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Excel Cost of Service Model

Excel Cost of Service Model. Detroit Edison Marty Heiser. Overview . Timeline Purpose of Cost of Service Unbundling Conventions Flow Diagram Features of the Model Overview of Reports Report Hierarchy Demonstration Questions. Timeline for COS Collaborative. Purpose of Cost of Service.

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Excel Cost of Service Model

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  1. Excel Cost of ServiceModel Detroit Edison Marty Heiser

  2. Overview • Timeline • Purpose of Cost of Service • Unbundling Conventions • Flow Diagram • Features of the Model • Overview of Reports • Report Hierarchy • Demonstration • Questions

  3. Timeline for COS Collaborative

  4. Purpose of Cost of Service • Allocate the Company’s revenue deficiency calculation to rate classes in a manner that reflects cost causation • Provide Jurisdictional split for ratemaking • Functionally split revenue requirement

  5. Unbundling Conventions • Model contains separate tabs for each function and one that totals results: • Production (includes transmission) • Distribution (includes customer service) • Total (sum of Production + Distribution) • Allocators • Production Excludes Electric Choice • Distribution Includes Electric Choice

  6. COS Flow Diagram 6

  7. Input 1 Worksheet

  8. Input 2 Worksheet

  9. Function Worksheet

  10. Features of the Model • Employs known and measurable (K&M) change approach for the test year. K&M changes are comprised of changes to Ratebase, Capital Structure, and Net Operating Income • WYSIWG (what you see is what you get) • Output from each tab (Total, Prod & Dist) consists of forty eight 4 page reports (192 pages each) • Standard Page size is 11 columns x 54 rows • Input cells are bold and shaded green in column D of the “Input1” tab • Internal allocation schedule calculations are performed in the Prod and Dist tabs • Rounding column checks to see that sum of allocated columns equals the total

  11. Overview of Reports 11

  12. Hierarchy of Reports 12

  13. Demonstration • Two versions • Section A Historic • Section B Test Year • Hypothetical Changes to Revenue Requirement • Ratebase • O&M

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