1. EDISON INTERNATIONAL® SM Internal Use Only Page 1 Commercial Variable Speed Swimming Pool Pump Jason Wang Cal TF Work Paper Presentation October 23, 2014

2. EDISON INTERNATIONAL® SM Internal Use Only Page 2 Agenda Objective: Seeking TF approval of draft workpaper Measure Description Work Paper Methodology Results Issues and Concerns Questions or Comments

3. EDISON INTERNATIONAL® SM Internal Use Only Page 3 Measure Description Measure Case Variable speed pool pump Integrated pump, motor, and controller unit Can be programmed for different speeds at different times High efficiency motor Base Case Single speed pool pump Typically operates 24/7 Size ranges from 0.5 to 3 HP Fixed speed of 3,450 rpm

4. EDISON INTERNATIONAL® SM Internal Use Only Page 4 Measure Description Units: Per horsepower Measure Application and Delivery Type 1.Direct Install (ER or ROB depending on pump condition) 2.Downstream Prescriptive Rebate (ROB) Eligibility Climate zones: All Building types: Hotels, Motels, Assembly Target Market Lodging facilities with standard (non-Olympic) size pools Assemblies: Fitness centers, clubs, public pools, etc. Market Potential About 8,700 commercial pools in SCE territory

5. EDISON INTERNATIONAL® SM Internal Use Only Page 5 Measure Description Measure Costs Baseline cost (material + labor): $700 Measure cost: $1,650 Incremental cost: $950 EUL 10 years (DEER EUL ID: OutD-PoolPump) Net-to-Gross 0.85 (DEER EUL ID: ET-Default)

6. EDISON INTERNATIONAL® SM Internal Use Only Page 6 Work Paper Methodology Baseline Data Collection Building typeSites surveyed ParametersMarket Assessment Lodging50Operating schedules Equipment specs Pool system characteristics Voltage, current, power factor Good candidates. Mostly single speed pumps ≤ 3 HP, operating 24/7. Assemblies31 Schools46Pools too large Baseline Methodology – Early Retirement ER:

7. EDISON INTERNATIONAL® SM Internal Use Only Page 7 Work Paper Methodology Baseline Methodology – Replace on Burnout ROB: HPNon QualifyingTitle 20 QualifyingAdjustment Factor 0.562%77%81% 0.7563%76%83% 166%76%87% 1.565%76%86% 267%79%85% 2.570%77%91% 370%79%89% Codes and Standards Enhancement study

8. EDISON INTERNATIONAL® SM Internal Use Only Page 8 Work Paper Methodology Measure Data Collection CEC System Curves System Curve C used to represent pool plumbing system

9. EDISON INTERNATIONAL® SM Internal Use Only Page 9 Work Paper Methodology Measure Data Collection CEC Pool Pump Test Database Variable speed pump power consumption

10. EDISON INTERNATIONAL® SM Internal Use Only Page 10 Work Paper Methodology Measure Methodology Code Requirements (Public Pools) Title 24: Must be capable of 6-hour turnover Title 22: Cannot lower flow below 65% of Title 24 levels Title 20: Two speed required for Res pool pumps ≥ 1 hp Proposed: SS ≥ 70% efficiency, VS ≥ 80% @ full, ≥ 70% at half

11. EDISON INTERNATIONAL® SM Internal Use Only Page 11 Work Paper Methodology Measure Methodology Pool Closed – Required Flow Rate (minimum 25 gpm, minimum 0.12 kW) Pool Open – Required Flow Rate (minimum 25 gpm)

12. EDISON INTERNATIONAL® SM Internal Use Only Page 12 Results Application TypekWh SavingskW ReductionTherm Savings ER7,4410.590 ROB5,5860.360 Results Averaging Exclude existing multi-speed pumps Exclude pumps > 3 HP Exclude pools where a single 3 HP pump cannot meet required flow rate Straight average

13. EDISON INTERNATIONAL® SM Internal Use Only Page 13 Issues and Concerns – Cal TF Comments Abstract Review Comments from the Cal TF Health specifications Methodology ensures that variable speed pool pumps meet health code. Persistence issues Technician errors will be reduced by using qualified contractors and offering training. XECM motor retrofit This is a separate measure to be considered.

14. EDISON INTERNATIONAL® SM Internal Use Only Page 14 Issues and Concerns – Future Updates Field Testing in Progress Five sites currently being tested and monitored Preliminary results: SitekWh SavingskW Reduction 1TBD0.40 2TBD 3 4 5 Work Paper (ER)7,4410.59

15. EDISON INTERNATIONAL® SM Internal Use Only Page 15 Additional material and labor costs Permitting fees: Program works with county to reduce fees. Replacement flow meters, valves, etc. may be required. Costs are not borne by program. Turnover Requirements Many pumps not meeting turnover requirement (6 hours/turnover). Not SCE’s role to enforce code. Issues and Concerns – Future Updates

16. EDISON INTERNATIONAL® SM Internal Use Only Page 16 Questions or Comments?