SPP-RTO: Operational Characteristics

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2 SPP-RTO: Operational Characteristics Derek Hawkins, Supervisor Real Time Support May 23, 2018 SouthwestPowerPool SPPorg southwest-power-pool 2

3 The SPP Footprint: Members in 14 States Arkansas Kansas Iowa Louisiana Minnesota Missouri Montana Nebraska New Mexico North Dakota Oklahoma South Dakota Texas Wyoming Our Mission Helping our members work together to keep the lights on today and in the future. 3

4 North American Independent System Operators (ISO) and Regional Transmission Organizations (RTO) Summer Peak: 50,622 MW Winter Peak: 43,584 MW Minimum Load: ~20,500 MW 4

5 Operating Region Miles of service territory: 546,000 Population served: 17.5M Generating Plants: 795 Substations: 4,929 Miles of transmission: 66, kv 16, kv 15, kv 9, kv 5, kv 7, kv 11, kV 92 5

6 GENERATING Capacity* by Fuel Type (87,086 MW total) * Figures refer to nameplate capacity as of 1/1/18 6

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8 2017 Energy Production by Fuel Type (259,554 GWh total) 6.8% 0.6% 0.2% 19.5% Gas (19.5%) Coal (46.3%) Hydro (4.1%) Wind (22.7%) Nuclear (6.8%) Other (0.3%) Solar (0.2%) 22.7% 4.2% 46.3% 8

9 Wind in SPP s System Wind installed today: 17,796 MW Maximum wind output: 15,690 MW (12/15/17) Wind Capacity MW (1/1/2018 5/8/2018) >14GW, 25 days >14.5GW, 10 days >15GW, 0 days Largest windfarm: 400 MW (Grand Prairie in Holt County, NE) Unbuilt wind w/signed interconnection agreements: ~10 GW Wind in all stages of study and development: ~60 GW Forecast wind installation in 2020: >20 GW (more than SPP s current minimum load) 9

10 Wind Capacity Installed By Year Yearly Installed Capacity Total Installed Capacity Future Trend Based on 17-Year History Future Trend Based on 9-Year History Forecasted End of the Year Installed Capacity SPP Annual Peak Load SPP Annual Minimum Load 10

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12 Wind Penetration Maximum wind penetration: Instantaneous: 63.96% (4/30/18) Hourly Average: 62.89% (4/29/2018) Daily Average: 54.1% (4/29/2018) Wind Penetration Highs (1/1/2018 5/8/2018) >60%, 6 days >50%, 40days Average wind penetration (2017): ~25% Max wind swing in one day: >10 GW (12.5 GW to 2 GW back to 12 GW) Max 1-hour ramp: 3,700 MW 12

13 Annual Average Wind Speeds 13

14 Pending GI Requests Steam Turbine, 29 Natural Gas, 1,879 Storage, 1,212 Solar, 17,667 Wind, 60,770 MW Requested by Generation Type May 11,

15 Solar in the U.S. Solar in SPP 15

16 Focus on renewable forecast accuracy Offline and online VSAT PMU siting on new generation Flexible product evaluation Planning process enhancements Identify and monitor increased risk scenario contributors 16

17 Interchange Capabilities 17

18 Flowgate Name Region Flowgate Location 2017 Congestion Patterns WDWFPLTATNOW NEORIVNEOBLC PLXSUNTOLYOA SHAHAYPOSKNO Western Oklahoma SE Kansas / SW Missouri West Texas (Lubbock) Western Kansas Woodward - FPL Switch 138 kv ftlo Tatonga - Northwest 345 kv (OGE) Neosho - Riverton 161 kv (WR-EDE) ftlo Neosho - Blackberry 345 kv (WR- AECI) Plant X Sub - Sundown 230 kv ftlo Tolk - Yoakum 230 kv (SPS) South Hays - Hays 115 kv ftlo Post Rock - Knoll 230 kv (MIDW) VINHAYPOSKNO Western Kansas Vine - Hays 115 kv ftlo Post Rock - Knoll 230 kv (MIDW) CARLPDLUBWOL West Texas (Lubbock) Carlisle - Doud 115 kv ftlo Lubbock South - Wolfforth 230 kv (SPS) HANMUSAGEPEC Oklahoma City area Hanncock - Muskogee 161 kv ftlo Agency - Pecan Creek 161 kv (OKGE) SILSPRTONFLI NW Arkansas Siloam - Siloam Springs 161 kv ftlo Tonnece - Flint Creek 345 kv (CSWS- GRDA) OSGCANBUSDEA TX Panhandle (Amarillo) Osage Switch - Canyon East 115 kv ftlo Bushland - Deaf Smith 230 kv (SPS) FRASPECOLMEA Eastern SD / Nebraska Border Ft. Randall - Spencer 115 kv (NPPD- WAUE) ftlo Meadow Grove - Kelly 230 kv (NPPD) 18

19 Flowgate Name Region Flowgate Location WDWFPLTATNOW Western Oklahoma Woodward - FPL Switch 138 kv ftlo Tatonga - Northwest 345 kv (OGE) NEORIVNEOBLC SE Kansas / SW Missouri Neosho - Riverton 161 kv (WR-EDE) ftlo Neosho - Blackberry 345 kv (WR- AECI) PLXSUNTOLYOA West Texas (Lubbock) Plant X Sub - Sundown 230 kv ftlo Tolk - Yoakum 230 kv (SPS) SHAHAYPOSKNO Western Kansas South Hays - Hays 115 kv ftlo Post Rock - Knoll 230 kv (MIDW) VINHAYPOSKNO Western Kansas Vine - Hays 115 kv ftlo Post Rock - Knoll 230 kv (MIDW) CARLPDLUBWOL West Texas (Lubbock) Carlisle - Doud 115 kv ftlo Lubbock South - Wolfforth 230 kv (SPS) HANMUSAGEPEC Oklahoma City area Hanncock - Muskogee 161 kv ftlo Agency - Pecan Creek 161 kv (OKGE) SILSPRTONFLI NW Arkansas Siloam - Siloam Springs 161 kv ftlo Tonnece - Flint Creek 345 kv (CSWS- GRDA) OSGCANBUSDEA TX Panhandle (Amarillo) Osage Switch - Canyon East 115 kv ftlo Bushland - Deaf Smith 230 kv (SPS) FRASPECOLMEA Eastern SD / Nebraska Border Ft. Randall - Spencer 115 kv (NPPD- WAUE) ftlo Meadow Grove - Kelly 230 kv (NPPD) 19

20 Coordinating Congestion Management Seams Coordination 20

21 Congestion Management Events (CME) Transmission Loading Relief (TLR) Utilize market resource dispatch to control loading May or may not be accompanied by a TLR SPP is also utilizing auto-activation for identified constraints Reconfiguration Operating Guides Out-of-Merit Energy (OOME) Market-to-Market (M2M) 21

22 Congestion Management Events (CME) Transmission Loading Relief (TLR) Reconfiguration Operating Guides May be used in conjunction with CME when appropriate conditions exist: IDC curtailable transactions NNL impacts External impacts SPP also receives notifications when another RC issues a TLR that impacts transactions sinking in BAs under SPP RC purview Out-of-Merit Energy (OOME) Market-to-Market (M2M) 22

23 Congestion Management Events (CME) Transmission Loading Relief (TLR) Reconfiguration Operating Guides Out-of-Merit Energy (OOME) In certain instances, reconfiguration of the transmission system may result in decreased loading of constrained facilities These options are studied by operations planning and real-time engineers* * SPP staffs two 24x7 engineers for real-time operations support Market-to-Market (M2M) 23

24 Congestion Management Events (CME) Transmission Loading Relief (TLR) Reconfiguration Operating Guides Out-of-Merit Energy (OOME) Sometimes, local area problems warrant actions outside of the Interconnection-wide relief procedures SPP helps to facilitate appropriate communication, coordination, and actions needed between affected entities Market-to-Market (M2M) 24

25 Congestion Management Events (CME) Transmission Loading Relief (TLR) Reconfiguration Operating Guides Out-of-Merit Energy (OOME) Market-to-Market (M2M) Situations may arise where congestion is highly impacted by the output of non-dispatchable generation Operating instructions to maintain output at a certain level may be necessary 25

26 Congestion Management Events (CME) Transmission Loading Relief (TLR) Reconfiguration Operating Guides Out-of-Merit Energy (OOME) Market-to-Market (M2M) Only occurs between SPP and MISO Initiated by either SPP or MISO Achieve least cost re-dispatch needed to provide the required physical relief on a flowgate Limited to Reciprocal Coordinated Flowgates (RCF) 26

27 M2M 27

28 Priority Number One: RELIABILITY Safe Operating Mode (SOM) may be initiated if none of the above options result in satisfactory flow control or do not address other reliability concerns. 28

29 Thank You Connect with SPP: SouthwestPowerPool SPPorg southwest-power-pool 29