Page 210 - Solar Power in Building Design The Engineer's Complete Design Resource

180 LEED—LEADERSHIP IN ENERGY AND ENVIRONMENTAL DESIGN

TABLE 7.1 NEW AND OLD BUILDING CREDIT POINT

% INCREASE IN ENERGY PERFORMANCE
NEW BUILDINGS EXISTING BUILDINGS CREDIT POINTS

14 7 2
21 14 4
28 21 6
35 28 8
42 35 10

credit levels shown in Table 7.1 are intended to reduce the design energy budget for
the regulated energy components described in the requirements of the
ASHRAE/IESNA standard. The energy components include the building envelope,
the hot-water system, and other regulated systems defined by ASHRAE standards.
Similarly to previous design measures, computer simulation and energy perform-
ance modeling software is used to quantify the energy performance as compared to a
baseline building system.

On-site renewable energy, credit no. 2 The intent of this measure is to encour-
age the use of sustainable or renewable energy technologies such as solar photovoltaic
cogeneration, solar power heating and air conditioning, fuel cells, wind energy, landfill
gases, and geothermal and other technologies discussed in various chapters of this book.
The credit award system under this measure is based on a percentage of the total
energy demand of the building. See Table 7.2.

Additional commissioning, credit no. 3 This is an enforcement measure to
verify whether the designed building is constructed and performs within the expected
or intended parameters. The credit verification stages include preliminary design
documentation review, construction documentation review when construction is com-
pleted, selective submittal document review, establishment of commissioning docu-
mentation, and finally the postoccupancy review. Note that all these reviews must be
conducted by an independent commissioning agency.
The point weight credit awarded for each of the four categories is 1.

TABLE 7.2 ENERGY-SAVING CREDIT AWARD

% TOTAL ENERGY SAVINGS CREDIT POINTS
5 1
10 2
20 3