Rating System

LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.0

Inquiry

I have several questions relative to this credit as it relates to new building construction. Question #1: Does the requirement to install continuous metering equipment for the 10 end-uses also necessitate that the 10 end-uses be continuously metered/monitored at the BMS? Question #2: To what level of rigor and/or accuracy must end-uses be metered or be capable of being metered? For example, the project employs the following energy conservation measures relative to lighting and lighting controls: high efficiency lights, dimming controls, occupancy sensors and daylighting controls. If Option B were to be pursued, would individual lighting circuits and dimming panels be required to be metered in order to determine lighting usage patterns and power consumption relative to each lighting ECM since no stipulations are allowed? Is this level of sub-metering also required for Baseline calibration if Option D were to be pursued? Question #3: Under Option B, must all strategies that have the potential to conserve energy relative to a Code-developed Baseline be analyzed in order to comply with this credit, or can the client chose to focus only on specific ECMs of their choosing? Question #4: Since Option B does not permit any stipulations, does a building that uses operable windows and a range of control interfaces with HVAC equipment ranging from none to end-switches preclude Option B and necessitate Option D whereby some level of stipulation relative to window opening and its affect on terminal unit conditioning can be applied?