EMIS ReportDesign-Prelim 2020sep11 - Page 25



Study participants with EMIS made improvements to
their buildings, achieving a median second-year energy
savings and ranges6 as summarized below and shown
by year in Table 4.

EIS: 3 percent ($0.03/sq ft) savings range:
–15% to 22%

FDD: 9 percent ($0.24/sq ft) savings range:
1% to 28%
TABLE 4: Summary of Cumulative Energy Savings for Organizations with EIS
EIS
Year 1
Year 2
Year 3
Year 4
Year 5
Year 6
Year 7
Year 8
Number of
organizations
22
10
6
5
3
3
2
1
Floor area
(millions of sq ft)
139
82
51
50
40
40
5
3
2,109
1,333
1,234
1,216
1,139
1,139
62
54
4%
3%
2%
4%
4%
11%
17%
8%
$0.10
$0.03
$0.02
$0.05
$0.11
$0.41
$0.47
$0.23
Number of
buildings
Median savings (%)
Median savings
($/sq ft/yr)
3. SMART ENERGY ANALYTICS CAMPAIGN RESULTS
Tables 4 and 5 show median savings since the
EMIS was installed, in percentage and dollars per
square foot per year. In some cases, the EMIS had
been installed for more years than the energy data
were provided. For savings in Year 3 and beyond, the
savings reported are not necessarily attributable to the
EMIS, therefore these data are shown in darker gray.
TABLE 5: Summary of Cumulative Energy Savings for Organizations with FDD
FDD
Year 1
Year 2
Year 3
Year 4
Year 5
Number of organizations
28
18
10
5
2
Floor area (millions of sq ft)
101
90
50
37
3
Number of buildings
556
509
193
84
22
Median savings (%)
6%
9%
13%
22%
27%
$0.17
$0.24
$0.38
$0.37
$0.88
Median savings ($/sq ft/yr)
Negative savings (an increase in energy use) occurred for two organizations with EIS in the second year after installation. Negative energy
savings is likely attributable to changes in building use or additions to building floor area.
6
Berkeley Lab | Proving the Business Case for Building Analytics
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