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FAQs about EAc2 :

Can I really double-count onsite renewable energy in both EAc2 and EAc1?

Our PV system is being installed after the building is occupied. Is that okay?

Our project will have a PV system onsite, but it will be installed, operated, and owned by a separate entity that is paying for the system through a premium price per kWh paid by the utility, per state regulations. Is there any way to count this toward th

A biofuel-based cogenerator is being used to produce both electricity and heat (CHP). Can I consider all the energy produced, or just the electricity?

Can a backup generator qualify, if it runs on biofuels?

We have a PV array installed on our campus, under the same ownership, but not on the building or within the LEED project boundary. Can we count that toward EAc2?

Because of how our onsite PV system was financed through the utility, the project is selling the RECs associated with its solar energy production, even though we own the PV array and its power. Is there any way we can earn EAc2?

Can I pursue this credit if I am using one of the prescriptive compliance paths for EAp2/EAc1?

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NC-2009 EAc2:On-Site Renewable Energy

PV Array Energy model calc.

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Ken Scalf
Architect
Optimized Design Solutions
LEEDuser Basic Member
4 thumbs up

Hi, I'm working on a project where the owner has interest in adding a roof mounted PV system that is connected to the facility and the grid in the LEED project/boundary and in the associated construction contract. However the 50kW array (approx. 33% of facility consumption) will be provided, installed, and maintained by a subcontractor who will own the system for a period of time and pay for the system through savings, participating in the local utility program that will pay a premium per kWh for onsite generation. Obviously, and regrettably, we cannot claim EAc2 credit under 2009, however is it acceptable to include the onsite generation capacity in the energy model?

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

Wed, 04/25/2012 - 13:11

I have not seen this attempted. There is not a clear link between EAc2 and EAc1 in the Reference Guide. You could always give it a try and see if it makes it through the review process. Otherwise it sounds like a LEED Interpretation. You might check there to see if this issue has been raised before.
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Ken Scalf
Architect
Optimized Design Solutions
LEEDuser Basic Member
4 thumbs up

Sun, 05/06/2012 - 19:09

Marcus, Thank you for your quick reply, I'll report the results for others.
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Brooke Bogart
Principal
Ecological Environments
LEEDuser Basic Member
2 thumbs up

Wed, 06/06/2012 - 17:46

Hi Ken. I am curious of the outcome, as we have the same situation. Please do keep us posted!

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