LEED - Leadership in Energy and Environmental Design Energy and Atmosphere Credits Questions and Answers — Questions and Answers
Question 1: A new office building project is pursuing LEED BD+C certification. To meet the prerequisites for the Energy and Atmosphere (EA) category, which of the following is required?
- Participate in a demand response program.
- Generate at least 5% of the building's energy through on-site renewable sources.
- Perform Fundamental Commissioning and Verification. (Correct answer)
- Purchase 100% Green Power or Renewable Energy Credits (RECs).
Correct answer: Perform Fundamental Commissioning and Verification.
Fundamental Commissioning and Verification is a prerequisite in the LEED v4.1 Energy and Atmosphere (EA) category. Its purpose is to verify that the building's energy-related systems are installed, calibrated, and perform according to the owner's project requirements, basis of design, and construction documents. Demand response, renewable energy generation, and green power purchasing are all credits, not prerequisites, within the EA category.
Question 2: A project team is aiming to maximize points in the Optimize Energy Performance credit under LEED v4.1 BD+C. The latest update to this credit splits the points between which two performance metrics?
- Energy cost savings and on-site renewable energy generation.
- Water efficiency and energy efficiency improvement.
- Energy efficiency improvement and greenhouse gas (GHG) emissions reduction. (Correct answer)
- Peak electricity demand reduction and use of alternative refrigerants.
Correct answer: Energy efficiency improvement and greenhouse gas (GHG) emissions reduction.
LEED v4.1 updated the Optimize Energy Performance credit to award points based on two distinct metrics: energy efficiency improvement (which can be measured by source energy or cost) and greenhouse gas (GHG) emissions reduction. This dual-metric approach places a greater emphasis on decarbonization.
Question 3: Which of the following strategies directly contributes to earning points under the LEED EA credit for Renewable Energy in LEED v4.1?
- Installing a high-efficiency HVAC system.
- Purchasing carbon offsets for 100% of the building's energy use.
- Implementing a comprehensive measurement and verification plan.
- Installing a rooftop photovoltaic (PV) array to supply a portion of the building's electricity. (Correct answer)
Correct answer: Installing a rooftop photovoltaic (PV) array to supply a portion of the building's electricity.
The Renewable Energy credit in LEED v4.1 awards points for using on-site renewable energy systems, such as photovoltaic panels, or procuring renewable energy from off-site sources. High-efficiency HVAC systems contribute to Optimize Energy Performance, carbon offsets were part of a separate credit in older LEED versions that has now been merged, and measurement and verification is related to other credits like Advanced Energy Metering.
Question 4: A project is evaluating its options for refrigerant management to earn points in the Energy and Atmosphere category. To comply with the EA Credit: Enhanced Refrigerant Management, the project team must demonstrate what?
- A complete phase-out of all CFC-based refrigerants.
- That the selected refrigerants have a combined Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below a specified threshold. (Correct answer)
- The use of only natural refrigerants like CO2, ammonia, or hydrocarbons.
- A 50% reduction in the total refrigerant charge compared to a baseline building.
Correct answer: That the selected refrigerants have a combined Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below a specified threshold.
The Enhanced Refrigerant Management credit aims to reduce ozone depletion and minimize direct contributions to climate change. Compliance involves selecting refrigerants and HVAC&R systems that minimize or eliminate the emission of compounds contributing to both issues, which is calculated based on their ODP and GWP values to stay below a required impact threshold. A complete phase-out of CFCs is a prerequisite (Fundamental Refrigerant Management).
Question 5: A developer is building a new data center in a region with a strained electrical grid. To support grid stability and earn a LEED credit, they decide to enroll in a program that allows the utility to temporarily reduce the building's electricity consumption during peak hours. This strategy aligns with which EA credit?
- Optimize Energy Performance.
- Advanced Energy Metering.
- Grid Harmonization (formerly Demand Response). (Correct answer)
- Enhanced Commissioning.
Correct answer: Grid Harmonization (formerly Demand Response).
This scenario describes participation in a demand response program, which is the core of the Grid Harmonization credit (referred to as Demand Response in LEED v4). This credit incentivizes buildings to be responsive to the needs of the electrical grid, helping to increase efficiency and reliability.
Question 6: What is the primary intent of the EA Prerequisite: Minimum Energy Performance for a new construction project under LEED v4.1?
- To ensure the building uses at least 10% renewable energy.
- To establish a minimum level of energy efficiency for the building compared to a baseline. (Correct answer)
- To require the installation of a building automation system.
- To mandate the submetering of all major energy-consuming systems.
Correct answer: To establish a minimum level of energy efficiency for the building compared to a baseline.
The intent of the Minimum Energy Performance prerequisite is to reduce the environmental and economic harms of excessive energy use by achieving a minimum level of energy efficiency. For new construction under the updated LEED v4.1, this typically requires demonstrating a 10% improvement over a baseline building defined by ASHRAE Standard 90.1-2010.
LEED - Leadership in Energy and Environmental Design Energy and Atmosphere Credits Questions and Answers
A new office building project is pursuing LEED BD+C certification.
To meet the prerequisites for the Energy and Atmosphere (EA) category, which of the following is required?