I am working in a project that had a previous consultant and we do not agree with the way the CHP shall be modeled. The building will be served by a natural gas power generator that will operate an indirect fired absorption chiller from 17:30 to 20:30.

The Proposed Case has been previously modeled with a generator operating from 17:30 to 20:30 on weekdays, and Baseline Building has been modeled without it. I understand that energy modeling for LEED does not allow this procedure. According to the latest document on this issue, Treatment of District or Campus Thermal Energy in LEED V2 and LEED 2009 – Design & Construction, from 2010, a generator should have also been modeled for the Baseline case, from 17:30 to 20:30, but assuming separate production of electricity and thermal energy.

Is there a more recent modeling protocol on CHP? Is it allowed to take credit of peak shaving without CHP?