1. SWG Resource Team Call May 21, 2014

2. 2 1.Convert BA load assumptions to applicable states/provinces 2.Derive the RPS renewable energy requirements for each RPS state 3.Specifying the renewable portfolio 4.Loads and resource balance 5.Distributed generation inputs check Five major steps in the process

3. 3 1.Derive the RPS renewable energy requirements for each RPS state a.Word document with table summarizing RPS statutes/regs: “RPS 2013 Summary Table” b.Spreadsheet: Derivations for each state at “State-Prov Loads-RPS 2024” at Tab “RPS States 2024”; with summary information in “Summary Calculations” and “Summary Results” Review of work to date

4. 4 3. Specifying the renewable portfolio a.Data reconciliation process – integrate this database into spreadsheet for RPS compliance calculations b.Derive RE generators in each state/province and account for sufficient RE for RPS purposes. i.Use the resource data from the date reconciliation process to develop a 2024 spreadsheet 2022 Spreadsheet: “2022 Renewables Final” 2024 Spreadsheet: “140520_2024_RPS_calc” 4. Loads and resource balance a.Subregional spreadsheet model 5. Distributed Generation inputs Review of work to date cont.

5. 5 Examine each state with RPS target and sequentially add in RE generators to meet target o Start with RE generators in WECC category 0 “existing resources” o Then add category 1 “under construction” o Then add category 2 “pre-construction reg approval” o Then add category 3 “future-planned” o Then add category 4 “future-conceptual” o If still short to RPS compliance, add “gap resources” using portfolio ratios consistent with state RE resources Methodology for RPS compliance

6. 6 Added table in each state sheet that calculates GWh from each WECC category 0, 1, 2, 3, 4. o Check to see where RPS compliance occurs Added capability to apportion RPS credits across multiple states o Data from NWPCC data o Data from PacifiCorp compliance filings Adjustments since last call

7. 7 Cross check and validation of 2022 Common Case existing RE with 2024 existing RE generators (CO, OR, WA, UT) Corrections to CO spreadsheet o Total RPS compliance lowered to 10,756 GWh from 11,453 GWh (125% credit to all entities) o Foote Creek III to PSCo from UT o Adjust other generators credit assumption to avoid double counting Adjustments cont.