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Do the required savings for this prerequisite (and credit) need to come only from building energy, or also process loads?

Our project doesn't have enough energy savings to earn the prerequisite. Can we get there by incorporating onsite renewables?

Our proposed design has insulation R-values that are below those prescribed by ASHRAE 90.1-2010. Can we still meet the prerequisite?

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NC-v4 EAp2:Minimum energy performance

Modeling a Greenhouse

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Gabriela Crespo
Senior Energy Analyst
Brightworks Sustainability
LEEDuser Basic Member
1 thumbs up

Hi guys!

We're working on a project that includes a greenhouse that makes up about 45% of the project's area. We found guidance on LI-5223/LI-5364, about how to treat the greenhouse as a process load and document savings using an ECM, however, these were published for v2.2 and v2009 of LEED. Does anyone know if we can use them for a v4/v4.1 project?

Thanks!

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

Tue, 04/07/2020 - 14:35

I think the general guidance about treating it as a process load still holds. Not sure about the portions of these interpretations that approve a baseline for determining savings. I think there may be some guidance in them for you to follow but the proposed baselines were based on older versions of 90.1 so you will need to come up with an appropriate baseline yourself if you wish to claim savings.

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