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FAQs about EAc2 :

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?

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?

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NC-2009 EAc2:On-Site Renewable Energy

Transpired Solar Collector

Tyler Barter

Architect

Oak Point Associates

LEEDuser Basic Member

47 thumbs up

April 17, 2012

For an upcoming project we are proposing using a metal wall system that acts as a transpired solar collector to bring preheated air into the building. Preheating the air will offset energy being used by the building systems to heat the building in the heating months. Would this strategy be considered "passive" solar or could it be considered an onsite renewable energy technology that would be applicable to this credit?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 04/17/2012 - 14:33

Those systems typically use fans and other mechanical devices to operate making them an active solar system. So they can be counted. Make sure you provide thorough documentation of the calculation of the savings.

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