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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Weighted Average of Renovated and Addition energy saving targets

Hello, I've searched the forum but haven't found a definite answer. I have building consisting of 86% existing and 14% addition and I would like to calculate the weighted average energy savings percentage and points for the project. I need to show a step-by-step calculation on how I can achieve this. I would like to do this without using any forms. For example, if the total combined building achieves 30% cost savings better than ASHRAE 90.1-2007 for new construction, how does my calculation start? Any help would be very much appreciated. Thank you

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 07/09/2014 - 16:02

The formula can be found in Section 4.2 of the Advanced Energy Modeling Guide for LEED.

Wed, 07/09/2014 - 18:36

Thank you, Marcus.

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