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How the Missouri River is Operated - WAPA’s Role - Mid-West Electric Consumer Association Annual Meeting December 11, 2018 | Denver, CO Lori L. Frisk VP, Power Marketing for the Upper Great Plains Region Western Area Power Administration
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How the River is Operated
National Weather Service US Army Corp of Engineers (COE) Bureau of Reclamation (BOR) Western Area Power Administration (WAPA) What WAPA Considers Flexibility within the Day
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Pick-Sloan Missouri Basin Program – - Eastern Division Where We Get the Power
Congressionally Authorized Project Purposes: Flood Control Navigation Irrigation M&I Water Supply Hydropower Recreation Fish & Wildlife (including endangered species)
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UGP Firm Power Customers
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UGP Summer Load
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UGP Winter Load
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BOR and COE Information to UGP Generation Operation Dispatch
Proposed plant and unit outages over 10 days in advance Weather forecasts Staffing at the plants WAPA reviews to accommodate load Reliability Coordinators approval before outage is confirmed 2 days in advance Outages by plant Hourly unit limitations based on scheduled outages 2–4 hrs. in advance of outage the plants call WAPA swaps load to different units at the same plant or open the spillway which required two people on staff at the plant
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BOR and COE Information to UGP Marketing
2 days in advance Hydro release schedule (MWhs) By plant Outages Hourly unit limitations
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UGP Marketing Considerations On the West
Generation release schedules Fort Peck (Units 1, 2 + 3) Canyon Ferry Yellowtail Unit outages Forecasted weather Miles City Tie availability Historical UGP loads Forecasted UGP loads West market prices and counterparty offers SPP market prices
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UGP Marketing Considerations in the Southwest Power Pool (SPP)
Forecasted weather Forecasted market prices Forecasted load profile
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UGP Marketing Locations in the Southwest Power Pool (SPP)
SPP SETTLEMENT LOCATIONS WAPA Generation WAUE_FTPECK.1_3 (East or West) WAUE_FTPECK.4_5 WAUE_GARRISON.1_3 – 230KV WAUE_GARRISON.4_5 – 115KV WAUE.OAHE.1 ) KV WAUE.OAHE.2_7 – 230KV WAUE.BIGBEND.1_8 WAUE.FTRANDALL.1_2 – 115KV WAUT.LRTRANDALL.3_8 – 230KV WAUE.GAVINSPT.1_3 WAUE.MILESCITY
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UGP Marketing Scheduling Generation
COE hydro release schedule by plant Spread the release schedule over all 24 hours of the day for each plant Profile it to match forecasted SPP load, SPP markets prices, our load, etc. Then spread the hourly amounts to the available units
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UGP Marketing Scheduling Generation
Example: Fort Peck
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UGP Marketing Generation Rough Zones
Ranges where the units are not scheduled
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Day-Ahead Schedule Flexibility On the West
Review COE unit limits for minimum and maximum operation levels (Rough Zone) Example: Fort Peck Units 1 and 3 (45 MW units) each need to be operated below 16 MWs or about 28 MWs Voltage concerns or equipment wear and tear Some MWs need to be left unscheduled so the Balancing Authority can move the units for regulation or voltage issues
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Day-Ahead Schedule Flexibility On the East in SPP
When we have excess generation we schedule higher generation amounts when SPP Market prices are higher to match SPPs load forecast
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Day-Ahead Schedule Flexibility On the East in SPP
When generation is average we schedule generation to match the UGP load
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Day-Ahead Schedule Flexibility On the East in SPP
If generation is significantly lower than our load forecast we shape the output to match the load profile in the peak hours when SPP market prices are higher
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Real-Time Marketing Flexibility On the West
UGP has staff that monitors the markets on a real- time basis 24 hours per day. They react to: Unscheduled outages Load coming in higher than forecasted Buyers for excess generation COE can call with water changes throughout the day Miles City Tie going out of service If there are buyers for our our excess generation If no buyers for our surplus then we need to back the generation down to match our load
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Real-Time Marketing Flexibility In SPP
UGP has staff that monitors the markets on a real- time basis 24 hours per day. They react to: Unscheduled outages COE can call with water changes throughout the day
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Generation Dispatch Flexibility
Monitor plant output for: Operational restrictions Environmental reasons Unit availability System outages Transmission service curtailments directed from the Reliability Coordinators (SPP and WECC) Fluctuate output on the West for regulation and reserves
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West Generation
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East Generation
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Thank you! Lori Frisk VP of Power Marketing for the Upper Great Plains Regions
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