1. RTF Update Kevin Smit Kelly Tarp 425-889-2700 ProCost Version 3.0 Modifications A registered professional engineering corporation with offices in the Seattle, Bellingham, and Portland metropolitan areas Telephone (425) 889-2700 Facsimile (425) 889-2725 Consulting EES

2. What is ProCost? 2 It’s the Council’s energy efficiency measure cost- effectiveness model Calculates costs and benefits for EE measures Produces a wide range of results, from different perspectives Developed in MS Excel using various worksheets and the Visual Basic macro functions. Who uses ProCost? The Council: to develop the supply curves for the regional power plans The RTF: for measure and program cost-effectiveness analysis Others including utility personnel, consultants, etc. The current version is “2.3 Build 257f”

3. ProCost Structure 3 Excel Workbooks Excel Worksheets The main ProCost file contains the ProCost VB macro and performs all the calculations. The MC_And_Loadshape file contains data that is read into ProCost.

4. Overall Objectives of V3.0 4 ProCost Functionality Changes: Early Retrofit Measures – savings value changes within the measure lifetime Simultaneous Calculations for Retrofit and Lost Opportunity Measures – enable different risk credit values for each Marginal Line Losses – line loss varies by time segment and conservation load shape Periodic Replacements Costs – End Effects User-defined Time Segments Up to 8760 Hours per Year Documentation User’s Guide Reference Manual

5. Simultaneous Retrofit and LO 5 Lost opportunity measures have higher avoided cost threshold (more valuable to acquire if lost otherwise) Requires two input values for the Risk Mitigation Credit New input row in “ProData”, Utility System Parameter section New Column on measure input/output worksheet:

6. Periodic Replacement Costs 6 End effects for periodic replacement costs – not in V2.3 Added the capability to correctly handle the short remaining portion prior to the end of measure life. Impacts of the following not shown:  Present value time zero  Input cost reference year  Program start date  Sponsor shares Used same partial replacement method used for capital cost end effects

7. Early Retrofit Capability: Measures installed prior to the end of the useful life of pre-conditions baseline 7 Two savings values within a measure life Remaining Useful Life

8. Marginal Line Losses 8 Marginal line losses not in V2.3 Added the capability to handle marginal line losses by time segment (approved by RTF in 2008)

9. Marginal Line Losses (cont.) 9 Changes to user input Results comparison

10. User Defined Time Segments 10 Version 2.3 uses Monthly by 4-Segment = 48 bins/year Added capability for up to 8760 (hourly) time segments Key Components: For testing, EES generated 8760 data from 48 segment data Restructured MC_AND_LOADSHAPE format Load shapes, load factors, and coincidence factors for user defined time segments developed under a separate RTF effort Separate MC_AND_LOADSHAPE file for each segment type (e.g., 48 and 8760 segments) New header in MC_AND_LOADSHAPE

11. User Defined Time Segments (cont.) 11 Challenges: MC_AND_LOADSHAPE file size Current model requires 8760 segments X 20 years for each load shape Separate MC file for each segment type (e.g., 48 and 8760 segments) Current 8760 segment MC file contains just 3 load shapes for testing plus all 20 year price forecasts (65 MB) Suggested calendar function will reduce data to a single year X 8760 segments Estimated file size = 64 MB (1 year X 8760 segments X 200 load shapes) Additional options to reduce file size by condensing data to 1 worksheet 8760 runtime MC file takes approx. 45 sec. to open + additional 45 sec. to run ProCost Static versus dynamic arrays – kept static, but using dynamic could improve efficiency Precision – reduced arrays to single precision from double

12. Testing 8760 Capability 12 EES completed initial testing against 48-bin an analysis Council staff testing impact of change Initial findings to be reported on Feb 20, 2013

13. Documentation 13 User’s Guide How to use ProCost High level “getting started” guide ProCost Reference Manual How ProCost works Every thing else about ProCost

14. What’s Next? 14 Prior to 3.0 Release Integrate the new conservation load shape data and calendar function Stabilize the ProData interface Additional testing and developing of test cases Cost reference year, 2006 Longer Term Items New MC file format Source review New capability for capacity and peak kW Batch processor tool Online version