ADS V1.0 RPS Check

1. ADS V1.0 RPS Check Tyler Butikofer Tom Carr Western Electricity Coordinating Council

2. Collected all generation that complies with RPS goals • Allocated the generation to state/providence • Are • Calculated RPS requirements for each state/providence • Calculated if RPS requirements are met for each state/providence Brief Review of Process Western Electricity Coordinating Council

3. Energy Requirement Western Electricity Coordinating Council

4. RPS Summary by Development Status Western Electricity Coordinating Council

5. Load Served by State and Type (GWh) Western Electricity Coordinating Council

6. Load Served by State and Type Western Electricity Coordinating Council

7. Questions? tbutikofer@wecc.biz 801-819-7604 Western Electricity Coordinating Council

8. Calculating RPS Targets Appendix A Western Electricity Coordinating Council

9. RPS Check for RAC/WECC Studies Thomas Carr Western Interstate Energy Board January 31, 2018 Western Electricity Coordinating Council

10. General RPS framework Identify key RPS provisions for states/provinces Derive state/provincial loads and sales from BA forecasts Calculate RPS energy targets (GWh) for each state/province How to calculate RPS energy targets for states/provinces in the Western Interconnection

11. General rule across jurisdictions: General RPS Framework • Base (GWh) x Rate (%) = RPS RE (GWh) RPS RE = Target level of renewable energy Rate = Percentage of electricity sales that must be from renewable generation (e.g., wind, solar, geothermal, biomass) Base = Sales of electricity by utilities covered by the RPS policy (e.g. IOUs, coops, munis, etc) Western Electricity Coordinating Council

12. WECC collects load forecasts from Balancing Areas (BA) • Allocate 40 BA load forecasts into 12 states, 2 provinces, MX • 9 BAs cover multiple states 2c. Derive State/Provincial loads and sales from BA forecasts

13. - Allocate BA load to each state/province - Convert loads to sales assuming 6% T&D loses - Sum across each state/province - California updated by CEC forecast CED 2015-25 State/Province Loads and Sales Western Electricity Coordinating Council

14. State/Province Loads and Sales cont.

15. 9 BAs with footprint over multiple states Western Electricity Coordinating Council

16. Apply policy rules for each jurisdiction • Base (GWh) x Rate (%) = RPS RE (GWh) 2d. Calculate RPS Targets

17. 2028 Loads, Sales and RPS Targets Western Electricity Coordinating Council

18. Gathering RPS Units and Allocating to States/Providences Appendix B Western Electricity Coordinating Council

19. Select all renewable sub-types that apply • Biomass • DG-BTM • Geothermal • Hydro RPS (California) • Solar PV • Solar Thermal • Wind Turbine Gathering RPS Units Western Electricity Coordinating Council

20. If located in Alberta or California, allocated to Alberta or California, respectively If located in other states, looked for Power Purchase Agreements (PPAs) or other data from energy websites or utility websites (reference is sited in workbook) If we couldn’t locate PPAs, the resource was allocated to the state for which it was locate for states with a RPS Determining State/Prov Allocations Western Electricity Coordinating Council