Section 2: Individual LEED Credit Reviews
Summary of First Cost Impacts
Synergistic Credits
Any on-site renewable energy production that
applies toward Credit EA-2 can also be deducted
Courthouse (New Construction, 262,000 GSF)
from a building's regulated energy use in the EA-1
calculations. Thus, in the Courthouse and Office
Total Credit Cost ......................................7,586
Building scenarios where the photovoltaic systems
Cost Impact ($/GSF)............................01/GSF
are installed to earn a point, an additional point is
Cost Impact (%)............................................ 1.37%
also earned under Credit EA-1.
Office Building (Modernization, 306,600 GSF)
Item SN-2 (Courthouse) of Section 3 reviews the
cost implications of earning Credit EA-2 in
Minimal Faade Renovation
conjunction with Credit SS-6.1 (Stormwater
Management, Rate and Quantity) and Credit SS-7.2
Total Credit Cost ......................................6,912
(Heat Island Reduction, Roof). Credit EA-2 is
Cost Impact ($/GSF)............................12/GSF
included in this scenario only because of the roof
Cost Impact (%)............................................ 2.43%
areas involved (the required areas for the green
roof and PV panel array are too large to fit on the
Full Faade Renovation
upper roof the lower roof above the first floor
entry is therefore converted to a green roof as
Total Credit Cost ......................................1,282
well).
Cost Impact ($/GSF)............................87/GSF
Cost Impact (%)............................................ 2.18%
Additional Considerations
There is an inherent relationship between this
credit and Credit EA-1 (Optimize Energy
Performance). By lowering the overall energy use
of the building (the goal of EA-1), the required
amount of renewable power to achieve this credit
is also reduced. Since energy conservation
measures are typically less costly than renewable
power (on a cost-per-kilowatt-hour basis) it is
important to implement measures that reduce a
building's energy use first and then size the
renewable energy system accordingly.
Additional synergies between Credit EA-2 and EA-
1 are reviewed below.
GSA LEED COST STUDY
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