Mixed Deck — All EMP Topics Flashcards

Which resource is typically used to assess long-term wind energy potential at a prospective project site?

Answer: Measure-Correlate-Predict (MCP) analysis combining on-site measurements with long-term reference data

MCP correlates short-term on-site wind measurements (typically 1–2 years) with long-term reference datasets (e.g., ERA5 reanalysis) to produce a reliable multi-decade wind resource estimate for energy yield modeling.

What is the primary advantage of bifacial solar modules over monofacial modules?

Answer: They capture reflected irradiance from the ground on their rear surface, increasing energy yield

Bifacial modules collect light on both faces; albedo (reflected) radiation from ground surfaces can boost energy yield by 5–30% depending on ground reflectivity and mounting height.

Under California's AB 1103 (now part of the Nonresidential Building Energy Use Disclosure Program), commercial building owners must disclose ENERGY STAR data during which transaction?

Answer: Sale, lease, or financing of the whole building

California's disclosure law requires ENERGY STAR Portfolio Manager data to be provided to prospective buyers, lessees, or lenders when a whole nonresidential building is sold, leased, or financed.

Under ISO 50001:2018, who holds ultimate accountability for the energy management system?

Answer: Top management

ISO 50001:2018 places ultimate accountability for the EnMS with top management, who must demonstrate leadership and commitment.

An energy manager is preparing documentation for a carbon offset project using the American Carbon Registry (ACR). What document establishes the project's eligibility and quantification methodology?

Answer: Project Design Document (PDD)

A Project Design Document (PDD) is the foundational document for carbon offset projects that describes project activities, baseline methodology, and expected emission reductions.

An energy auditor observes that a facility's boiler is operating with an excess air level of 80%. This condition primarily results in:

Answer: Increased stack losses and reduced boiler efficiency

Excessive excess air carries unnecessary heat out the stack, significantly reducing boiler combustion efficiency; the optimal range is typically 10–20% excess air.

In emergency energy planning, what does the term 'critical load' specifically refer to?

Answer: Electrical loads that must remain energized to protect life safety, data integrity, or mission-critical processes

Critical loads are those whose loss would result in life safety risks, significant data loss, or unacceptable operational disruption, and must be protected by backup power.

What is 'thermal mass' in building energy management?

Answer: A building material's ability to absorb, store, and release heat energy

Thermal mass materials (concrete, masonry) store solar and internal heat gains during the day and release them slowly, reducing peak HVAC loads and shifting energy demand.

In energy benchmarking, what is the significance of ENERGY STAR's 1-100 score for commercial buildings?

Answer: It indicates a building's energy efficiency relative to similar buildings nationwide, with 100 being most efficient

The ENERGY STAR 1-100 score places a building's energy performance on a national percentile scale; a score of 75 or above qualifies for ENERGY STAR certification.

Which building envelope measure provides the greatest energy benefit in a climate with both hot summers and cold winters?

Answer: Installing low-emissivity (low-e) window glazing

Low-e coatings reduce both solar heat gain in summer and radiant heat loss in winter, benefiting mixed climates year-round.

How should Energy Management Professional professionals approach quality improvement?

Answer: Through systematic evaluation of outcomes and implementation of evidence-based changes

Systematic evaluation of outcomes with evidence-based improvements ensures continuous quality enhancement and demonstrates professional commitment to excellence.

A retrocommissioning study reveals that AHU supply air temperature setpoints are not being reset based on outdoor air temperature. What monitoring data would confirm the energy savings potential of implementing this reset strategy?

Answer: Continuous logging of supply air temperatures, outdoor air temperatures, and cooling/heating energy

Continuous logging across varying outdoor temperatures reveals how often reset opportunities exist and quantifies the heating and cooling energy currently wasted by static setpoints.

What is a 'ratchet clause' in a utility rate schedule, and why is it significant for energy managers?

Answer: A billing mechanism where a single high peak demand event can set minimum demand charges for 11 to 12 subsequent months

A ratchet clause stipulates that monthly demand charges must be at least a specified percentage (e.g., 80%) of the highest peak demand recorded in the previous 11–12 months, meaning one unusually high peak can inflate bills for a full year.

Which of the following is an example of passive solar design?

Answer: Using south-facing windows to capture sunlight

Passive solar design involves strategically designing buildings to naturally capture, store, and distribute solar energy for heating or reject it for cooling, without mechanical systems. Using south-facing windows is a prime example, allowing sunlight to penetrate and warm interior spaces during colder months. This reduces the need for artificial heating and improves energy efficiency.

Why are programmable thermostats effective for energy savings?

Answer: They help automate heating and cooling schedules

Programmable thermostats allow users to set specific temperature schedules for different times of the day or week. By automatically adjusting temperatures when a building is unoccupied or during sleeping hours, they prevent unnecessary heating or cooling. This automation ensures energy is only used when needed, leading to significant savings on utility bills without sacrificing comfort during occupied periods.

Under the Clean Air Act Title V operating permit program, what must an energy manager document if a facility switches from natural gas to fuel oil for emergency generation affecting reported NOx emissions?

Answer: A Significant Permit Modification or deviation report filed with the state agency

Title V permits require facilities to notify the permitting authority of deviations or changes that may affect regulated air emissions, which can trigger a permit modification requirement.

A hospital energy manager discovers that sub-meter data used in a Joint Commission sustainability report was recorded with a ±15% error. What M&V best practice should have prevented this?

Answer: Establishing meter calibration and uncertainty documentation per IPMVP guidelines

IPMVP requires documenting meter accuracy, calibration schedules, and acceptable uncertainty thresholds to ensure data quality in M&V reports.

What role does documentation play in Energy Management Professional professional practice?

Answer: It creates accountability, supports decision-making, and provides legal protection

Documentation creates accountability, supports informed decision-making, and provides legal protection for both the professional and the client.

What is the primary goal of a pre-task safety briefing (toolbox talk) conducted before energy system commissioning work?

Answer: Ensure all workers understand hazards and controls before starting

Pre-task briefings ensure every worker is aware of specific hazards, control measures, and emergency procedures before work begins, preventing incidents.

Which regulation focuses on reducing greenhouse gas emissions from power plants?

Answer: Clean Power Plan

The Clean Power Plan was a U.S. Environmental Protection Agency (EPA) regulation designed to reduce carbon dioxide emissions from existing fossil fuel-fired power plants. Its goal was to combat climate change by setting state-specific targets for emissions reductions and providing flexibility for states to meet those targets. Although it faced legal challenges and was later repealed and replaced, its original intent was squarely focused on greenhouse gas emissions from power generation.