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Transcript of High Performance Buildings Congressional Caucus Coalition April 11, 2012 Washington, DC Bruce D....
High Performance BuildingsCongressional Caucus Coalition
April 11, 2012Washington, DC
Bruce D. HunnASHRAE
ENERGY EFFICIENCY GUIDE for EXISTING COMMERCIAL
BUILDINGS
ENERGY EFFICIENCY GUIDE for EXISTING COMMERCIAL
BUILDINGS
Two-part series in collaboration with BOMA and GSA:
• The Business Case for Building Owners and Managers
• Technical Implementation
Developed by
ASHRAE, AIA, IESNA, USGBC, DOE
The Business Case for Building Owners and Managers
Authors:
Landsberg
Lord
Carlson
Goldner
Business Case: Purpose
• To equip decision makers to act to improve Building energy efficiency Operational performance
• Provides rationale for making economic decisions regarding energy efficiency in existing commercial buildings
• For owners, managers, operators, tenants, investors, and lenders
Business Case: Purpose
Energy efficiency opportunities are underrealized in existing buildings,
especially in investment property sector (86% of U.S. building construction
expenditures in renovation of existing stock)
Bottom line:
“Energy efficient, green buildings aren’t just good for the environment, they are good for business”
TABLE OF CONTENTS
1) Introduction
2) Measuring Energy Efficiency and Setting Goals
3) Improving Energy Performance
4) Making the Business Case
5) Developing an Effective O&M Program
MEASURING ENERGY EFFICIENCY AND SETTING GOALS
• Energy Utilization Index (EUI in kBtu/ft2-yr)
• Benchmarks:Self referencingPortfolio referencing Peer buildings
through ENERGY STAR Portfolio Manager and/or CBECS
Copyright ASHRAE. EEG ECB The Business Case
IMPROVING ENERGY EFFICIENCY
• Energy efficiency plan• Integrated approach: whole-building as
set of integrated systems and drivers (envelope, lighting, HVAC, climate, occupants)Operational adjustmentsUse free energy (OA, daylighting)Recover waste energyIncrease equipment efficiencyChange occupant behavior, purchasing
IMPROVING ENERGY EFFICIENCY
Analyze energy end use:
Audits and Commissioning
Copyright ASHRAE. EEG ECB The Business Case
OPPORTUNITIES BY END USELIGHTING
Lamps, ballasts, fixtures, controls
Copyright ASHRAE. EEG ECB The Business Case
OPPORTUNITIES BY END USEBUILDING ENVELOPE
• Insulation• Shading
ENERGY DISTRIBUTION• Ventilation • Energy recovery
HEATING/COOLING, WATER HEATING• Equipment efficiency• Part-load operation• Controls
Copyright ASHRAE. EEG ECB The Business Case
MAKING THE BUSINESS CASE• Barriers to energy efficiency
Capital constraintsCollateral issuesHolding period biasSplit incentives
• SolutionsEnergy performance contractingGreen leasesGovernment/institutional incentives
MAKING THE BUSINESS CASE
• Evaluating risksMarketRegulatoryEnvironmental
Copyright ASHRAE. EEG ECB The Business Case
MAKING THE BUSINESS CASE
• Financial AnalysisSimple payback periodNet Present Value (NPV)Internal Rate of Return (IRR)Life-cycle costing (LCC)Calculating cash flows and savings of an
EEM
DEVELOPING O&M PROGRAM
• Elevate energy management importance
• Require systems manual• Efficient operations in O&M• Invest in training• Performance monitoring and
reporting
Copyright ASHRAE. EEG ECB The Business Case
Technical ImplementationAuthors: Landsberg, Carlson, Goldner,
MacDonald, Slosberg
Technical Implementation: Purpose
• To demonstrate ways to:Measure energy efficiencyTrack energy efficiencyDevelop energy efficiency planImplement the efficiency plan
• Intended for building engineers and managers; assumes working technical knowledge of building systems
TABLE OF CONTENTS
1) Introduction
2) General Considerations
3) Measuring Energy Performance and Setting Goals
4) Understanding Energy Use and End-Use/System Efficiency
5) Selecting Energy Efficiency Measures
6) Refining Financial Analysis and Setting Priorities
7) Putting the Process Together