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To determine the lighting power allowance (in watts) for your project building, look up the building type that best represents your project in Table 9.5.1 of ASHRAE 90.1-2007. Multiply the allowable LPD for that building type (in watts/ft2) by the gross l

To determine the lighting power allowance (in watts) for your project building, look up the building type that best represents your project in Table 9.5.1 of ASHRAE 90.1-2007. Multiply the allowable LPD for that building type (in watts/ft2) by the gross lighted floor area of the project. This is your lighting power allowance.  

Credits: 
EAc1.1
Project phase: 
Schematic Design
Credit tip type: 
Action Steps