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NC-2009 EAp2:Minimum Energy Performance

Fuel Rates for Non-traditional Fuel Sources

Hi All, I am working on a project where rice husk steam boiler is used for process. The fuel source (rice husk) is available at a free of cost for the project. So, as per LEED interpretation 10390, for non-traditional fuel sources that are unregulated within ASHRAE 90.1, the actual cost of the fuel shall be used in both baseline and proposed design. But if the fuel source is available at a discounted cost because it would otherwise be sent to the landfill or similarly disposed of, the project may use local rates for the baseline case and the actual rates for the proposed case. So, is it acceptable to model the proposed design with zero cost for fuel and baseline with local rates for the fuel? Kindly clarify. Thanks in advance.

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

Mon, 07/10/2017 - 15:14

I sounds like this may count as an agricultural waste renewable energy fuel source. So you would use a conventional fuel like gas both model in both models and then count the rice husk fuel as a renewable. Use the same rate as the gas/oil for the renewable just like you would do with solar. This would eliminate the cost in the proposed.

Mon, 07/17/2017 - 05:11

Thanks Marcus. Since rice husk is an agricultural waster renewable energy fuel source, can we target for EA Credit 2 - On-Site Renewable Energy?
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 07/17/2017 - 14:37

If it counts as renewable it counts for EAc2.

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