Hi Marcus,
I'm working on a 200-unit residential building and we are looking at feasibility of this credit. Our total lighting load is over 10% of the energy use so we plan on metering it, but each residential unit is hooked up to its own electrical panel. In order to get the total lighting load, we would need to submeter each unit's lighting use. If each residential unit's lighting load is less than 10% of the total, does each unit need to be submetered? Not sure if I captured the situation correctly so let me know if more information is needed. Thank you.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
April 12, 2017 - 6:04 pm
The 10% would be for the whole building. Think whole building energy modeling output end uses.
If i were trying to do M&V I would probably make the case that I could do sampling of a certain percentage of units. Not sure if this would fly but it might we worth a try. Implementing this credit in this building type where you monitor everything would be very expensive. Personally I would not even try this credit in that building without knowing the plan for using the data and establishing a methodology for gathering it that made some sense.
Brightworks Sustainability
Brightworks Sustainability LLC46 thumbs up
April 13, 2017 - 7:20 pm
Thank you for your response. I received a response today from LEED Coach as well stating that there are no special circumstances for residential, unfortunately.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
April 14, 2017 - 9:15 am
Maybe you could propose the residential alternative compliance path for this credit. You can do that through an interpretation. Maybe it would be some sampling as I suggested. Maybe if each unit is metered you could use that data to meet the credit intent. I do think you would need a really compelling reason for wanting to do this credit beyond the point.