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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

diesel generator on-site

Johannes Gellrich

LEEDuser Basic Member

15 thumbs up

October 14, 2011

Hi everyone, we are working on a project that produces its electricity on-site via diesel generators. The produced energy covers all energy consumption (heating is electric). After 3-5 years the building will be connected to the public power supply, the diesel generators serve as emergeny power aggregates. Since this is first time we are facing this I have some questions: 1. Should our LEED certification include the generators or are they negligible? If they should be included: 2. Whats the correct way to determine energy rates? Our oppinion : Proposed: Diesel Consumption * Diesel Prize * Efficiency of Generators Baseline: Typical Prize for Electricity * Consumption 3. The heating system is electric, but the fuel is originally diesel, so should we pick the according BL system for electric? 4. Are there any mandatory provisions for the generators? Thank you for any hints!

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Fri, 10/14/2011 - 21:55

The project must include all energy consumed and associated with the project. The energy costs must be identical in both models see G2.4. I would determine the electric cost from the generators and use that in both models. I would look to the District Energy Systems guidance on USGBC's web site for guidance on the way to model this and the appropriate BL system. I don't think generators are covered by 90.1.

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