GrocerSmart™ 4.0 RTF Subcommittee Approval of Adherence to Guidelines March 10, 2011

RTF Approval Schedule March 10 Review PECI’s approach to RTF guideline adherence March 17 Review updates to documentation in preparation for full RTF presentation April 5 Presentation to full RTF – Validation, Calibration, and Documentation of GrocerSmart 4.0

3 Today we will: Discuss PECI’s validation of energy savings calculated by GrocerSmart 4 Review PECI’s documentation format and approach to transparency

Validation

5 TestingPilot Roll Out In Market Changing Code Validating Results Continuous Improvement Time Operational Parameters Check Acceptable Ranges of Energy Savings

6 Operational Parameters 1. Building Level 2. System Level 3. Component Level

7 Operational Parameters 1. Building Level 2. System Level 3. Component Level Validation Question: Is the modeled building functioning in an expected way? Sources: Parameter: Grocery Energy Use Index (EUI) CBSA – Northwest Commercial Stock Assessment CBECS – Commercial Building End Use Survey StudykWh EUIGas EUI CBSA42.5 kWh/sft.53 Therm/sft CBECS55.4 kWh/sft.32 Therm/sft

8 Operational Parameters 1. Building Level 2. System Level 3. Component Level Validation Question: Are building systems operating at expected levels as modeled? Sources: Parameters: Normalized energy use Allocation CBECS – Commercial Building End Use Survey NC Modeling - 8 stores SourceCBECSNC% of building Lighting kWh/sft 11 HVAC kWh/ton 12 Refrig kWh/mbh 36

9 Operational Parameters 1. Building Level 2. System Level 3. Component Level Validation Question: Are components operating with expected energy performance? Sources: Parameters: Energy use/unit MAX energy use per component Metered Data Historic Program Data NC Modeling AHRI Others Energy Use/Unit SourceMetered DataProgram DataNC Fixtures Compressors Condensers

10 TestingPilot Roll Out In Market Changing Code Validating Results Continuous Improvement Time Operational Parameters Acceptable Ranges

11 Acceptable Ranges Case Motors: Shaded Pole Motors to ECMs GrocerSmart™ Result: 190 Savings Annual kWh per unit Annual Therm per unit Measure Climate ZoneVintage Realization %HighLowHighLowUnitDev Cases: Shaded pole motor to ECM11130% na len 10% Cases: Shaded pole motor to ECM

12 Acceptable Ranges Case Motors: Shaded Pole Motors to ECMs GrocerSmart™ Result: 300 QuickNumber: 190 Used at point of customer contact to inform EE investment. Audit is processed by engineering team to determine correct savings and improve GS4. Savings Annual kWh per unit Annual Therm per unit Measure Climate ZoneVintage Realization %HighLowHighLowUnitDev Cases: Shaded pole motor to ECM11130% na len 10%

Calibration

14 Calibration Calibration strategy What will be adjusted in template What data will be used Surveys Utility-supplied data M&V data Studies

Documentation

16 Documentation BDL Documentation Template Code : Modeling code that is not dependant on audit information Audit Object Code : Modeling code that is dependant on audit information Measure Code : Changes made to baseline modeling code to simulate measures