ENERGY STAR®
PortfolioManager™
DataTrends
ENERGY STAR Certification
ENERGY STAR
Certified Buildings
35
20,403 Properties
H 3.1 Billion ft2
o/ Less Energy than
Typical Buildings
The U.S. Environmental Protection Agency's (EPA) ENERGY STAR Portfolio Manager tool
is changing the way we recognize the most energy efficient buildings. As of December
2012, organizations across the country have used Portfolio Manager to earn certification
for more than 20,000 top performing buildings, representing more than 3 billion commercial
square feet. ENERGY STAR certified buildings use an average of 35 percent less energy
and emit 35 percent fewer greenhouse gas emissions than typical buildings. To learn
about all of the ways organizations are using Portfolio Manager to track and manage
energy and water use, visit www.energystar.gov/DataTrends.
What is an ENERGY STAR
certified building?
An ENERGY STAR certified building meets strict energy
performance standards set by EPA and uses less energy, is
less expensive to operate, and produces fewer greenhouse gas
emissions than its peers. To qualify for this annual award, a
building must be verified to earn a score of 75 or higher on
EPA's 1 to 100 energy performance scale, indicating that the
building performs better than at least 75 percent of similar
buildings nationwide.
Growth in Certifications
Cumulative Number of Buildings
25,000
20,000 -
= 15,000 -
10,000 -

^	^ ^ 4^
Of the more than 20,000 ENERGY STAR certified buildings,
roughly 30 percent have earned the ENERGY STAR in multiple
years. The average score of these buildings increases as the
number of certifications increases, suggesting that improvement
persists year after year and that there is value in repeat
certification.
What are the greenhouse gas
reductions of certified buildings?
Certified buildings not only perform better than typical buildings,
they also have reduced their greenhouse gas emissions by an
average of 10 percent since first benchmarking in Portfolio
Manager. Collectively, they reduce 1.8 million metric tons of
C02e every year, equivalent to the emissions from the annual
electricity use of more than 270,000 homes. Reductions are
greater for those with starting scores in the bottom 25 percent
as these buildings had to improve the most to reach the score
of 75 or higher that is required for ENERGY STAR certification.
Greenhouse Gas Savings
ns
 oT
700 -
BOO
500
400
300
200
100 -
1 to 25 26 to 50 51 to 75
Starting Score
76 to 100
90
(/> 86
o>
S> 84
ENERGY STAR Scores for Certified Buildings
Average for all certified buildings
82
80
¦¦¦mil
1 2 3 4 5 6 78 or
Number of Certifications	more
What is the ENERGY STAR score? The ENERGY STAR score is a 1-to-100 assessment of a building's energy efficiency, as
compared with similar buildings nationwide, adjusting for climate and business activity. Learn more: www.enerqvstar.gov/benchmark

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How do certified buildings vary
by age and type?
ENERGY STAR certified buildings have been built as early as
1820 and as recently as 2011 and represent a range of building
types. Most buildings that earn certification were built between
1980 and 2010, though more than one-third of all certified
buildings were built in or prior to 1980. Buildings of all ages can
become top energy performers.
Certifications by Year Built
34%
> before
1980
2000 or
Later
1950 s
1960s
9%
1970 s
9% J
1990 S
1980 S
Certifications by Building Type
Bank/Financial
Institution
2%
Supermarket/.
Grocery
11%
Other
Office
K-12 Schoo
Retail
14%
Do ENERGY STAR certified
buildings show improvement?
On average, buildings certified through December 2012
increased their 1 to 100 score by 9 points and decreased
energy use 10 percent since they started benchmarking in
Portfolio Manager. Every type of building that can earn a 1 to
100 score improved, from 4 points for residence halls to 17
points for hotels.
Increase in Score by Building Type
Hotel
Supermarket
K-12 School
Hospital
Retail
Office
Medical Office
Bank
Courthouse
Warehouse
Dormitory
4 6 8 10 12 14
Average Increase in Score
16 18 20
Are lower-performing buildings
improving to earn certification?
One-third of ENERGY STAR certified buildings scored below 75
when they began using Portfolio Manager, indicating that EPA is
motivating improvement through the ENERGY STAR program.
On average, these buildings improved by 23 points and reduced
energy use by 21 percent.
Percent of Buildings by Starting Score
18% -I
15% -
12% -
9% -
6% -
3% -
0% -

34% of buildings reported
starting scores below 75
Starting Score
What is the financial value of
ENERGY STAR certification?
ENERGY STAR certified office buildings command significantly
higher rents, higher and less volatile occupancy rates, and
higher selling prices than otherwise similar conventional
buildings. Key findings from a recent U.C. Berkeley study show:
Better Financial Performance: A one-dollar per square
foot savings in office building energy costs increases cash
flow by $0.95 and asset value by $13 per square foot.
Higher Rent: The effective rent (including occupancy) of
ENERGY STAR certified buildings is 6.5 percent higher.
Higher Selling Prices: The transaction price for ENERGY
STAR certified buildings is 12.9 percent higher.
At the portfolio level, real estate investment trusts with a greater
percentage of ENERGY STAR certified properties perform better
on key measures of operating performance; they also tend to
have higher stock returns and face lower market risk. For more
information on all of this research, see reports by Eichholtz, Kok,
et.al. atwww.NilsKok.com/research.
The ENERGY STAR mark is a symbol of top
performance. ENERGY STAR buildings use 35
percent less energy and cost 35 percent less to
operate than their peers.


| ENERGY STAR|
March 2013
vvEPA
United States
Environmental Protection
Agency

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