EPA’s Energy Performance
Rating System
May 13, 2008
Be a Leader –
Change Our Environment for the Better
U.S. EPA’s ENERGY STAR®
The U.S. Environmental Protection
Agency (EPA) can help you with
buildings and plants to:
• Reduce energy waste
• Reduce GHG emissions
• Protect the environment
Need for a Rating System for
Buildings
Is 80 kBtu/SF/YR high or low
for a building?
Statement of
Energy
Performance
EPA Rating
Fuel Efficiency
MPG
Is 60 MPG high or low for
an automobile?
Benchmarking – The First Step to
Energy Savings in Buildings
Benchmarking through ENERGY STAR
allows you to:
• Compare one building against a national
sample of similar buildings
• Compare all of your buildings of a similar type
to each other
• Set priorities for use of limited staff time
and/or investment capital
Portfolio Manager – Helping You
Track Your Performance
Free online tool where you can:
• Benchmark the energy use of all of your buildings –
all will receive an energy use intensity (EUI) and
some will receive ratings on a 1-100 scale
• Track changes in energy use over time in single
buildings, groups of buildings, or entire portfolios
• Track cost savings and CO2 emissions
• Apply for ENERGY STAR recognition
• Track water usage
http://www.energystar.gov/benchmark
Ratable Space Types
K-12 Schools Offices Hospitals
Supermarkets Hotels Med. Office Bldgs.
Others include: Warehouse, Residence Halls, Courthouses, Financial Centers,
Retail, Wastewater Treatment Plants
Energy Performance Gap
Top performing
buildings use 3 to 4
times less energy
per ft2 than the
worst performers.
Number of Buildings
39 percent of 42 percent of 35 percent of Newer buildings are
buildings buildings buildings equally represented
with a rating with a rating with a rating across all quartiles.
of 75 or between 25 between 0
better are and 74 are and 24 are Based on a sample
less than 25 less than 25 less than 25
years old years old years old of 4,000 buildings
nationwide.
90 75 50 25 10 1
29.9 86.0 121.1 165.7 339.4
EPA Performance Rating &
Best Performers Worst Performers
Energy Intensity
(kBtu/ft2-year)
Before You Start
Collect Required Information
• Building Identifiers
Name, street address, zip code for weather normalization
• Energy Use
Bldg specific invoice information from all purchased energy
At least 11 consecutive months for each source
• Space Type Data
Square footage, hours of operation, number of students, # of
PC’s,
• Must Meet Codes and have good IAQ
ASHRAE 62, 90.1
Find Portfolio Manager
1. Go to:
www.energystar.gov
2. Click on:
Buildings and Plants
Find Portfolio Manager
3. Click on:
“Portfolio
Manager”
Find Portfolio Manager
3. Click on:
“Portfolio
Manager”
Portfolio Manager
• Log-in Page
• “My Portfolio” Page Layout
– Portfolio Average Rating
– Portfolio Adjusted Percent Energy Reduction
– Views
– “Add Facility”
• Facility Summary Page
– Facility Performance
– Space Use
– Energy Meters
– Water Meters
• Energy Meters
– Add Meter Entries
– Start Date, End Date, kWh, Cost
Use the Rating to:
• Establish portfolio baseline, set goals, measure and
track performance over time
• Verify gains from upgrade efforts
• Require specific rating gains from service providers
in select building types such as office or warehouse
Rating Interpretation
Once you have established an energy performance baseline rating, you
are ready to set improvement goals and create an action plan. The
guide below can help you interpret the ratings and determine
appropriate next steps.
MAINTAIN
ADJUST These top performing
facilities offer examples of
Facilities in this range may best practices as well as
INVEST reap significant savings opportunities to gain
from concentration on recognition. Continue to
Facilities in this range offer the greatest simple, low-cost measures, improve and maintain
opportunity for financial and such as improved superior performance by
environmental improvement. Investing operations and focusing on operations
in new equipment and enhancing maintenance practices. and maintenance.
operational practices may have the Equipment upgrades could
greatest impact on your bottom line. yield additional savings.
1 50 75 100
ENERGY PERFORMANCE RATING
Portfolio Manager Features
• Master account feature
• View (and Reporting) Options
• Statement of Energy Performance
• Percent energy reduction
• Water tracking
• Automated benchmarking
• Multi-Facility Meter Update
Tracking Campaigns:
Master Accounts
• Objective: Allows colleges and universities to track
progress of campaigns, for example:
• University systems can track individual campuses
• Energy saving competitions among residence halls or other buildings
• Process:
• Institution creates a Master Account
• Master Account appears in a public registry
• Individual users can share facilities with Master Account
• Master Account holder can view progress for all facilities that have been
shared
View (and Reporting) Options
• The “My Portfolio” page uses views to display summarized data
• A view is a set of columns that display various data in a table
• Portfolio Manager provides the ability for a user to create their own
view by selecting the columns (up to seven at a time) to display on
the My Portfolio page
• It also enables the user to select the number of facilities that can
display on the My Portfolio page (e.g., 25, 50). There are over 30
different data columns that can be selected
• Any view can be set as the default view and these views can be
downloaded into a Microsoft Excel spreadsheet for further analysis
Statement of Energy Performance
• Objective: The SEP can be generated for purposes other
than applying for the ENERGY STAR Label
• LEED-EB certification process
• Real estate transactions
• Maintaining a Facility Summary Report
• Process:
• User selects time period of performance
• Tool generates 1 page summary with energy use, cost, and
emissions figures
• Summary also included as second page when full SEP is generated
to apply for the ENERGY STAR
Percent Energy Reduction
• Objective: Provide a metric to show a percent change in
energy use over time
• Creates tracking capability for all space types
• Process:
• For non-ratable spaces the tool compares weather normalized
source energy use between two periods and adjusts for any
changes in square footage
• For ENERGY STAR ratable space types, the tool compares
energy use between two periods adjusting for changes in
weather and business activity
Water Tracking
• Objective: Allow users to track water use in Portfolio
Manager
• Continued emphasis on tracking all utilities
• Lay groundwork for understanding the relationships between water and
energy use
• Process:
• User can select “Add Water Meter” for any facility
• User can identify water meters as indoor, outdoor, or wastewater
• Tool displays water use totals for any 12 month period
• User can compare two different periods and track over time
• Upcoming Enhancement: percent change between
two time periods will be displayed
Multi-Facility Meter Update
• Objective: Provide the ability to easily update meter data for
a large number of facilities, greatly increasing the efficiency
for meter updates
• Process:
• Users select the facilities in their portfolio (maximum of 250 per download). A
Microsoft Excel spreadsheet lists each facility and the specified number of
meter data entries (billing cycles)
• Once meter data is entered and saved, the spreadsheet is uploaded. Users
can review and edit the data before uploading it to Portfolio Manager
• This feature is used to update meter data; it will not overwrite or replace meter
data that already exists in Portfolio Manager
Automated Benchmarking
Allows utilities and energy info service providers to:
• Securely exchange building and utility data with the
EPA ENERGY STAR program
• Leverage the ENERGY STAR rating within their own
systems
• Reduce the burden on energy end users of
benchmarking their energy performance
Recognition Opportunities
for Eligible Spaces
• Estimate Energy Use at Design
• Target Finder
• Designed to Earn the ENERGY STAR
• Verify energy use in operation
• Portfolio Manager
• ENERGY STAR for buildings
• ENERGY STAR Leaders for Portfolio-Wide
Improvements of 10 percent, 20 percent, 30
percent, or more