LEED CERTIFICATION- REQUIREMENTS FOR EA CREDIT: OPTIMIZE ENERGY PERFORMANCE

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Intent

To achieve increasing levels of energy performance beyond the prerequisite standard to reduce environmental and economic harms associated with excessive energy use.

Total No. of Possible Points – (1- 20 point)

This credit applies to-

New Construction (1–18 points), Core & Shell (1–18 points),Schools (1–16 points),Retail (1–18 points),Data Centers (1–18 points),Warehouses & Distribution Centers (1–18 points),Hospitality (1–18 points),Healthcare (1–20 points)

Requirements

NC, CS, SCHOOLS, RETAIL, WAREHOUSES & DISTRIBUTION CENTERS, HOSPITALITY, HEALTHCARE

Establish an energy performance target no later than the schematic design phase.

Analyze efficiency measures during the design process and account for the results in design decision making.

Use energy simulation of efficiency opportunities, past energy simulation analyses for similar buildings, or published data (e.g., Advanced Energy Design Guides) from analyses for similar buildings.

Analyze efficiency measures, focusing on load reduction and HVAC-related

Choose one of the options below.

[embeddoc url=”http://dcsgroups.in/temp/wp-content/uploads/2020/04/EA-ppt.pptx” download=”all” viewer=”microsoft”]

Option 1. Energy Performance Compliance (1–18 points except Schools and Healthcare, 1–16 points Schools, 1–20 points Healthcare)

Demonstrate a Performance Cost Index (PCI)1 below the Performance Cost Index Target (PCIt) calculated in accordance with Section 4.2.1.1 of ANSI/ASHRAE/IESNA Standard 90.1-2016, Appendix G

Calculate the PCI, PCIt, and percentage improvement using metrics of cost and greenhouse gas (GHG) emissions.

For project percent improvement for the cost metric, on-site renewable energy may be subtracted from proposed energy cost prior to calculating proposed building performance per ASHRAE Standard 90.1- 2016 Section G 2.4.1.

Table 1. Points for percentage improvement in energy performance – % Cost PCI below PCIt (1-9 points NC and CS, 1-8 points Schools, 1-10 points Healthcare)

  New Construction  Healthcare, Major Renovation, CSPoints BD+C (except Schools, Healthcare)Points HealthcarePoints Schools
5%2%111
10%5%222
15%10%333
20%15%444
25%20%555
30%25%666
35%30%777
40%35%88 
45%40%998
50%45%EP10EP
 50% EP 

Table 2. Points for percentage improvement in energy performance – % Greenhouse Gas Emissions PCI below PCIt (1-9 points NC, 1-8 points Schools, 1-10 points Healthcare)

  New Construction  Healthcare, Major Renovation, CS,Points BD+C (except Schools, Healthcare)Points HealthcarePoints Schools
5%2%111
10%5%222
16%10%333
24%16%444
32%24%555
40%32%666
50%40%777
65%50%88 
80%65%998
100%80%EP10EP
 100% EP 

Option 2. Prescriptive Compliance: ASHRAE Advanced Energy Design Guide (1–6 points, 1-4 points CS)

Projects must meet the Scope requirements of the applicable AEDGs (or combination of AEDGs for mixed use), and

Projects must use the ASHRAE 90.1-2016 Prescriptive compliance path in EA Prerequisite Minimum Energy Performance.

Implement and document compliance with the applicable recommendations and standards in Chapter 4, Design Strategies and Recommendations by Climate Zone, for the appropriate ASHRAE 50% Advanced Energy Design Guide and climate zone.

Option 3. Systems Optimization (1-4 points)

Projects must use the ASHRAE 90.1-2016 Prescriptive compliance path in EA Prerequisite Minimum Energy Performance, and

Must not have more than 2,000 square feet of data center space, laboratory space, or manufacturing space.

Demonstrate an improvement beyond ASHRAE/ASHRAE/IESNA Standard 90.1–2016, with errata, for the following systems:

  • Interior and Exterior Lighting;
  • Daylight controls; Building envelope;
  • HVAC and service water heating equipment efficiency; and
  • Equipment and appliances.

Option 4. Data Centers only– System Optimization (1-3 points)

Calculate an Overall Systems Design Value as the sum of the maximum design Mechanical Load Component (MLC) and maximum design Electrical Load Component (ELC) in accordance with ASHRAE

Document that the Overall Systems Design value is less than the Maximum Overall Systems Value by:

  • 10% (1 point)
  • 20% (2 points)
  • 30% (3 points)

Collocated data centers: document that the Overall Systems Design value is less than the Maximum Overall Systems Value by:

  • 6% (1 point)
  • 12% (2 points)
  • 18% (3 points)