LEED CS EA-1 question

We just finished two LEED CS projects. So here is my experience and the reviewers guidance: #1 b) is correct, but you are only allowed to calculated the actual tenant design for lighting, if it is required by the lease. Otherwise you will have to assume baseline power density, so basically you don't claim savings for the lighting. However you can claim savings for any measures, which you require within the tenant built-out like motion sensored lighting (beyond ASHREA mandatory provisions requirements) or daylighting sensored lighting. Owner spaces like main lobby, stairs, basement parking are to be calculated as per actual design and in the baseline building with ASHRAE standard. #2 b) is the correct answer and I think d) is probably correct also. ;) In regards to the metering (separate user), this is basically to help the reviewer see, what you have claim savings for and also if you do the measurement and verification as well as EA C6 Green power this is were it comes into play. Because you have to measure 80% of your energy consumption and you only have to purchase green power for the electrical energy consumed by the owner's portion of the building. The LEED guide says calculated it based on BOMA areas, but the reviewer may also accept your more accurate approach with seperate meters. That usually ends up being less green power. I hope that helps. Happy Holidays

The answers are different for CS-2.0 and CS-2009 projects. For CS-2.0 it is a & a For CS-2009 it is b & a For #2 if the lighting is in the core shell scope, then it is part of the project, and can be modeled as designed.

I do have to disagree. I have submitted 4 LEED CS 2009 projects within the last year. The reviewers comment always said that we can only claim savings for the lighting, if the lease or anything else requires the tenant to install or design to that level. For instance we have tried to claim savings for daylight sensors, but we could only use the savings to our advantage by showing that this tied into a BAS system controlled by a weather station on the roof, which controls the dimming of each lighting fixture and dim it up or down. So even if the owner is supplying the lighting or paying for it, you can only make it count if the owner actually determines the lighting power density not just pays for the lighting. I think the reasoning behind this is that your tenant might move out after 2 years and then you might not have the same lighting power unless you actually require it.