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IRP Workshop

IRP Workshop. February 25, 2014. 2014 IRP. February 25 th IRP Schedule Review of IRP Order December 5 th Weather Event Wexpro II Master Planning of System. 2014 IRP Schedule. April 2 nd Gas Control Coordination Clean Air Heating Season Review Monticello Event. 2014 IRP Schedule.

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IRP Workshop

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  1. IRP Workshop February 25, 2014

  2. 2014 IRP • February 25th • IRP Schedule • Review of IRP Order • December 5th Weather Event • Wexpro II • Master Planning of System

  3. 2014 IRP Schedule • April 2nd • Gas Control Coordination • Clean Air • Heating Season Review • Monticello Event

  4. 2014 IRP Schedule • April 30th • Annual Demand & Peak Day Forecasting (Impact of Energy Efficiency) • Report on Lakeside • Review RFP • June 25th • Present IRP to Utah PSC

  5. Review of IRP Order • Wexpro Gas • Need for New Capacity • Impact of Energy Efficiency (EE) Programs on Peak Demand • Lost-and-Unaccounted for Gas (LAUF)

  6. Definition “The difference between the gas injected into a distribution system and the gas measured at customers’ meters.” Lost and Unaccounted for Gas Company Use – Compressors, etc. Loss due to tear-outs

  7. Possible Causes – NRRI Report June 2013 • Pipe Leaks • Measurement Error • Temperature and pressure difference • Heat value conversion • Meter inaccuracies • Accounting error • Company use • Third-party damage • Cycle Billing • Consumption on inactive meters • Stolen Gas • “Blowdown”

  8. Calculations – Most Recent IRP Table 3.5 (page 3-9) in most recent IRP Recorded at customer meters What we know or can estimate LAUF Total Recorded at City Gates

  9. Recent Results

  10. Measures to Decrease LAUF

  11. December 5, 2013 Evening Nominations (Cycle 2) Sent by 5:00 pm to the TSP by 5:15 pm Confirmations by 8:00 pm Scheduled by 9:00 pm Timely Nominations (Cycle 1) Sent by 10:30 am to the TSP by 10:45 am Scheduled at 3:30 pm Intraday 1 Nominations (Cycle 3) Sent by 9:00 am to the TSP by 9:15 am Confirmations by 1:00 pm Scheduled by 1:00 pm Intraday 2 Nominations (Cycle 4) Sent by 4:00 pm to the TSP by 4:15 pm Confirmations by 7:00 pm Scheduled by 8:00 pm 8:00 am GD2 Gas Flow 8:00 am GD2 Gas Flow 4:00 pm GD2 Gas Flow 8:00 pm GD2 Gas Flow Gas Day 2 Gas Day 1 - December 5, 2013 - December 4,2013 Reductions for (GD5) - 2,348 Dth 10:00 am Nominations in for Dec 5th (GD5) - 154,953 Dth 1:00 pm - Official cut notifications were sent out to transportation customer’s agents as part of the confirmation of the ID1 cycle 9:45 am QGC notified by QEP of cuts at Blacks Fork and Red Wash plants - QGC started working with scheduling to determine the extent of cuts for transportation customers Evening Noms for (GD5) - 139,945 Dth 7:00 pm - Questar Gas notified customers that they could resume usage to match their increased supply that was scheduled to arrive at 8pm. 12:00 pm - A list of customers that required reductions was sent to Questar Gas account representatives 8:30 am and 10:00 am LeRoy and Chalk Creek aquifers to withdrawal (Coalville was already on withdrawal) 7:30 am QGC Gas Supply purchases gas (ID1) to make up for assumed cuts at Blacks Fork 6:00 am – QGC Gas Supply notices reduced flow from Blacks Fork (Pipeviewer)

  12. Wexpro Gas Supply Prices

  13. Wexpro – IRP Order • What is the maximum manageable percentage of Wexpro production without excess gas? • What are the costs of excess Wexpro gas? • What percentage of Wexpro production causes significant increases in shut-ins? • How much Wexpro gas can feasibly be shut in?

  14. Wexpro II • Trail Unit II became a Wexpro II property as of February 1. • Wexpro and the Company are tracking and accounting for this property separately. • Coordinating to establish procedures to sell cost-of-service production • Potential properties may be available in this low-cost environment.

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