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LEED NC Energy and Atmosphere 17 points Slide Editor: James A. Strapko LEED Source: www.intheleed.comwww.intheleed.com.

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Presentation on theme: "LEED NC Energy and Atmosphere 17 points Slide Editor: James A. Strapko LEED Source: www.intheleed.comwww.intheleed.com."— Presentation transcript:

1 LEED NC Energy and Atmosphere 17 points Slide Editor: James A. Strapko LEED Source:

2 Energy & Atmosphere 6 Credits; 17 Points EAPR1: Fundamental Commissioning of Building Energy Systems EAPR2: Minimum Energy Performance EAPR3: Fundamental Refrigerant Management EAc1, (1-10 points): Optimize Energy Performance EAc2, (1-3 points): On-Site Renewable Energy EAc3: Enhanced Commissioning EAc4: Enhanced Refrigerant Management EAc5: Measurement & Verification EAc6: Green Power

3 Energy & Atmosphere 6 Credits; 17 Points EAPR1: F___ C___ of B___ E___ S___ EAPR2: M___ E___ P___ EAPR3: F___ R___ M___ EAc1: O___ E___ P___ EAc2: O___-S___ R___ E___ EAc3: E___ C___ EAc4: E___ R___ M___ EAc5: M___ & V___ EAc6: G___ P___

4 Energy & Atmosphere 6 Credits; 17 Points

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6 EA Prerequisite 1 Fundamental Commissioning of Building Energy Systems

7 EAP1: EA Prerequisite 1 Fundamental Commissioning of Building Energy Systems Intent: Verify that building’s energy related systems are installed, calibrated, and perform according to the following criteria – BOD (Basis of Design), – OPR (Owner’s Project Requirements) – Construction Documents Implementation: (UPDATED!) Designate a Commissioning Authority (CxA) to lead, review, and oversee completion of commissioning process – Experienced in two similar projects – Independent person – For projects less that 50,000 SF, commissioning can be done by design or construction team member

8 EAP1: EA Prerequisite 1 Fundamental Commissioning of Building Energy Systems Implementation, continued: 6 Requirements of CxA, Commissioning Authority Review the BOD (Basis of Design) & OPR (Owner’s Project Requirements) Develop a Commissioning Plan Include in construction documents commissioning requirements Verify the Installation & Performance of Systems Report results and findings to Owner Complete a summary with the report Commissioned Systems Include: HVAC Lighting Renewable Energy Domestic Hot Water Code: none Submittal Phase: construction Extra Credit: none

9 EA Prerequisite P2 Minimum Energy Performance

10 EAP2: EA Prerequisite 2 Minimum Energy Performance Intent: Establish minimum level of energy efficiency for building system. Implementation: option 1: Building envelope and system to comply with ASHRAE / IESNA Sections Comply with prescriptive requirements of ASHRAE, option 2: Comply with local codes or DOE (Department of Energy), instead of ASHRAE Mandatory: provide occupancy controls for: – class rooms – meeting rooms – break rooms Code: ASHRAE / IESNA Local Codes DOE (Department of Energy) Submittal Phase: Design Extra Credit: none

11 EAP2: EA Prerequisite 2 Minimum Energy Performance ASHRAE / IESNA Sections

12 EAP2: EA Prerequisite 2 Minimum Energy Performance

13 EA Prerequisite P3 Fundamental Refrigerant Management

14 EAP3: EA Prerequisite 3 Fundamental Refrigerant Management Intent: Reduce ozone depletion. Implementation: New Building: Zero use of CFC-based refrigerants in HVAC systems Existing Building: Consider replacement or “phase-out” program for HVAC units and fire systems with CFCs. CFC production stopped in 1995 and was phased out 5 years after that. Existing mechanical systems connected to existing chilled water systems have to be CFC-free. notes: – ODP: ozone depletion potential – GWP: global warming potential Specify new HVAC equipment that uses NO CFC REFRIGERANTS Code: EPA Montreal Protocol Submittal Phase: design Extra Credit: none

15 EAP3: EA Prerequisite 3 Fundamental Refrigerant Management

16 EA Credit 1 Optimize Energy Performance

17 EA Credit 1: 1-10 Points Optimize Energy Performance

18 Intent: Achieve increasing levels of energy performance above the baseline in the prerequisite. Reduce environmental and economic impacts associated with building energy usage. Implementation: Methods of optimizing energy performance: – Reduce building footprint – Reduce demand – Provide sensors in: for break rooms class rooms meeting/conference rooms – Harvest Energy Building Orientation Window Location Natural Ventilation – Improve Efficiency through design of HVAC, lighting, and building envelope – Recover Waste Energy Exhaust Air Energy Graywater Heat Cogeneration

19 EA Credit 1: 1-10 Points Optimize Energy Performance OPTION 1: WHOLE BUILDING ENERGY SIMULATION (1 to 10 points possible) New Buildings: – demonstrate percentage of improvement in proposed building performance rating compared to baseline performance rating per Building Performance Rating method in Appendix G in ASHRAE / IESNA – 1 point at 10.5% improvement, then 1 additional point for each 3.5% after that. (10 points max!) Existing Buildings: – same as new buildings, except 1 point at 3.5%, then 1 additional point for each 3.5% after that. (10 points max!) For Calculations: INCLUDE ALL ENERGY COSTS Compare to a baseline (model simulation) Provide 4 orientation simulations for baseline modeling. updated: since June 2007: Projects pursuing option 1 attempt at least 2 points (14 or 7 points).

20 EA Credit 1: 1-10 Points Optimize Energy Performance

21 OPTION 2: PRESCRIPTIVE COMPLIANCE PATH: "Design Guide for Small Office Buildings" (4 points possible) Comply with ASHRAE "Guide for Small Office Buildings" Building must be less than 20,000 SF with office occupancy For Calculations: NOT energy costs, but use CLIMATE ZONE factor OPTION 3: PRESCRIPTIVE COMPLIANCE PATH: "Core Performance Guide" (2-5 points possible) Comply with Advanced Buildings Core Performance Guide sections 1 & 2 Buildings must be LESS than 100,000 sq. ft. Buildings may NOT be healthcare, warehouse or laboratories MINIMUM points achievable (2 to 3 points) 3 points for office, school, public assembly and retail 2 points for all other project types Additional points achievable (up to 2 additional points) Up to 2 points for projects that implement section 3: enhanced performance – 1 point for every 3 strategies implemented – DO NOT count the following sections: – 3.1: cool roofs – 3.8: night venting – 3.13: additional commissioning

22 EA Credit 1: 1-10 Points Optimize Energy Performance

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24 OPTION 4: PRESCRIPTIVE COMPLIANCE PATH: "Benchmark version 1.1" (1 possible) – updated: since June projects may NO LONGER use this option – comply with ASHRAE Benchmark v1.1 – This is just here for your information THIS IS ACCORDING TO THE THIRD EDITION OF THE REFERENCE GUIDE FROM OCTOBER 2007 PLEASE SEE the ERRATA SHEET for updates to this credit since the earlier editions.ERRATA SHEET Code: ASHRAE / IESNA (option 1) ASHRAE Guide for Small Office Buildings (option 2) ASHRAE Core Performance Guide (option 3) ASHRAE Benchmark v.1.1 (option 4) Submittal Phase: design Extra Credit: none

25 EA Credit 2 On Site Renewable Energy

26 EA Credit 2: 1-3 Points On Site Renewable Energy

27 Intent: Increase on-site renewable energy self supply Reduce environmental and economic impacts associated with fossil fuel use Offset building energy costs Implementation: ELIGIBLE TYPES OF RENEWABLE ENERGY: – Solar – Photo-voltaic – Wind – Geothermal heating and electric – Biomass – Bio-gas – Low-Impact Hydro Electric

28 EA Credit 2: 1-3 Points On Site Renewable Energy Implementation: NON-ELIGIBLE TYPES OF RENEWABLE ENERGY: – Architectural features – Passive solar – Daylighting – Geo-exchange (ground source heat pumps) – Green-power from off site To gain points: achieve savings in building annual energy cost savings – 2.5% = 1 point – 7.5% = 2 points – 12.5% = 3 points (max) Codes: DOE (Department of Energy) CBECS (Commercial Building Energy Consumption Survey) Submittal Phase: Design Extra Credit: (earned under ID, Innovative Design, not “exemplary performance”) Gain 1 additional point for 17.5% through ID, Innovative Design. (3 EA + 1 ID = 4 total)

29 EA Credit 3 Enhanced Commissioning

30 EA Credit 3: 1 Point Enhanced Commissioning Intent: To begin commissioning process early during design process Execute additional activities after systems performance verification is completed Implementation: In addition to prerequisite commissioning (EAp1):EAp1 – designate CxA (commissioning authority) to lead/review/oversee completion of all commissioning process activities – CxA must REVIEW OPR (Owner’s Project’s Requirements), BOD (Basis of Design), and Design Documents prior to 50% CD. – CxA shall REVIEW SUBMITTALS for compliance with OPR and BOD. – Develop a SYSTEMS MANUAL for operating staff – Verify that requirements for TRAINING STAFF & OCCUPANTS are completed – REVIEW BUILDING OPERATION 8-10 months AFTER SUBSTANTIAL COMPLETION Code: none Submittal Phase: construction Extra Credit: none

31 EA Credit 4 Enhanced Refrigerant Management

32 EA Credit 4: 1 Point Enhanced Refrigerant Management Intent: Reduce Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) Support early compliance with EPA Montreal Protocol Implmentation: Quick Information: – refrigerant comparison CFC (high) HCFC (medium) HFC (low) – efficiency of HFC is less than HCFC OPTION 1: do not use ANY refrigerants OPTION 2: use refrigerants and HVAC that minimizes or eliminates emission of compounds that cause ozone depletion & global warming – do not install fire suppression systems with ozone depleting substances – use natural refrigerants: water, carbon dioxide, ammonia – use refrigerants with low ODP & GWP – minimize Lr (leakage rate) – use equipment with efficient Rc (refrigerant charge) – use equipment with “long service life“

33 EA Credit 4: 1 Point Enhanced Refrigerant Management

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38 Code: Clean Air Act 1990 EPA Montreal Protocol 1987 Submittal Phase: design Extra Credit: none

39 EA Credit 5 Measurement & Verification

40 EA Credit 5: 1 Point Measurement & Verification Intent: Provide for the ongoing accountability of building energy consumption over time. Basically, develop a plan to measure and check the building’s energy consumption. Implementation: Note: there are 4 options in the protocol, but for LEED we only look at 2, B and D. Develop and implement a Measurement and Verification (M&V) Plan consistent with: – OPTION B (smaller buildings): Energy Conservation measure isolation - for isolating main energy systems as specified in IPMVP (International Performance Measurement & Verification Protocol) & EMS (Energy Management System) – OPTION D (whole building systems): Calibrated Simulation - for buildings with interactive systems measurement and verification shall cover a period of no less than 1 year of post- construction occupancy Code: IPMVP (International Performance Measurement & Verification Protocol) Submittal Phase: construction Extra Credit: none

41 EA Credit 6 Green Power

42 EA Credit 6: 1 Point Green Power Intent: Encourage development and use of grid-source renewable energy technologies for NET ZERO pollution basis. Implementation: TYPES OF RENEWABLE ENERGY (as defined by the CRS - Center for Resource Solutions): – Solar – Photo-voltaic – Wind – Geothermal heating and electric – Biomass – Bio-gas – Low-Impact Hydro Electric Determine BASELINE electricity use from: – consumption based on EA1 - Optimize Energy PerformanceEA1 - Optimize Energy Performance – use DOE (Department of Energy) CBECS (Commercial Building Energy Consumption Survey)

43 EA Credit 6: 1 Point Green Power Implementation, continued: CASE 1: in states with an OPEN electrical market – select 35% GREEN-E certified power provider with 2 year contract. CASE 2: in states with CLOSED electrical market – enroll in Green Power Program for 35% of the electrical energy CASE3: where green power is NOT available – purchase RECs (tradeable Renewable Certificates) purchase quantity of RECs equivalent to 35% of predicted annual electrical consumption for 2 year period (this equals 70% of projected annual electrical consumption if all RECs are purchased at one time) Code: CRS (Center for Resource Solutions) - Green-eProduct Certification Requirements DOE (Department of Energy) CBECS (Commercial Building Energy Consumption Survey) Submittal Phase: construction Extra Credit: purchase 70% GREEN-E certified power (instead of 35%)

44 Energy & Atmosphere 6 Credits; 17 Points EAPR1: EAPR2: EAPR3: EAc1: EAc2: EAc3: EAc4: EAc5: EAc6:

45 LEED NC Energy and Atmosphere 17 points Slide Editor: James A. Strapko LEED Source:


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