Winter Storm Event Recap and Recovery Efforts in New Braunfels
Throughout the winter storm event in New Braunfels, the city council and utility teams worked tirelessly to address water leaks, outages, and low water pressure issues. The Electric System documented outage statistics, and after extensive efforts, water pressure was restored system-wide. The community was kept informed through initiatives like a water outage viewer and a boil water notice. The city of New Braunfels and NBU collaborated to open water stations for public use, with successful outcomes and timely restoration efforts.
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Winter Weather Update City Council Meeting February 22, 2021
NBU Winter Storm Event INITIAL PRE-PLANNING EOC MEETING TABLETOPS WITH ENGINEERING, OPS, SYS CTRL Friday 2/12 Sunday 2/14 3:15 PM ERCOT ISSUED WATCH 1:30 pm Saturday 2/13 Monday 2/15 1:25 AM EOC ACTIVATED EEA LEVEL 3 INITIATED WITH ERCOT STAFF MOBILIZED Sunday 2/14 Monday 2/15 11:45 AM 1:25 AM NOTIFIED LCRA LOST TRANSMISSION LINE ERCOT LOAD SHED OBLIGATIONS BEGIN
NBU Winter Storm Event NBU TEAMS ASSISTED IN WATER LEAK DETECTION AND ISSUED CONTINUOUS Wednesday Wednesday 2/17 Tuesday 2/16 2/17 WATER OUTAGE VIEWER DEVELOPED FOR CUSTOMERS WEB FORM INITIATED FOR PUBLIC TO REPORT OUTAGES AND LOW PRESSURE CONSUMPTION REPORTS CONTROL CENTER LOST VISIBILITY TO WATER SCADA NETWORK RESTORED AT 5 AM Wednesday Wednesday 2/17 2/17 Thursday 2/18 BOIL WATER NOTICE ISSUED PHONE BANK INITIATED LEAK REPAIR FILL WATER SYSTEM Wednesday 2/17 Friday 2/19 ERCOT RESCINDS LOAD SHED REQUIREMENT CITY OF NB AND NBU OPEN WATER STATIONS
NBU Winter Storm Event EOC WRAP UP MEETING Saturday 2/20 Monday 2/22 WATER PRESSURE RESTORED SYSTEM WIDE AFTER ACTION MEETING TO FOLLOW Saturday 2/20 FLUSHED AND SAMPLED WATER SYSTEM Sunday 2/21 BOIL WATER NOTICE RESCINDED
Winter Storm Highlights 2/14-2/21 Electric System: NBU Electric System documented 0 outages prior to directive of rotating outages Max # of customers out of service at one time: 13,950 customers 10:00 2/16/21 Max load shed obligation: 86.97 MW Total Time Spent Rotating Outages: 70 Hours 35 Minutes Total Number of Load Shed Obligation Changes: 49 Total Number of Circuit Open-Close cycles: 620 Total Circuits Impacted: 34 of 42 total Outage summary (non-load shedding): 77 fuses, 21 transformer changes, and 3 downed wires, only 1 tree-related outage NBU s Electric System documented 0 outages after ceasing rotating outages 6
Winter Storm Highlights 2/14-2/21 Previous EEA Level 3 Event Occurred on February 2nd, 2011 Duration Rotating Outages: 7 Hours 24 minutes Max NBU Load Shed Obligation: 13.76MW Total Circuits Impacted: 9 Total Customers Impacted: 6,400 7
Winter Storm Highlights 2/14-2/21 Water System: 8 NBU water main breaks System operation severely disrupted by rotating outages Water demand peaked at 25.1 MGD (2.5X normal winter average) Would have been higher had we not de-watered portions of the system 5,000+ customer side leaks detected (Normally less than 300) De-watered many elevated storage tanks and water mains BWN issued Wednesday afternoon, rescinded Sunday afternoon 8
Financial Implications As a result of the weather event, NBU was financially impacted Cost of power (generation) estimated at $82M for the month of February Cost of power (generation + transmission) budgeted for the fiscal year $88.5M Impact will show up in Liquidity Financial Statements/Ratios Customer Rates Ratings 4
Liquidity Utilizing reserves to pay for power Reserves will not cover the full cost NBU requires additional liquidity until the cost can be recouped Smooth electric rates to customers by lengthening time to collect Provide one time water adjustment for weather event Options for liquidity being evaluated with Financial Advisor and Bond Counsel 4
Plan Ongoing discussions with PUC and other agencies, may provide some financial relief, but need to plan for what we know now Increase liquidity Additional liquidity will help us smooth electric rates to customers by lengthening time to collect Provide one time water adjustment for weather event 9
15 NBU Load
16 ERCOT Market Conditions New Peak Winter Load Record: ~69,000 MWs Record Breaking Pricing (ERCOT Price Cap $9,000) DAM (LZ_S) 124 Hours above $3000 47 Hours above $8000 RT (LZ_S) 109 Hours above $3000 94 Hours above $8000
17 ERCOT Load Shed ERCOT required utilities to shed load for 71 consecutive hours Across the ERCOT region more than 1 million MWhs of load was shed the value of this energy is ~9 Billion dollars Largest load shed requirement 19,000 MW between 6pm-12 am 2/15 NBU shed more than 4,000 MWhs NBU s largest period of load shed 85.49 MWhs NBU set a new peak load of 328 MW
18 NBU Position
19 Ancillary Services (A/S) Required by ERCOT and used to help maintain system integrity Little to no ability to hedge in advance Amounts required determined by percentage of load NSPIN REGDN REGUP RRS January Avg $1.83 $8.72 $11.14 $11.87 Feb 1-12 Avg $2.00 $4.93 $7.15 $15.35 Feb 13-19 Avg $5,978.38 $4,191.88 $10,863.60 $13,749.69 *All Figures are per MWh
20 Ancillary Services (A/S) During winter event, A/S costs exponentially increased 121 hourly intervals above $9,000 MW 84 Hourly intervals above $15,000 MW Max price for RRS was $25,674 MW Period January Feb 1-12 Feb 13-19 Total Ancillary Costs ~$156,592 ~$86,319 ~$40,407,516
21 NBU Cost Breakdown (2/1 2/19) Est. NBU Cost Breakdown Forward Hedges Intra-month DAM Javelina Long Draw Greasewood RT CRRs A/S Total Cost 1,089,120 $ 8,622,448 $ 42,663,973 $ (8,771,831) $ (6,924,320) $ (6,348,564) $ 7,596,118 $ (1,129,957) $ 40,493,835 $ 77,290,822 $
22 NBU vs. DAM vs. RT (Energy and CRRs only) DAM (Load Weighted) $/MWh 2,456 $ RT (Load Weighted) Total Cost 234,945,390 $ $/MWh 2,518 $ Total Cost 240,887,732 $ NBU $/MWh $ *As of 2/19/2021 Total Cost 36,796,987 $ 385
24 Regulatory Overview 2/15 PUC Open Meeting Ordered that Prices must be $9,000/MWh if firm load is being shed Suspension of LCAP in Scarcity Pricing 2/16 PUC Open Meeting Modified 2/15 order to not adjust the market prices to $9000/MWh retrospectively 2/17 PUC Open Meeting Rotate outages where customers are not off for more than 12 hours 2/19 PUC Open Meeting Designation of Electric Providers of Last Resort (POLR) Initiated investigation into the events that led to ERCOT market disruptions
Questions? 11
