Page 175 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

LEED Ener gy and Atmospher e 153

LEED 2009 Percent Reduction LEED 2.2 Percent Reduction
Points New Buildings Existing Building New Buildings Existing Building
Required 10 5 0 0
(EAp2)
1 12 8 10.5 (required) 3.5 (required)
2 14 10 14 (required) 7 (required)
3 16 12 17.5 10.5

4 18 14 21 14
5 20 16 24.5 17.5
6 22 18 28 21
7 24 20 31.5 24.5
8 26 22 35 28
9 28 24 38.5 31.5
10 30 26 42 35
11 32 28 − −
12 34 30 − −
13 36 32 − −
14 38 34 − −
15 40 36 − −
16 42 38 − −
17 44 40 − −
18 46 42 − −
19 48 44 − −
19 + 1 EP 50 46 − −

TABLE 4.1.1 Table of Point Differences between Version 2.2 and Version 2009, EAc1 Option 1
Based on Percent Reductions in Energy Uses from a Baseline

OR
OPTION 2 — PRESCRIPTIVE COMPLIANCE PATH (4 points in version 2.2, 1 point in
version 2009)
Option 2 is based on ASHRAE Advanced Energy Design Guides for various uses. In version
2.2 only the Small Office Building pathway was available, but version 2009 includes two
additional pathways for Small Retail Buildings (Path 2) and Small Warehouses and Self
Storage Buildings (Path 3), based on the 2006 and 2008 applicable ASHRAE Advanced
Energy Design Guide, respectively. The requirements are listed in Table 4.0.0 and are both
required as the EAp2 Minimum Energy Performance prerequisite and available as one point
for EAc1 in the 2009 version of LEED-NC. For small office buildings LEED 2.2 required to: