measurement & verification - maeep ppt 8... · measurement” – baseline is an engineering...
TRANSCRIPT
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Measurement & Measurement & VerificationVerification
““You cannot manage what you do You cannot manage what you do not measurenot measure”” –– Jack Welch, Jack Welch, former CEO, General Electricformer CEO, General Electric
11
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
What is M&V?What is M&V?
““The process of using measurements The process of using measurements to reliably determine actual savings to reliably determine actual savings created within an individual facility by created within an individual facility by an energy management programan energy management program””
Source: IPMVP Volume I – September, 2009
22
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Why Measure & Verify?Why Measure & Verify?
Increase energy savings due to reporting Increase energy savings due to reporting feedback (uncovers new opportunities)feedback (uncovers new opportunities)
Creates persistence of energy savingsCreates persistence of energy savings
Reduce financial risk and create a base for Reduce financial risk and create a base for negotiations with energy performance contractsnegotiations with energy performance contracts
Improves credibility of energy efficiencyImproves credibility of energy efficiency
LEED EB O&M requires M&V for EA Credit 2.3 LEED EB O&M requires M&V for EA Credit 2.3 ““Ongoing CommissioningOngoing Commissioning””
PayPay--forfor--performance incentives for performance incentives for RCxRCx33
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
EVO and IPMVPEVO and IPMVP
Efficiency Valuation Organization (EVO)Efficiency Valuation Organization (EVO)–– Established to create standards which assist with Established to create standards which assist with
risk and benefit management in the context of risk and benefit management in the context of energy efficiencyenergy efficiency
International Performance Measurement and International Performance Measurement and Verification Protocol (IPMVP)Verification Protocol (IPMVP)–– Created to support and promote energy efficiency Created to support and promote energy efficiency
and renewable energy worldwideand renewable energy worldwide
Latest Version of Vol. I Latest Version of Vol. I -- January 2012January 2012
44
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Elements of M&VElements of M&V
The M&V PlanThe M&V Plan–– Prior to project implementationPrior to project implementation–– Establishes method for measuring and adjusting Establishes method for measuring and adjusting
energy use to verify savingsenergy use to verify savings–– Documents requirements for M&V ReportsDocuments requirements for M&V Reports
The M&V ReportThe M&V Report–– Periodic documentation of observed energy use Periodic documentation of observed energy use
and verified savings after project implementationand verified savings after project implementation–– Includes justification for usage adjustmentsIncludes justification for usage adjustments
55
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
IPMVP OptionsIPMVP Options
The The ““bestbest”” option depends onoption depends on……–– BudgetBudget–– MeteringMetering–– Scope of Scope of EEM(sEEM(s))
Multiple Options may be used within Multiple Options may be used within an M&V Plan, depending on the an M&V Plan, depending on the considerations aboveconsiderations above
66
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
IPMVP IPMVP –– Option AOption A
““Retrofit Isolation: Key Parameter Retrofit Isolation: Key Parameter MeasurementMeasurement””–– Baseline is an engineering calculation Baseline is an engineering calculation
which could involve shortwhich could involve short--term metering, term metering, continuous metering, or an engineering continuous metering, or an engineering estimateestimate
–– Good for measures with consistent Good for measures with consistent energy consumption (i.e. lighting, energy consumption (i.e. lighting, constant speed fans)constant speed fans)
77
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
IPMVP IPMVP –– Option BOption B
““Retrofit Isolation: All Parameter Retrofit Isolation: All Parameter MeasurementMeasurement””–– Energy use is either measured directly or Energy use is either measured directly or
a calculation a calculation which is based on a which is based on a measurementmeasurement
–– Good for systems with known Good for systems with known performance curves where an isolated performance curves where an isolated measurement can be used to calibrate measurement can be used to calibrate energy consumption (i.e. energy consumption (i.e. VSDsVSDs))
88
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
IPMVP IPMVP –– Option COption C
““Whole FacilityWhole Facility””–– Energy use Energy use meteredmetered at the whole facility at the whole facility
level or sublevel or sub--facility levelfacility level–– Good for complex Good for complex EEMsEEMs which affect which affect
multiple systemsmultiple systems
99
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
IPMVP IPMVP –– Option DOption D
““Calibrated SimulationCalibrated Simulation””–– Energy use is simulated with energy Energy use is simulated with energy
modeling software (such as modeling software (such as eQUESTeQUEST or or EnergyProEnergyPro) and calibrated using monthly ) and calibrated using monthly utility billsutility bills
–– Good for facilities where no baseline data Good for facilities where no baseline data is available (i.e. new construction)is available (i.e. new construction)
1010
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Creating an M&V PlanCreating an M&V Plan
1)1) Create a list of building systems and Create a list of building systems and system components with their system components with their energy consumption characteristics energy consumption characteristics (power draw, firing rates, etc.)(power draw, firing rates, etc.)
2)2) Determine goals for M&V (specific Determine goals for M&V (specific EEM isolation = Options A & B, whole EEM isolation = Options A & B, whole facility = Options C &D)facility = Options C &D)
1111
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Creating an M&V PlanCreating an M&V Plan
3)3) Determine which quantities need to Determine which quantities need to be metered and which can be be metered and which can be estimated (if using Option A or B)estimated (if using Option A or B)
1212
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
M&V Plan ContentsM&V Plan Contents
1)1) ECM Description, Intent, and ECM Description, Intent, and Commissioning ProcedureCommissioning Procedure
2)2) Select IPMVP Option and Select IPMVP Option and Measurement BoundaryMeasurement Boundary
3)3) Baseline Conditions: Include energy Baseline Conditions: Include energy use and quantify factors which affect use and quantify factors which affect energy useenergy use
1313
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
M&V Plan ContentsM&V Plan Contents
4)4) Identify the reporting periodIdentify the reporting period5)5) Identify whether data will be Identify whether data will be
normalized (if so, savings will be normalized (if so, savings will be ““normalized savingsnormalized savings””, if not savings , if not savings will be will be ““avoided energy useavoided energy use””))
6)6) Analysis Procedure: define all Analysis Procedure: define all mathematical models to be used and mathematical models to be used and any limits to their validityany limits to their validity
1414
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
M&V Plan ContentsM&V Plan Contents
7)7) Energy Prices: Identify if they will be fixed Energy Prices: Identify if they will be fixed or variable for reporting purposesor variable for reporting purposes
8)8) Metering: Identify meter locations and Metering: Identify meter locations and specspec’’s, s, CxCx, and calibration procedures for , and calibration procedures for all nonall non--utility meters. Establish upper limit utility meters. Establish upper limit on acceptable data loss. on acceptable data loss.
9)9) Monitoring Responsibilities: Identify Monitoring Responsibilities: Identify responsible parties for data recording and responsible parties for data recording and reportingreporting
1515
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
M&V Plan ContentsM&V Plan Contents
10)10) Expected Accuracy: Include meter Expected Accuracy: Include meter tolerances, and uncertainty associated with tolerances, and uncertainty associated with sampling error and any engineering sampling error and any engineering calculationscalculations
11)11) Budget: Include setup cost and onBudget: Include setup cost and on--going going reporting costsreporting costs
12)12) Report Format: Include a sample reportReport Format: Include a sample report13)13) Quality Assurance: Specify steps taken Quality Assurance: Specify steps taken
towards QA of savings calculation & towards QA of savings calculation & reportingreporting
1616
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
M&V ReportingM&V Reporting
Must follow procedures identified in the Must follow procedures identified in the M&V PlanM&V PlanInclude:Include:–– Complete data sets (justification for any Complete data sets (justification for any
““correctedcorrected”” data)data)–– Description and justification of adjustmentsDescription and justification of adjustments–– Any estimated valuesAny estimated values–– Energy price scheduleEnergy price schedule–– Savings in energy and monetary unitsSavings in energy and monetary units
1717
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Example:Example:
320,000ft320,000ft2 2 office building in Eastern office building in Eastern MA with extensive subMA with extensive sub--meteringmetering
Option C (subOption C (sub--facility level), not facility level), not weatherweather--normalized, baseline still normalized, baseline still being developed (new facility)being developed (new facility)
1818
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Electricity UseElectricity Use
Raw Values November December %∆ Nov-Dec January %∆ Dec-JanOutdoor Lighting 3,364 3,548 5.46% 3,523 -0.7%1st Floor - Lights 15,619 16,861 7.95% 16,987 0.7%1st Floor - Motors 487 501 2.77% 533 6.1%2nd Floor - Lights 15,925 17,797 11.76% 17,578 -1.2%2nd Floor - Motors 2,569 3,024 17.71% 3,138 3.6%3rd Floor - Lights 15,928 17,563 10.26% 17,094 -2.7%3rd Floor - Motors 2,838 5,293 86.52% 3,149 -68.1%RTUs 47,022 45,174 -3.93% 38,133 -18.5%UPS 20,047 20,608 2.80% 20,552 -0.3%Lieberts 25,765 21,660 -15.93% 20,954 -3.4%Kitchen Mechanical 6,293 6,413 1.90% 5,813 -10.3%Kitchen Lights 4,719 4,810 1.94% 4,604 -4.5%HVAC other 24,276 24,669 1.62% 24,118 -2.3%Receptacles, Misc. Loads 94,952 100,403 5.74% 110,267 8.9%Kitchen Exhaust (included in KL41 meter) 1,977 1,977 0.00% 1,950 -1.4%HW Pumps (included in MP41 meter) 1,861 1,861 0.00% 2,364 21.3%
Sub-Totals
1919
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Natural Gas UseNatural Gas Use
November December January unit %∆ Nov-Dec %∆ Dec-JanKitchen Gas 117,100 146,600 121,700 cubic ft 25.2% -17.0%Main Gas 337,000 852,000 962,000 cubic ft 152.8% 12.9%Total Gas 454,100 998,600 1,083,700 cubic ft 119.9% 8.5%
% Kitchen Gas 25.79% 14.68% 11.23%% Main Gas 74.21% 85.32% 88.77%
2020
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
OneOne--Month EndMonth End--Use Use ReconciliationReconciliation
January 2010 Electricity End‐Use Reconciliation
Total KWh = 286,000
Outdoor Lighting, 3,500 , 1% 1st Floor ‐ Lights, 17,000 , 6%
1st Floor ‐ Motors, 500 , 0%
2nd Floor ‐ Lights, 17,600 , 6%
2nd Floor ‐ Motors, 3,100 , 1%
3rd Floor ‐ Lights, 17,100 , 6%
3rd Floor ‐ Motors, 3,100 , 1%
RTUs, 38,100 , 13%
UPS, 20,600 , 7%
Lieberts, 21,000 , 7%
Kitchen Mechanical, 5,800 , 2%Kitchen Lights, 4,600 , 2%
HVAC other, 24,100 , 8%
Receptacles, Misc. Loads, 110,300 , 40%
Outdoor Lighting 1st Floor ‐ Lights 1st Floor ‐ Motors 2nd Floor ‐ Lights 2nd Floor ‐ Motors3rd Floor ‐ Lights 3rd Floor ‐ Motors RTUs UPS LiebertsKitchen Mechanical Kitchen Lights HVAC other Receptacles, Misc. Loads
2121
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Monthly Electric Use Monthly Electric Use ComparisonComparison
November 09' Total KWh = 280K
Lighting, 56,000 , 20%
Mechanical, 129,000 , 46%
Receptacles, 95,000 , 34%
December 09' Total KWh = 288K
Lighting, 61,000 , 21%
Mechanical, 127,000 , 44%
Receptacles, 100,000 , 35%
January 2010 Total kWh = 286k
Lighting, 60,000 , 21%
Mechanical, 116,000 , 41%
Receptacles, 110,000 , 38%
Lighting
Mechanical
Receptacles
2222
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Monthly Gas Use Monthly Gas Use ComparisonComparison
November 09' Total Gas used = 454K ft^3
Main Gas, 337,000 , 74%
Kitchen Gas, 117,100 , 26%
December 09' Total Gas used = 999K ft^3
Main Gas, 852,000, 85%
Kitchen Gas, 146,600, 15%
January 2010 ‐ Total Gas = 1,083k ft^3
Main Gas, 962,000, 89%
Kitchen Gas, 121,700, 11%
Kitchen Gas
Main Gas
2323
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Example:Example:
A 95,700ftA 95,700ft22 office building in Eastern office building in Eastern MA. MA. RCxRCx project began late 2008 project began late 2008 continuing through 2009continuing through 2009
Option D: Baseline and PostOption D: Baseline and Post--RCxRCx both both modeled in Trane TRACEmodeled in Trane TRACE
Reporting Period: April 2009 Reporting Period: April 2009 –– March March 2010 (Electrical) and November 2007 2010 (Electrical) and November 2007 –– September 2008 (Gas) September 2008 (Gas)
2424
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Electricity Use: Model Electricity Use: Model Compared with ActualCompared with Actual
0
50,000
100,000
150,000
200,000
250,000
300,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
kWh
BaselinePost-RCx PredictedActual
2525
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Electrical Use: HistoricalElectrical Use: Historical
0
50,000
100,000
150,000
200,000
250,000
300,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
kWh
2007200820092010
2626
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Electric Demand: Model Electric Demand: Model Compared with ActualCompared with Actual
0
200
400
600
800
1000
1200
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
kW
BaselinePost-RCx PredictedActual
2727
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Electric Demand: Electric Demand: HistoricalHistorical
0
200
400
600
800
1000
1200
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
kW
2007200820092010
2828
B2Q Associates, Inc. B2Q Associates, Inc. ©© Part 13Part 13
Natural Gas Use: Model Natural Gas Use: Model Compared with ActualCompared with Actual
0
500
1000
1500
2000
2500
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
ther
ms Baseline
Post-RCx PredictedActual, Normalized
2929