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Utility cost savings in EDGE are calculated based on reductions in resource consumption sourced from the supply grid, as these are the costs directly borne by the building owner. The EDGE User Guide explains:
“Utility cost savings in EDGE are calculated based on the reduction in energy and water consumption from the supply grid, using local tariffs for electricity and water to convert resource savings into financial savings” (EDGE User Guide, Section 2.4: Interpreting EDGE Results). Option D, energy and water consumption from the supply grid, aligns with this definition, focusing on grid-supplied resources. Option A (electricity and water consumption) is partially correct but lacks specificity about the source: “Electricity and water must be grid-supplied to be included in utility cost savings; onsite generation is excluded” (EDGE Methodology Report Version 2.0, Section 4.4: Cost Savings Calculations). Option B (generator fuel and water consumption) is incorrect, as generator fuel is not part of utility cost savings: “Generator fuel costs are not included in utility savings, as EDGE focuses on grid-supplied utilities” (EDGE User Guide, Section 2.4:
Interpreting EDGE Results). Option C (building energy and water consumption) is too broad, including onsite sources: “Building consumption includes all sources, but utility savings are grid-specific” (EDGE Methodology Report Version 2.0, Section 4.4: Cost Savings Calculations). Thus, energy and water from the supply grid (Option D) is the correct basis for utility cost savings.
Reference: EDGE User Guide Version 2.1, Section 2.4: Interpreting EDGE Results; EDGE Methodology Report Version 2.0, Section 4.4: Cost Savings Calculations.

In the CBCI EDGE curriculum, lighting efficiency is a critical strategy for reducing internal loads and lowering overall building energy consumption. Lighting efficacy is measured in lumens per watt, indicating how much visible light is produced for each unit of electrical power consumed. Among the listed options, light emitting diodes, or LEDs, provide the highest efficacy.
Typical performance ranges show that T8 and T5 fluorescent lamps are more efficient than older lighting technologies but generally deliver lower lumens per watt compared to modern LED systems. Compact fluorescent lamps are also more efficient than incandescent lighting but still fall short of the efficacy achieved by LEDs. Contemporary LED fixtures can exceed 100 lumens per watt and in many cases reach significantly higher values depending on product quality and design.
The EDGE software rewards high-efficiency lighting systems because reducing lighting power density directly lowers cooling loads in air-conditioned spaces and decreases total delivered energy consumption.
LEDs also offer additional advantages such as longer lifespan and lower maintenance requirements, further supporting sustainable building design objectives. Therefore, among the listed options, LEDs have the highest efficacy and are the correct answer.

Embodied carbon in EDGE refers to the carbon emissions associated with the production, transportation, and installation of building materials, a key metric for materials efficiency. The EDGE User Guide specifies how this is measured: “In the EDGE software, the embodied carbon of materials is quantified in kilograms of carbon dioxide equivalent (kgCO2), reflecting the total greenhouse gas emissions associated with the material’ s lifecycle, from extraction to installation”(EDGE User Guide, Section 7.2: Materials Efficiency Measures).
Option A, kgCO2, directly matches this unit, as EDGE uses kgCO2 to standardize carbon emissions across materials, allowing for comparison and aggregation in the software’s results. Option B (MJ) is incorrect, as MJ (megajoules) measures embodied energy, not carbon: “Embodied energy in EDGE is measured in MJ, representing the energy consumed in material production, while embodied carbon is separately calculated in kgCO2 to assess environmental impact” (EDGE Methodology Report Version 2.0, Section 6.1: Embodied Energy in Materials). Option C (BTU) is also incorrect, as BTU (British Thermal Units) is an energy unit not used in EDGE for carbon calculations: “EDGE uses metric units like MJ for energy and kgCO2 for carbon; BTU is not a standard unit in the software” (EDGE User Guide, Section 2.3: Using the EDGE App). Option D (kWh) is another energy unit, typically used for operational energy, not embodied carbon: “kWh is used in EDGE to measure operational energy consumption, such as electricity use, but not for embodied carbon, which is always in kgCO2” (EDGE Methodology Report Version 2.0, Section 5.2: Energy Calculation Methods). The EDGE User Guide further clarifies: “The software displays embodied carbon in kgCO2 to align with global carbon accounting standards, enabling users to understand the environmental footprint of their material choices” (EDGE User Guide, Section 7.2: Materials Efficiency Measures). The EDGE Methodology Report adds: “For example, concrete might have an embodied carbon of 0.15 kgCO2 per kg, allowing users to compare materials like fly ash concrete versus standard concrete in terms of carbon impact” (EDGE Methodology Report Version 2.0, Section 6.1: Embodied Energy in Materials). Thus, the unit of embodied carbon in EDGE is kgCO2 (Option A).
Reference:EDGE User Guide Version 2.1, Section 7.2: Materials Efficiency Measures, Section 2.3: Using the EDGE App; EDGE Methodology Report Version 2.0, Section 6.1: Embodied Energy in Materials, Section
5.2: Energy Calculation Methods.

The role of an EDGE Auditor during a design audit (Preliminary Certification stage) is to verify compliance with the EDGE standard, which requires at least 20% savings in energy, water, and embodied energy in materials. If the project does not meet the standard, the Auditor must follow specific protocols without overstepping their role. The EDGE Expert and Auditor Protocols outline the acceptable actions: “If a project does not meet the EDGE standard for energy during a design audit, the Auditor should inform the Client of the shortfall and ask them to use the EDGE tool again to identify additional measures that will take the project comfortably over the EDGE standard (e.g., 20% energy savings). The Auditor must not provide design advice or modify the assessment themselves, as their role is to verify, not consult” (EDGE Expert and Auditor Protocols, Section 4.1: Audit Process). Option A, ask the Client to use the EDGE tool again to identify options that will take the project comfortably over the EDGE standard, directly aligns with this guidance, as it keeps the Auditor in a verification role while encouraging the Client to revise their design. Option B (contact the design team directly to work with them) is incorrect, as it violates the Auditor’s independence: “The Auditor must not engage directly with the design team to improve the project, as this constitutes consultancy, which conflicts with their role as an independent verifier” (EDGE Expert and Auditor Protocols, Section 2.3:
Conflict of Interest). Option C (take no further action) is also incorrect, as the Auditor has a responsibility to report the shortfall: “If a project does not meet the EDGE standard, the Auditor must document the failure in the audit report and inform the Client, rather than abandoning the process” (EDGE Certification Protocol, Section 3.2: Audit Requirements). Option D (provide a list of measures based on the Auditor’s experience) oversteps the Auditor’s role by offering consultancy: “The Auditor cannot provide specific design recommendations or measures, as this compromises their impartiality; they must direct the Client to use the EDGE software or consult an EDGE Expert” (EDGE Expert and Auditor Protocols, Section 2.3: Conflict of Interest). The EDGE User Guide further supports: “During a design audit, the Auditor’s role is to assess compliance, not to guide the design process; if the project falls short, the Client should revisit the EDGE tool to explore additional measures, potentially with the help of an EDGE Expert” (EDGE User Guide, Section
6.5: Working with EDGE Auditors). The EDGE Certification Protocol adds: “The Auditor’s report should note the energy shortfall and recommend that the Client revise the self-assessment to meet the 20% savings threshold, ensuring the process remains Client-driven” (EDGE Certification Protocol, Section 3.2: Audit Requirements). Thus, asking the Client to use the EDGE tool again (Option A) is the acceptable course of action.
Reference:EDGE Expert and Auditor Protocols, Section 4.1: Audit Process, Section 2.3: Conflict of Interest; EDGE Certification Protocol, Section 3.2: Audit Requirements; EDGE User Guide Version 2.1, Section 6.5:
Working with EDGE Auditors.

The eligibility criteria for becoming an EDGE Expert are designed to ensure candidates have sufficient background to advise on green building projects. The EDGE Expert and Auditor Protocols specify the requirements for candidates without a construction-related higher qualification: “Applicants without a higher education qualification in a construction-related field (e.g., architecture, engineering) must have a higher education qualification in any field plus at least three years of experience in the construction industry as a skilled professional or tradesperson to qualify for EDGE Expert training and certification” (EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria). Option C, at least 3 years, directly matches this requirement. Option A (at least 1 year) and Option B (at least 2 years) are insufficient, as they fall below the minimum threshold: “Less than three years of experience does not meet the eligibility criteria for candidates without a construction-related degree, as this duration ensures adequate practical knowledge of building design and construction processes” (EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria).
Option D (at least 5 years) exceeds the minimum requirement, which is not necessary: “While additional experience is beneficial, the minimum requirement for EDGE Expert eligibility is three years for non- construction degree holders” (EDGE User Guide, Section 6.4: Working with EDGE Experts). The EDGE Certification Protocol also notes: “The three-year experience requirement for non-construction graduates ensures that EDGE Experts have sufficient industry exposure to provide meaningful consultancy, balancing accessibility with competence” (EDGE Certification Protocol, Section 1.3: Program Structure). Additionally, the EDGE User Guide clarifies: “Candidates with a construction-related degree are exempt from the experience requirement, but those without such a degree must demonstrate at least three years of relevant experience to qualify for the EDGE Expert exam” (EDGE User Guide, Section 6.4: Working with EDGE Experts). Therefore, at least 3 years of experience (Option C) is required for applicantswithout a construction- related higher qualification.
Reference:EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria; EDGE Certification Protocol, Section 1.3: Program Structure; EDGE User Guide Version 2.1, Section 6.4: Working with EDGE Experts.

Increasing the glazing area in an office building affects various aspects of energy consumption due to changes in heat gain, heat loss, and natural light availability, but it does not influence all buildingsystems. The EDGE User Guide explains the impacts of glazing: “Increasing the glazing area (window-to-wall ratio, WWR) in an office building typically increases cooling demand due to higher solar heat gain, increases heating demand in colder climates due to greater heat loss through windows, and reduces lighting energy by allowing more natural daylight, assuming proper daylighting design” (EDGE User Guide, Section 3.5: Passive Design Strategies). Option A (cooling demand) is affected, as more glazing increases solar heat gain: “Higher WWR leads to greater cooling loads in hot climates due to increased solar radiation entering the building” (EDGE Methodology Report Version 2.0, Section 5.2: Energy Calculation Methods). Option B (heating demand) is also impacted, particularly in cooler climates: “Larger glazing areas increase heat loss in cold climates, raising heating demand due to the lower thermal resistance of windows compared to walls” (EDGE User Guide, Section 4.1: Insulation Measures). Option C (lighting energy) is affected, as more glazing can reduce the need for artificial lighting: “Increased glazing can lower lighting energy by enhancing daylight penetration, provided glare is controlled” (EDGE User Guide, Section 4.4: Lighting Efficiency Measures). However, Option D (hot water demand) is not impacted by glazing area, as hot water use is tied to occupant activities (e.
g., showers, cleaning) rather than building envelope design: “Hot water demand in EDGE is determined by occupant use patterns, such as the number of showers or laundry cycles, and is not influenced by glazing area or WWR” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). The EDGE User Guide further confirms: “Glazing area impacts energy-related metrics like cooling, heating, and lighting, but has no direct effect on hot water demand, which is calculated separately based on usage assumptions” (EDGE User Guide, Section 5.2: Water Efficiency Measures). Therefore, increasing glazing area does not impact hot water demand (Option D).
Reference:EDGE User Guide Version 2.1, Section 3.5: Passive Design Strategies, Section 4.1: Insulation Measures, Section 4.4: Lighting Efficiency Measures, Section 5.2: Water Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.2: Energy Calculation Methods, Section 4.2: Water Savings Calculations.

The EDGE software’s Base Case is a standardized benchmark that does not adjust to project-specific corporate standards but reflects local norms. The EDGE User Guide states: “The Base Case in EDGE software is automatically generated based on local typical building practices and, where applicable, national building codes for the selected typology and location. It does not incorporate project-specific corporate standards or custom specifications, ensuring a consistent baseline for comparison” (EDGE User Guide, Section 2.3: Using the EDGE App). In this scenario, the hotel developer’s corporate design standards for water fittings, lighting, heating, and air-conditioning are specific to the project, but the EDGE Base Case will still use local typical practices or codes (Option C). Option A is incorrect, as the project can still be certified using the standard Base Case. Option B is wrong because the Base Case does not adapt to corporate specifications. Option D is also incorrect, as the Base Case is not verified on a case-by-case basis for specific hotel chains but is standardized for the region and typology.
Reference:EDGE User Guide Version 2.1, Section 2.3: Using the EDGE App; EDGE Methodology Report Version 2.0, Section 3.1: Base Case Determination.

According to the CBCI EDGE curriculum, the EDGE software calculates and reports building energy performance based on delivered energy consumption. Delivered energy refers to the actual energy supplied to the building from external sources such as electricity from the grid, natural gas, district cooling, or other fuels.
The software estimates annual energy use for both the baseline case and the improved case and expresses savings as a percentage reduction in delivered energy.
EDGE does not primarily report results in terms of primary energy, which would include upstream energy losses associated with extraction, generation, and transmission. While primary energy is a common metric in some building assessment systems, EDGE focuses on delivered energy because it is directly measurable, easier to verify, and more applicable across diverse markets globally.
Electrical energy alone is also not the sole output, since buildings may use multiple energy carriers such as gas or district systems. Renewable energy is considered within the improved case when on-site systems such as solar photovoltaics are included, but it is not itself the energy consumption result; rather, it offsets delivered energy demand. Therefore, the correct answer is delivered energy.

The CBCI EDGE curriculum distinguishes clearly between eligibility to attend the EDGE Expert training and eligibility to be licensed or recognized as an EDGE Expert. For attending the training itself, the curriculum states that there is no formal prerequisite regarding qualifications. This is because the training is designed to be accessible to a wide range of participants, including professionals who may support EDGE projects indirectly, students, and stakeholders who want to understand the EDGE standard and the certification process.
The stricter requirements such as having a bachelor’s degree or having specific construction industry experience relate to later steps in the pathway, especially when a participant aims to progress from training attendance to formal credentialing, licensing, or professional recognition as an EDGE Expert. In other words, options B, C, and D reflect possible qualification pathways for becoming eligible for the credential, not for simply joining the training. Therefore, when the question asks specifically about the eligibility requirement to attend an EDGE Expert training, the correct answer is that there is no prerequisite regarding qualifications.

Variable speed drives (VSDs) are a recognized energy efficiency measure in EDGE for optimizing HVAC system performance. The EDGE User Guide explains their role: “Variable speed drives in HVAC systems, such as those used in fans and pumps, adjust the motor speed to match the load demand, significantly reducing energy consumption compared to fixed-speed systems. This measure can achieve up to 30% energy savings in HVAC operations” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option C, reduce energy consumption, directly aligns with this description. Option A (reduce the speed) and Option B (increase the speed) are partially correct in that VSDs adjust speed, but the primary benefit in EDGE is energy savings, not speed adjustment itself: “The goal of VSDs in EDGE is energy reduction through speed modulation, not speed adjustment as an end” (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Option D (reduce water consumption) is incorrect, as VSDs impact energy use, not water: “VSDs are an energy measure and do not directly affect water consumption in HVAC systems” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Thus, VSDs help reduce energy consumption (Option C).
Reference:EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics.

Air-cooled chillers are a type of HVAC system commonly evaluated in EDGE for their energy efficiency in green building design. The EDGE Methodology Report Version 2.0 outlines the components of air-cooled chillers in the context of energy efficiency measures. According to the EDGE User Guide (Version 2.1), air- cooled chillers differ from water-cooled chillers by not requiring a cooling tower or associated water-based components like a condenser pump. The guide states: “Air-cooled chillers consist of a compressor, air-cooled condenser, thermal expansion valve, and evaporator, which work together to provide cooling by rejecting heat directly to the ambient air” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option A includes a cooling tower and condenser pump, which are specific to water-cooled chillers. Option D mentions a water- cooled condenser, which is incorrect for air-cooled systems. Option C includes a chilled water pump, which is not a core component of the chiller itself but part of the broader system. Option B accurately lists the compressor, condenser (air-cooled, implied), thermal expansion valve, and evaporator, aligning with the EDGE description of air-cooled chiller components.
Reference:EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, HVAC Systems.

The timeline for conducting a site audit as part of the EDGE certification process is critical to ensure that the project’s implementation aligns with the design-stage claims. The EDGE Certification Protocol specifies the timeframe for post-construction audits: “A site audit for EDGE certification must take place within 12 months of the project’s practical completion date to verify that the green building measures have been implemented as claimed in the self-assessment. This ensures that the audit reflects the building’s as-built condition while the project details are still current” (EDGE Certification Protocol, Section 3.4: Post-Construction Requirements).
Option A, 12 months, directly matches this requirement. Option B (18 months), Option C (24 months), and Option D (36 months) exceed the specified timeframe, which could lead to discrepancies due to changes in the building’s condition or operation: “Conducting the site audit beyond 12 months may result in inaccuracies, as building systems or occupancy patterns may change, affecting the verification of measures” (EDGE Expert and Auditor Protocols, Section 4.4: Site Audit Procedures). The EDGE User Guide also supports this timeline: “To maintain the integrity of the certification process, the site audit should be scheduled within 12 months of practical completion, allowing the Auditor to assess the building in its initial operational state” (EDGE User Guide, Section 6.3: Post-Construction Certification). The 12-month limit ensures that the audit is timely and relevant, making Option A the correct answer. Additionally, the EDGE Certification Protocol notes: “Extensions beyond 12 months may be granted only in exceptional circumstances, subject toapproval by the Certification Provider, but this is not the standard requirement” (EDGE Certification Protocol, Section
3.4: Post-Construction Requirements). Since the question asks for the standard timeframe, 12 months (Option A) applies.
Reference:EDGE Certification Protocol, Section 3.4: Post-Construction Requirements; EDGE Expert and Auditor Protocols, Section 4.4: Site Audit Procedures; EDGE User Guide Version 2.1, Section 6.3: Post- Construction Certification.

In the CBCI EDGE framework, an EDGE Expert supports the project team in achieving certification by guiding design decisions, modeling the project in the EDGE software, and helping prepare and organize documentation for submission. This commonly includes facilitating the client’s application process, explaining how the EDGE Standard works, and providing basic guidance on using the EDGE App or interpreting EDGE results. EDGE Experts also assist design teams in selecting appropriate energy, water, and materials strategies to meet the minimum savings thresholds and align the improved case inputs with the intended specifications.
However, EDGE Experts are not permitted to act as third-party verifiers or issue certifications. Auditing and certification issuance are independent functions performed by an EDGE Auditor under an accredited Certification Body. This separation is essential to maintain impartiality and avoid conflicts of interest: the party who advises and models the project cannot be the same party who verifies compliance and awards certification. Therefore, providing EDGE audit services and issuing preliminary or final EDGE certificates is not within an EDGE Expert’s scope of work, making option C the correct answer.

In a hot and dry climate with low rainfall, water efficiency measures in EDGE are evaluated based on their potential to reduce potable water demand, but their effectiveness depends on local conditions. The EDGE User Guide explains the impact of various water-saving measures: “In regions with low rainfall, rainwater harvesting provides minimal water savings due to limited precipitation, whereas measures like low-flow showers, dual flush toilets, and black water recycling can achieve consistent savings by reducing direct water use or reusing wastewater” (EDGE User Guide, Section 5.2: Water Efficiency Measures). Option B, rainwater harvesting, relies on rainfall to collect water for non-potable uses, but in a hot and dry climate with low water availability, its effectiveness is limited: “Rainwater harvesting systems in EDGE are modeled based on local precipitation data. In arid climates with annual rainfall below 200 mm, savings from rainwater harvesting are typically less than 5% of total water demand, as the collected volume is insufficient to meet significant needs” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). In contrast, Option A (low-flow showers) reduces water use directly: “Low-flow showers can reduce water consumption by 20-30% in buildings, regardless of climate, by limiting flow rates to 6-8 liters per minute” (EDGE User Guide, Section
5.2: Water Efficiency Measures). Option C (recycle black water) also offers consistent savings: “Black water recycling systems can save 30-40% of water demand by treating and reusing wastewater for flushing or irrigation, independent of rainfall” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). Option D (dual flush for water closets) similarly provides reliable savings: “Dual flush toilets reduce water use by 25-35% by offering a low-flush option for liquid waste, effective in all climates” (EDGE User Guide, Section 5.2: Water Efficiency Measures). Given the low rainfall in a hot and dry climate, rainwater harvesting (Option B) yields the lowest water savings compared to the other measures, which do not depend on precipitation. The EDGE User Guide further notes: “In dry climates, measures like rainwater harvesting are often the least effective, while demand-side measures (e.g., low-flow fixtures) and recycling systems provide higher and more consistent water savings” (EDGE User Guide, Section 5.3: Additional Water Efficiency Measures). Thus, rainwater harvesting (Option B) gives the lowest water savings in this context.
Reference:EDGE User Guide Version 2.1, Section 5.2: Water Efficiency Measures, Section 5.3: Additional Water Efficiency Measures; EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations.

In the CBCI EDGE curriculum, the Share Subproject function is treated as a project administration permission, because it controls who can access a project or part of a project and what they are allowed to do inside the EDGE platform. Sharing affects project confidentiality, accountability for inputs, and control of documentation, so it is restricted to the user role that holds administrative authority over the project workspace.
The Owner role is the primary controlling role in an EDGE project. The Owner can manage access, invite or remove team members, and assign appropriate permissions for collaboration. This is consistent with how EDGE separates responsibilities: the client side controls project data entry, collaboration, and submissions, while verification roles remain independent.
Auditors and Certifiers are part of the independent third-party assessment pathway. Their access is typically granted for review and verification purposes, not for administering who the project is shared with. A Reviewer role, where used, is also generally a read-only or limited-access role and does not have authority to share or manage subprojects.
Therefor

According to the CBCI EDGE curriculum and EDGE certification workflow, the responsibility for entering and adjusting default improved case values in the EDGE software lies primarily with the Client or the Client’s appointed EDGE Expert during the design phase. The improved case represents the proposed energy, water, and materials efficiency strategies that go beyond the baseline case. Therefore, it must accurately reflect the design intent, specifications, and selected green measures for the project.
The Auditor’s role is not to create or modify the improved case on behalf of the Client, but to independently review, verify, and validate the inputs against supporting documentation. This ensures impartiality and maintains the integrity of the certification process. Allowing the Auditor to adjust values directly would compromise the independent third-party verification principle embedded in the EDGE certification framework.
The EDGE Operations and Maintenance Team is relevant mainly for operational performance after project completion, not for inputting design-stage software data. Similarly, the Certification Provider oversees the process but does not alter project-specific software inputs. Therefore, the correct process is that the Client adjusts the improved case values, and the Auditor reviews them for compliance and accuracy.

In the CBCI EDGE curriculum, the embodied carbon assessment for existing buildings is handled differently from new construction. The key principle is that the existing building fabric is treated as already “sunk” and is not counted again in the embodied carbon calculation. This means elements such as the existing roof construction do not increase embodied carbon in the EDGE assessment for a retrofit project, because EDGE focuses on what is newly added or replaced as part of the upgrade scope.
Embodied carbon in EDGE is driven by the quantities and types of new construction materials introduced through the retrofit, such as added insulation, new wall or roof layers, new glazing, new finishes, or other building-material interventions. Therefore, the factor that increases embodied carbon is the inclusion of new materials in the retrofit scope.
While external shading devices can indeed add embodied carbon because they are additional materials, the most accurate and complete statement in the options is the broader one: any new materials added during the retrofit increase embodied carbon. New mechanical systems are generally treated under operational energy impacts rather than being core contributors in the EDGE embodied carbon in materials calculation.

According to the CBCI EDGE certification framework, EDGE Certification is awarded based on verified design and as-built performance at the time of project completion. Once a project has successfully passed the design audit and site audit, and certification is issued, there is no requirement for periodic renewal or ongoing recertification to maintain the status.
EDGE differs from operational performance rating systems that require annual reporting or periodic reassessment. The EDGE system confirms compliance at the point of certification by verifying that the energy, water, and materials efficiency measures modeled in the software have been properly implemented.
After certification, the certificate remains valid without mandatory annual self-assessments, recurring site visits, or scheduled third-party re-verification.
If substantial renovations or changes are made in the future and the owner seeks certification for those changes, a new certification process may be required. However, to maintain an already awarded EDGE Certification under normal circumstances, no additional actions are required. Therefore, the correct answer is that there are no requirements to maintain EDGE Certification.

The roles and responsibilities in the EDGE certification process are clearly defined to ensure a streamlined audit process. The EDGE Certification Protocol explicitly assigns the responsibility for providing documentation to support green building measures: “The EDGE Client is responsible for providing a full set of documentation to support each green building measure selected in the project assessment. This includes drawings, specifications, manufacturer’s data sheets, and any other evidence required by the Auditor to verify compliance with the EDGE standard during both the design and post-construction stages” (EDGE Certification Protocol, Section 3.1: Certification Process). Option A, the Client, directly aligns with this requirement, as the Client (typically the project owner or developer) is the primary party submitting the project for certification and must provide all necessary evidence. Option B (the Facility Manager) is incorrect because the Facility Manager’s role is operational, not related to certification documentation: “Facility Managers may assist with operational data for EDGE Zero Carbon certification but are not responsible for providing design or construction documentation” (EDGE Certification Protocol, Section 2.3: Certification Levels). Option C (the Building Inspector) is also incorrect, as this role is external to the EDGE process and not involved in certification: “Building Inspectors ensure compliance with local codes, not EDGE requirements” (EDGE User Guide, Glossary). Option D (the project design team) may prepare documentation, but the responsibility lies with the Client to submit it: “While the design team often prepares technical documents, it is the Client’s responsibility to compile and provide them to the Auditor as part of the certification process” (EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Client). The EDGE User Guide further reinforces this by stating: “The Client must ensure all supporting documentation is complete and accessible to the Auditor to avoid delays in the certification process” (EDGE User Guide, Section 6.2: Documentation Requirements). Therefore, the Client (Option A) is responsible for providing the full set of documentation for the audit.
Reference:EDGE Certification Protocol, Section 3.1: Certification Process, Section 2.3: Certification Levels; EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Client; EDGE User Guide Version 2.1, Section 6.2: Documentation Requirements, Glossary.

Variable Refrigerant Volume (VRV) or Variable Refrigerant Flow (VRF) systems are evaluated in EDGE for their energy efficiency in HVAC applications. The EDGE User Guide explains their application: “VRV/VRF systems are best suited for multizone spaces, as they can simultaneously heat and cool different zones by varying the refrigerant flow, making them ideal for buildings with diverse thermal loads, such as hotels, offices, or hospitals with multiple rooms” (EDGE User Guide, Section 4.2: Energy Efficiency Measures).
Option C, multizone space, aligns with this description, as VRV/VRF systems excel in managing varied temperature needs across multiple zones. Option A (single zone space) and Option B (single zone office space) are incorrect, as VRV/VRF systems are less efficient for single zones: “For single zone spaces, simpler systems like split units are more appropriate, as VRV/VRF systems are designed for multizone control” (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Option D (meeting space) is too specific and typically a single zone, not leveraging VRV/VRF’s multizone capability: “Meeting spaces are often single zones, where VRV/VRF systems may be oversized” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Thus, VRV/VRF systems are best used for multizone spaces (Option C).
Reference: EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics.

Efficiency in fans and pumps is a critical aspect of green building design in EDGE, particularly for reducing energy consumption in HVAC systems. The EDGE User Guide provides detailed guidance on efficiency measures for mechanical systems: “Variable speed drives (VSDs) deliver the highest efficiency in fans and pumps by adjusting the motor speed to match the actual demand, significantly reducing energy consumption compared to fixed-speed systems. VSDs can achieve energy savings of up to 30-50% in HVAC applications by avoiding the constant operation at full speed typical of single or constant speed drives” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option D, variable speed drive, aligns with this description as the most efficient option. Option A (two speed drive) offers some efficiency by allowing two operating speeds, but it is less flexible than VSDs: “Two speed drives provide limited efficiency gains, as they cannot continuously adjust to varying loads, unlike variable speed drives” (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Option B (single speed drive) and Option C (constant speed drive) are essentially the same in this context, operating at a fixed speed regardless of demand, leading to energy waste: “Single speed or constant speed drives run at a fixed rate, resulting in higher energy consumption compared to variable speed drives, which modulate speed based on need” (EDGE User Guide, Section 4.2:
Energy Efficiency Measures). The EDGE Methodology Report further elaborates: “Variable speed drives are the most efficient option for fans and pumps in EDGE, as they minimize energy use by matching output to demand, unlike two speed or constant speed drives, which operate inefficiently under partial loads” (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). This makes variable speed drives (Option D) the clear choice for delivering the highest efficiency in fans and pumps.
Reference:EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics.