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CI-2009 EAc1.4:Optimize Energy Performance—Equipment and Appliances

When to use Table vs. Spec rated power

Can someone clarify when to use the Table 2 rated power number vs. specification rated power. My example: Have 90 new computer monitors going into the project. According to the Dell website the rated power (maximum power draw) is 25 watts. Table 2 indicated a rated power of 120 watts. These are EnergyStar monitors and it would be to our advantage to use the 120 watt number obviously. Is that the intent of the credit, since we could have purchased any monitor? Or is it more appropriate to use the specified power for the equipement? Thank you.

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Steve Loppnow
Sustainability Account Manager
Stok
LEEDuser Expert
177 thumbs up

Mon, 12/19/2011 - 22:14

James, The best way to understand how this is supposed to work is to look at the prerequisite form for EAp2, where this information will be entered. You need to use the rated power of both ESTAR and non-ESTAR equipment. The form will do the rest of the work. Table 2 is meant to be an example but it may not be clear. The credit is set up to award points based on the total % of watts that are ESTAR rated, so to speak, not to quantify a total reduction in energy use due to the use of ESTAR equipment. I think Table 2 is confusing because it is presenting the rated power of both ESTAR and non-ESTAR equipment as the same, as if referring to a baseline, but that is not how the calculation works. What we are looking at is ESTAR rated watts over total rated watts.

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