LEED Question

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twada

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I am not sure if this this right forum to ask about LEED lighting question.

I used EnergyPro to model the lighting employing the space by space mothod based on ASHRAE 90.1 - 2004.
My mechanical engineer revised the operating hour data input for the building from 156hrs/week to 126hrs/week.
Then my interior lighting baseline kW increased from 23.6kW to 26.3kW peak demand baseline.
All the interior space and LPD are the same. Can you explain why did the baseline increase insread of decrease?
 
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