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Lighting
A tax deduction for lighting is available on a linear sliding scale
for power use reductions of 25 to 50 percent beyond the requirements of
ASHRAE 90.1-2001. For your convenience, we’ve included the Lighting
Power Density Targets (based on a Whole Building Method) required
to meet typical deduction levels.
 Reducing
the total connected lighting load is only one step toward realizing the
$0.60 per square foot tax deduction. Lighting controls must
comply with mandatory and prescriptive requirements of ASHRAE 90.1-2001
and must, at a minimum, provide for bi-level switching in all occupancy
areas (excluding hotel and motel guest rooms, storerooms, restrooms and
public lobbies). Calculated lighting levels must be consistent with the
appropriate recommended practice guidelines set forth in the IESNA
Lighting Handbook, 9th ed.
Of the numerous building types listed in the Power Density Targets matrix,
we have selected several and created detailed examples of how you can
improve lighting efficiency:
Additional building types may be added over time.
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