Item 13- Presentation: Fourth Quarter Operations Report — original pdf

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Austin Energy Operations Update FY2026 Q4 Lisa Martin Deputy General Manager & Chief Operating Officer November 2026 © Austin Energy Item 13Agenda Quarterly Operations Update Executive Summary Environmental Performance Reliability Performance Base Battery Storage Agreement Update 2 Executive Summary Carbon-Free Generation 64% carbon-free energy generated in Q4. Generator Availability Resource commercial availability met summer targets. Carbon-Free as a Percentage of Load 56% carbon-free generation as a percentage of load in Q4. Reliability Performance Performance metrics show improvements in outage frequency and stability in outage duration on average across the system. 3 Environmental Performance Austin Energy Operations Update Carbon-Free Generation as a Percentage of Load Monthly Data 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 56% Carbon-Free Average Nuclear Renewable 5 Generation and Load Analysis – FY2026 Q4 Historical Q4 System Peak Demand (MW) Consumption and Generation (MWh) 3,064 3,110 3,097 2,928 W M 3,200 3,100 3,000 2,900 2,800 2,700 2,600 2,500 4,931,698 4,281,636 Natural Gas 1,153,907 Coal 378,904 Renewable 1,836,712 Nuclear 912,114 64% Carbon-free electricity generated 2023 2024 2025 2026 Consumption Generation Power Generation Cost by Fuel Type 6% 6% Power Supply as a Percent of Consumption 24% 64% Nuclear Coal Natural Gas Renewable Austin Energy Other 31% Renewable 37% Nuclear 19% ERCOT Market & Trades 13% 56% Carbon-free as a percentage of load 6 Reliability Performance Austin Energy Operations Update Generator Availability – FY 2026 Q4 Generation Resource Commercial Availability Actual Commercial Availability Target (Summer only) South Texas Project Fayette Power Project Sand Hill Combined Cycle Sand Hill Peakers Decker Peakers Nacogdoches 100% 98.2% 100% 95.2% 92.5% 100% 100% 98% 95% 95% 95% 98% 8 Electric Vehicle Charging Network – FY2026 Q4 100% 95% 90% 85% 80% 100% 95% 90% 85% 80% Overall Network Uptime 12-month rolling average 99% 99% 99% 98% Q1 FY26 Q2 FY26 Q3 FY26 Q4 FY26 DC Fast Chargers Uptime 12-month rolling average 90% Q1 FY 26 92% Q2 FY26 95% 94% Q3 FY26 Q4 FY26 9 Report Charging Station Outages • ChargePoint app • Austin 3-1-1 • pluginaustin@austinenergy.com Electric Vehicle Charging Stations Charging Sessions in Q4 Average Monthly: 30,356 30,470 31,109 29,488 35,000 30,000 25,000 20,000 15,000 10,000 5,000 0 July August September EV Charging Station Usage FY2026 Q4 687 Megawatt Hours average monthly energy dispensed 9 a.m. – 2 p.m. peak usage time 3h 29m average charging time 10 Distribution Reliability – Q4 FY2026 Average number of outages per customer Average outage duration in minutes Average minutes to restore service to affected customer 1.55 0.87 75.66 158.40 87.41 102.00 Austin Energy Austin Energy Q4 FY2026 Q4 FY2026 TX Average TX EIA Elec. Pwr. Annual Avg. CY2025* CY2025* Austin Energy Austin Energy Q4 FY2026 Q4 FY2026 TX Average TX EIA Elec. Pwr. Annual Avg. CY2025* CY2025* Austin Energy Q4 FY2026 TX EIA Elec. Pwr. Annual Avg. Austin Energy Q4 FY2026 TX Average CY2025* CY2025* Austin Energy trendline Austin Energy Trendline 1.2 1.0 0.8 0.6 0.4 120 100 80 60 40 Austin Energy Trendline Austin Energy Trendline 120 100 80 60 40 FY25 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY26 Q1 FY26 Q2 FY26 Q3 FY26 Q4 FY25 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY26 Q1 FY26 Q2 FY26 Q3 FY26 Q4 FY25 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY26 Q1 FY26 Q2 FY26 Q3 FY26 Q4 SAIFI – System Average Interruption Frequency Index SAIDI – System Average Interruption Duration Index CAIDI – Customer Average Interruption Duration Index Major event days are excluded from reliability metrics * TX EIA Electric Power Annual Average without major event days – CY2025 11 Base Power Agreement Base Power Agreement Adds to Austin Energy’s Distributed Battery Portfolio Key Aspects • • Sourced from Request for Proposal issued in 2025 Agreement approved by City Council April 23, 2026 • Wholesale battery storage agreement for up to 40 MW • • • • 10-year agreement – about $4 million per year Multi-location, distribution voltage connections versus a large single site, high-voltage transmission connection Provides wholesale cost risk management to the Austin Energy Load Zone Contributes to the 125 MW local battery storage goal in the Resource, Generation and Climate Protection Plan to 2035 13 Current Status • Portfolio will ramp up to 40MW over 18 months – installations began in summer 2026 • As of October 2026, there are approximately 185 customer installations for a total of 3.7 MW • Participating customers have a portion of the battery reserved for their use if an outage occurs • Austin Energy is paying for and has full use of the other portion of the battery • Detailed information for Base at basepowercompany.com/austinenergy 14 ©Austin Energy. 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