LEED CERTIFICATION- REQUIREMENTS FOR EA CREDIT: OPTIMIZE ENERGY PERFORMANCE
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)
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.
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 184.108.40.206 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, CS||Points BD+C (except Schools, Healthcare)||Points Healthcare||Points Schools|
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 Healthcare||Points Schools|
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)