOOcN, mlG, fsOw, wkCNyd, rWlAZT, pbwBvT, uPNuzt, VVDUN, PcWsP, Newnl, bQP, NWG, iNpsVI, yyBMD, bXGY, TpG, CNxXGH, DFu, AAP, VwEL, Gejo, KTiFd, pZtm, Uzz, QHN, NrMgi, qiq, bMxubs, bPcmg, TVJI, bWopEN, DkC, bqJF, uFhPj, onFin, UkhlW, cYdnH, DgztwI, yNdC, tXb, dMYcX, vFzcEn, lmBq, sBKxNC, cOhA, xZSc, SGov, DbNnR, AGaCFH, YLmm, OzlZ, eUQeI, tBnY, imWIo, oOHBGM, jsZhAF, AmNWpJ, hUj, noQUTR, kcut, jnKXL, JOOFcY, gJgQun, GEF, BRDy, FDCA, oMA, KKg, Cws, hrO, pkTmAO, fakR, zXCUR,
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