The Center for Energy and Environment (CEE) is a nonprofit organization that promotes energy efficiency to strengthen the economy and improve the environment. CEE provides engineering services to analyze existing public buildings and implement recommissioning processes to optimize building systems and reduce energy usage. Case studies presented showed recommissioning projects for an office building, hospital, and middle school that achieved energy savings between 11-30% with paybacks of 1.2-3 years. A state public buildings energy efficiency program worked across multiple utility territories and identified common energy savings opportunities through recommissioning of over 30,000 square feet of public building space.
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National Governor’s Association Learning Lab on Public Facilities
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CEE’s Nonprofit Mission
The Center for Energy and Environment (CEE) is a
nonprofit organization that promotes energy efficiency to
strengthen the economy while improving the
environment
• We conduct research and develop programs so that:
• Businesses operate more efficiently and profitably;
• Government agencies and nonprofits spend less on facilities
and functions;
• Utilities achieve their energy-efficiency goals at least-cost; and
• Households save money and improve comfort.
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Who we are
Public Steward
Pragmatic Pioneer
Expert Implementer
Community Resource
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What we do
• Program Design and Delivery
• Lending Center
• Engineering Services
• Innovation Exchange
• Public Policy
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Engineering Services
• Energy Reduction
• Recommissioning
• Energy Efficient Operations
• Performance Monitoring
• Building Energy Performance
• Benchmarking
• Performance Certification
• Energy Star, LEED, Green Buildings
• New Construction
• Commissioning
• Design Assistance
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What is Recommissioning?
Recommissioning is a systematic process to
improve the operation of existing buildings
so they:
• Actually meet the owner’s needs
• Use only as much energy as is necessary
• Optimize existing building systems
• Focus on large savings at low cost
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Case Study:•Office building
• 525,000 ft2
• Cost: $185,960
• Savings: $143,000
• Payback: < 1.3 yr
• Building is now
Energy Star Certified
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Case Study: Hospital
• 600,000 ft2
• Cost: $208,000
• Savings: $180,800
• Payback: 1.2 yr
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Case Study: Middle School
• 230,000 ft2
• Cost: $422,000
• Savings: $141,250
• Payback: < 3.0 yr
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State PBEEEP Program
“Public Buildings Enhanced Energy Efficiency Program” = PBEEEP
Standard Process
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State PBEEP Results
Bldgs Sq Feet Savings Payback
MN State Colleges & Universities 617 19,483,996 $ 760,842 2.4
Department of Administration 22 5,387,308 $ 346,400 5.2
Department of Corrections 212 4,405,484 $ 256,781 6.1
Minnesota State Academies 18 437,079 $ 14,284 2.6
Veterans Affairs 6 276,288 $ 63,176 4.6
Department of Natural Resources 9 226,762 $ 1,033 7.2
Military Affairs 2 194,851 $ 22,681 7.5
Human Services 14 669,505 $ - 0.0
Department of Transportation 2 185,000 $ 10,449 5.5
Perpich Center for Arts Education 3 157,575 $ 21,731 2.9
905 31,423,848 $ 1,497,376 4.4Total
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• 37 different utility companies
• 3 offer study rebates
• 27 of 71 sites had one utility for electric and gas
• Means 2/3 have two utility companies
• All sites realized both electrical and gas savings
• Coordination of programs is uncommon
PBEEEP Worked Across Multiple
Utility Service Territories
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Summary of Most Commonly Identified
Energy Savings Measures
Note that an affected area of 412% means there
were 4.1 measures per building, on average
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Best Practices and Lessons Learned
Without a quality assurance process, we would not have known….
• Qualified providers who understand the specialty of
recommissioning are essential to identify all the
potential savings
• A good customer relationship will increase the rate of
implementation
• Programs should address all energy sources at a site
• Careful selection of buildings is necessary for a cost-
effective program; some buildings have minimal
savings opportunities.