Centerpoint Energy, Inc (holding Co) · NYSE:CNP
Centerpoint Energy, Inc (holding Co) — Corporate Update (October 2025)
86 slides from Centerpoint Energy, Inc (holding Co)'s corporate update, Oct 23, 2025
Slide 1: CenterPoint Energy Indiana South Integrated Resource Plan
CenterPoint Energy Indiana South Integrated Resource Plan Public Stakeholder Meeting 4 October 23, 2025
Slide 2: Stakeholder Meeting Facilitator: 1898 & Co.
Stakeholder Meeting Facilitator: 1898 & Co. WHO: 1898 & Co. is the business, technology, and security consultancy part of Burns & McDonnell WHAT: The Resource Planning & Market Assessments group has been working on Integrated Resource Plans for over 20 years HOW: Our team will help facilitate stakeh
Slide 3: Agenda
Agenda Time Topic Speaker 9:00 Sign-in & Refreshments 9:30 Facilitators and Meeting Protocols & Participation Drew Burczyk, Project Manager, Resource Planning & Market Assessments, 1898 & Co. 9:40 Safety Share & Welcome Shane Bradford, Vice President, Indiana Electric, CenterPoint Energy 9:50 Follow
Slide 4: Meeting Protocols
Please focus questions, comments, and feedback to the IRP process and today’s agenda topics CenterPoint Energy Indiana (CEI) South does not authorize the use of cameras, video/audio recording devices, or AI transcription during the meeting Meeting Protocols Following the meeting, feedback (concepts,
Slide 5: Meeting Participation
Time is allotted for questions following each presentation – please hold questions until the designated question period For those in the room, please keep side conversations to a minimum. The ceiling mics are sensitive, and additional noise may make it hard for those online to hear In-person attende
Slide 6: Welcome and Safety Share
Welcome and Safety Share Shane Bradford Vice President, Indiana Electric 10/23/2025 6
Slide 7: Safety Share - Halloween
Safety Share - Halloween Drivers should be aware that around Halloween, there will likely be more pedestrians on the roads and in unexpected places. Safety Tips for Drivers ● #1: Be alert for trick-or-treaters and other pedestrians. ● #2: Slow down and scan the road. Remember: Slower speeds save liv
Slide 8: Stakeholder Feedback & IRP Process Recap
Stakeholder Feedback & IRP Process Recap Leslie Hamby Manager IRP & Generation Analysis 10/23/2025 8
Slide 9: Summary of Stakeholder Feedback From Meeting #3
Summary of Stakeholder Feedback From Meeting #3 Topic Stakeholder Comments CEI South Updates/Responses Scenario Portfolios – Explain why manual Modeling: modifications applied to scenario portfolios to align with the Reference Case load 1898 & Co. posted documentation to the IRP File Scenario Portfo
Slide 10: Summary of Stakeholder Feedback From Meeting #3
Summary of Stakeholder Feedback From Meeting #3 Topic Stakeholder Comments CEI South Updates/Responses Request for energy burden calculation CEI South will make the energy burden Affordability workpaper available to technical stakeholders Measure with a signed NDA. Request to provide guidance on bil
Slide 11: 2025 Stakeholder Process
2025 Stakeholder Process Proposed 2025 CEI South Stakeholder and Tech to Tech Meetings – Dates and agendas are subject to change Meeting 1 Tech to Tech Meeting 2 Meeting 3 Tech to Tech Meeting 4 March 19 April 28 May 14 September 11 October 15 October 23 IRP Process, Objectives, & Follow Up Info
Slide 12: Target Data Release Schedule
Target Data Release Schedule Updated Base Probabilistic Draft Load Draft Base Case Case + Forecast Model + Sensitivity Scenario Models Analysis Models 3/20/2025 5/5/2025 8/20/2025 10/15/2025 Released data and Tech to Tech meeting attendance will be available to the technical stakeholders with a co
Slide 13: Final Objectives & Metrics
Final Objectives & Metrics Objective Measure Metrics 20-year Net Present Value Revenue Requirement (“NPVRR”) $ Affordability: 95th percentile of NPVRR (million$) across 200 dispatch $ Consider portfolios’ impact on the retail electric utility service iterations under varying market condition
Slide 14: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 15: Preferred Portfolio
Preferred Portfolio Matt Rice Director, Regulatory and Rates 10/23/2025 15
Slide 16: How did we get here?
How did we get here? CEI South has navigated considerable uncertainty during our generation transition. While the projected mix of resources has evolved, CEI South has remained focused on providing reliable, affordable, sustainable, stable, and resilient power for its customers. • 130 MWs of solar c
Slide 17: Key Risk Considerations
Key Risk Considerations CHANGE RISK MISO Direct Loss Major changes to capacity accreditation construct lowers the Could over or under build resources needed to reliably of Load (“DLOL”) amount of installed capacity that counts towards reliability and affordably serve customers EPA Greenhouse Propose
Slide 18: Generation Timeline
Generation Timeline1 1 Beyond 2028, CNP will reassess generation resource selections in the next IRP 10/23/2025 IRP = Integrated Resource Plan BTA = Build Transfer Agreement PPA = Power Purchase Agreement 18
Slide 19: The Preferred Portfolio provides near term rate stability, while preserving flexibility
The Preferred Portfolio1 provides near term rate stability, while preserving flexibility to adapt to uncertainty ● Based on factors outside of CEI South’s control (MISO accreditation, renewable cost increases, and repeal of tax incentives) conversion of F.B. Culley 3 with renewables/storage is no lo
Slide 20: Alternate Generation Timeline
Alternate Generation Timeline 10/23/2025 IRP = Integrated Resource Plan BTA = Build Transfer Agreement PPA = Power Purchase Agreement 20
Slide 21: The Alternate Preferred Portfolio provides necessary flexibility to quickly pivot
The Alternate Preferred Portfolio provides necessary flexibility to quickly pivot, keeping Southern Indiana competitive for economic development and growth ● Preserves maximum future flexibility, keeping Southern Indiana competitive for economic development and growth ● Speed to market is important
Slide 22: Short Term Action Plan (Next Three Years)
Short Term Action Plan (Next Three Years) Continue to implement generation transition • Galesburg Wind: 147 MW – PPA (Approved by IURC) • Salt Creek Wind: 170 MW – PPA (Pending IURC approval) • Wheatland Solar: 150 MW – PPA (Approved by IURC) Conduct an RFP for storage at F.B. Culley 2 and begin neg
Slide 23: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 24: On break – we will return at 10:26 CDT
CenterPoint Energy Indiana South Integrated Resource Plan Public Stakeholder Meeting 4 On break – we will return at 10:26 CDT 10/23/2025 24
Slide 25: Risk Analysis Modeling and Portfolios
Risk Analysis Modeling and Portfolios Drew Burczyk Project Manager, Resource Planning & Market Assessments, 1898 & Co. 10/23/2025 25
Slide 26: Scenario-Driven Portfolios Updated Approach
Scenario-Driven Portfolios Updated Approach Allow the model to construct an optimized portfolio for each scenario, then lock in those model outputs and run through reference case assumptions Key Drivers: Policy Factors Load Commodity Prices Capital Costs Natural Gas Scenario Environmental Polic
Slide 27: Scenario-Driven Portfolios Updated Approach
Scenario-Driven Portfolios Updated Approach Optimized Reference Case Optimized Low Reg Optimized High Reg Optimized Alt High Reg Year (Portfolio 1) (Portfolio 8) (Portfolio 9) (Portfolio 10) 2028 1 FBC2 Do Nothing +1 FBC2 Storage (90 MW) 1 FBC2 Do Nothing 1 FBC2 Do Nothing 1 ABB5/6 Continue +1 AB Br
Slide 28: Updates to F.B. Culley 2 Selections
Updates to F.B. Culley 2 Selections ● As we continued to build out the Year F.B. Culley 2 F.B. Culley 2 No F.B. Culley 2 Aeroderivative Interconnect Re-Use Reciprocating Engines F.B. Culley 2 Storage model and refine inputs, we re-ran 2028 +1 FBC2 Aero (86 MW) 1 FBC2 Do Nothing +1FBC2 Recip Engines
Slide 29: Updated EE/DR Model Selections
Updated EE/DR Model Selections Program Name Fixed vs Selectable Selection Frequency Selection Percent DR Industrial* Fixed 19/19 100% DR_CI Battery Selectable 0/19 0% DR_CI BYOT Selectable 19/19 100% DR_CI EV Selectable 0/19 0% ● The EE/DR programs selected DR_CI TOU CPP Selectable 18/19 94% DR_CI W
Slide 30: Final Portfolios
Final Portfolios (NPV values are the average from 200 stochastic runs) Portfolio5_FBC3 to Portfolio7_FBC3 Gas Year Portfolio1_Reference Portfolio2_FBC3 NG Portfolio3_FBC3 on Portfolio4_FBC3 on Simple Cycle Gas Portfolio6_Renewable Conversion with Portfolio8_Low Reg Portfolio9_High Reg Portfolio10_Al
Slide 31: Final Portfolios – Demand Side Selections
Final Portfolios – Demand Side Selections Portfolio1_ Portfolio2_FBC3 Portfolio3_FBC3 Portfolio5_FBC3 Portfolio6_ Portfolio7_FBC3 Portfolio10_Alt Portfolio11_ Portfolio12_ Reference Case NG Flexibility on on Coal without Portfolio4_FBC3 to Simple Cycle Renewable Gas Conversion Portfolio8_Low Portfol
Slide 32: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 33: Portfolio Characteristics & Considerations
Portfolio Characteristics & Considerations Matt Rice Director, Regulatory and Rates 10/23/2025 33
Slide 34: 1- Reference Case
1- Reference Case Model Selections F.B. Culley 2 Do Nothing 1x 100 MW Storage A.B. Brown Start CCGT 01/01/2030 2x 50 MW Storage Benefits F.B. Culley 3 Retire 12/31/2031 • More affordable long term. Among lowest cost and cost risk • Relatively environmentally friendly (highly efficient Balance of Loa
Slide 35: 2 - FBC3 on NG 2035
2 – FBC3 on NG 2035 Model Selections F.B. Culley 2 Do Nothing Benefits A.B. Brown Start CCGT 01/01/2030 F.B. Culley 3 Start NG 01/01/2035 • More affordable long term. Among lowest cost and cost risk • Maintains jobs and tax base in Warrick County Balance of Load and Resources Installed Capacity (MW)
Slide 36: 3 - FBC3 on Coal without ABB7
3 – FBC3 on Coal without ABB7 Model Selections 3x 100 MW Storage F.B. Culley 2 Do Nothing 1x 50 MW Storage A.B. Brown 5/6 Continue 2x Non IRA Solar PV Benefits F.B. Culley 3 Continue on Coal 1x Non IRA Wind • Provides rate stability - avoids near-term large capital investment before 2032 Balance of
Slide 37: 4 - FBC3 on Coal to SMR
4 – FBC3 on Coal to SMR Model Selections F.B. Culley 2 Do Nothing 1x 100 MW Nuclear - SMR A.B. Brown Start CCGT 01/01/2030 1x 100 MW Storage Benefits F.B. Culley 3 Retire 12/31/2034 • Meets state and federal desire for nuclear energy • Adds some jobs and tax base in Posey County. Maintain Balance of
Slide 38: 5 - FBC3 to Simple Cycle Gas Turbine
5 – FBC3 to Simple Cycle Model Selections 1x 100 MW Storage Gas Turbine F.B. Culley 2 Do Nothing A.B. Brown 5/6 Continue 1x J Class SCGT 1x Non IRA Wind + Storage F.B. Culley 3 Retire 12/31/2034 1x Non IRA Wind Benefits • Less reliant on energy purchases and sales from the market Balance of Load and
Slide 39: 6 - Renewable Heavy Portfolio
6 – Renewable Heavy Portfolio Model Selections F.B. Culley 2 Do Nothing 5x 100 MW Storage A.B. Brown 5/6 Continue Benefits F.B. Culley 3 Retire 12/31/2031 1x Non IRA Wind 1x Non IRA Wind + Storage • Limited/minimum near-term capital investment until 2032 with low near-term energy burden due to tax i
Slide 40: 7 - FBC3 NG with Renewables
Model Selections 7 – FBC3 NG with Renewables F.B. Culley 2 Do Nothing 3x 100 MW Storage A.B. Brown 5/6 Continue 2x 50 MW Storage Benefits F.B. Culley 3 Start NG 01/01/2030 3x Non IRA Wind • Diverse generation portfolio • Environmentally friendly (CO2 emissions) Balance of Load and Resources Installe
Slide 41: 8 - Low Reg Approach
8 – Low Reg Approach Model Selections F.B. Culley 2 Storage 2x 50 MW Storage A.B. Brown Start CCGT 01/01/2030 1x Non IRA Solar + Storage Benefits F.B. Culley 3 Retire 12/31/2031 • Long-term affordability. Among lowest cost and cost risk • Relatively environmentally friendly (highly efficient Balance
Slide 42: 9 - High Reg Approach
9 – High Reg Approach Model Selections F.B. Culley 2 Do Nothing 4x Non IRA Wind + Storage A.B. Brown 5/6 Continue Benefits F.B. Culley 3 Retire 12/31/2031 • Environmentally friendly (low CO2 emissions) • Less reliant on energy and capacity sales Balance of Load and Resources Installed Capacity (MW)
Slide 43: 10 - Alt High Reg Approach
Model Selections 10 – Alt High Reg Approach F.B. Culley 2 Do Nothing A.B. Brown Start CCGT 01/01/2034 1x Non IRA Wind 1x Non IRA Solar Benefits F.B. Culley 3 Retire 12/31/2031 2x Non IRA Wind + Storage • Flexible. Allows time to adapt to regulatory & market conditions Balance of Load and Resources I
Slide 44: 11 - FBC3 Co-Fire 2030
11 – FBC3 Co-Fire 2030 Model Selections F.B. Culley 2 Do Nothing 4x 50 MW Storage Benefits A.B. Brown Start CCGT 01/01/2030 • Relatively low-cost portfolio in the long run F.B. Culley 3 Start Co-Fire 01/01/2030 & Retire 12/31/2038 • Relatively low long-term cost risk • Allows for economic developmen
Slide 45: 12 - Delayed Reference
12- Delayed Reference1 Model Selections F.B. Culley 2 Storage 2x 50 MW Storage Benefits A.B. Brown Start CCGT 01/01/2034 F.B. Culley 3 Retire 12/31/2034 • Allows time to reassess in next IRP and adapt to regulatory & market conditions • EPA policies – Greenhouse Gas Balance of Load and Resources Ins
Slide 46: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 47: Lunch – we will return at 12:15 CDT
CenterPoint Energy Indiana South Integrated Resource Plan Public Stakeholder Meeting 4 Lunch – we will return at 12:15 CDT 10/23/2025 47
Slide 48: Risk Analysis Scorecard
Risk Analysis Scorecard Drew Burczyk Project Manager, Resource Planning & Market Assessments, 1898 & Co. 10/23/2025 48
Slide 49: Final Scorecard
Final Scorecard Affordability Environmental Sustainability Reliability/Resiliency/Stability Risk/Other Incremental Transmission Energy Burden CO2 Reliability Analysis (%) Equivalent Energy Capacity 20 Year Delta From 5% Value of 95% Value of CO2 Intensity Emissions SOx NOx Unserved Spinning Fast Sta
Slide 50: Affordability
Affordability Net Present Value of Revenue Requirements (NPVRR) Net Present Value of Revenue Requirements (2026$MM) $6,000 ● Portfolios including the A.B. Brown conversion to a A B C CCGT generally have a lower average portfolio NPV $5,500 $5,000 ● The distribution of NPVRR outcomes (5th and 95th pe
Slide 51: Affordability: Revenue Requirements Components
Affordability Revenue Requirements Components ● Timing and magnitude of capital investment vary across portfolios and contribute to the NPVRR ranking of NPVRR by Component ($MM) portfolios. $6,000 ● Operating revenues, associated largely with market $5,000 $4,309 $4,375 energy sales, lower the NPVRR
Slide 52: Affordability: Annual Revenue Requirements by Portfolio
Affordability Annual Revenue Requirements by Portfolio Annual Revenue Requirement by Portfolio ($000) ● Revenue Requirements are the sum of $700,000 the total operating and capital costs $600,000 minus operating revenues $500,000 $400,000 ● Dips in 2032 and 2033 are indicative of investment tax cred
Slide 53: Affordability: Incremental Electric Energy Burden
Affordability Incremental Electric Energy Burden ● Electric energy burden measures the affordability of increases in energy prices when compared to median household income of Vanderburgh County Incremental Electric Energy Burden Approach Expected annual Expected annual energy bill for a energy bill
Slide 54: Affordability: Incremental Electric Energy Burden
Affordability Incremental Electric Energy Burden • Portfolios that convert A.B. Brown 7 to a CCGT Incremental Electric Energy Burden (%) frequently have the lowest average increase in electric 0.70% energy burden over both 5- and 10-year periods 0.62% 0.60% • Postponing the capital expenditure for A
Slide 55: Sustainability: CO2e Emission Intensity
Sustainability CO2e Emission Intensity CO2e Intensity 0.600 • CO2 intensity is a measure of the emissions produced by a portfolio divided 0.500 by the MWh of the energy produced 0.400 Tons CO2e / MWh • Every portfolio shows a decline in CO2e intensity over time 0.300 • The shutdown or conversion of
Slide 56: Sustainability: CO2 Total Emissions
Sustainability CO2 Total Emissions Annual CO2 Emissions • Total CO2 emissions over the study 3.5 period follow a similar trend to CO2 3.0 intensity by portfolio 2.5 Million Tons of CO2 • Most portfolios experience a decline in 2.0 annual emissions over the study period 1.5 1.0 • This decline is larg
Slide 57: Reliability & Resiliency
Reliability & Resiliency Fast Start , Spinning Reserves, Unserved Energy ● Fast Start resources (such as CTs, Batteries) are units that can reach full output within a few minutes. They give the grid operational flexibility by quickly ramping up when there’s an unexpected drop in generation or an inc
Slide 58: Risk/Other: Energy Purchases/Sales
Risk/Other Energy Purchases/Sales ● In the production cost model, the purchasing or selling of energy with the MISO market lowers portfolio costs for the benefit of customers ● In the risk analysis, the allowable amount of energy sales varied across the 200 draws to highlight the Portfolio 6 Generat
Slide 59: Risk/Other: Energy Purchases/Sales
Risk/Other Energy Purchases/Sales Energy Market Sales (%) Energy Market Purchases (%) Portfolio Description Short Term Long Term Short Term Long Term Average Average Max Max Max Max 2-FBC3 NG 2035 26% 32% 31% 9% 16% 9% 26% 32% 30% 10% 17% 11% ● The Preferred Portfolio has moderate energy 1-Reference
Slide 60: Risk/Other: Capacity Purchases/Sales
Risk/Other Capacity Purchases/Sales • The model is designed to allow CEI South to sell surplus system capacity during any season Impact of Capacity Sales on Average Portfolio NPVRR 7% Portion of NPVRR due to Capacity Sales (%) • Portfolios containing greater surplus capacity 6% experience increased
Slide 61: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 62: Alternate Reference Case
Alternate Reference Case Drew Burczyk Project Manager, Resource Planning & Market Assessments, 1898 & Co. 10/23/2025 62
Slide 63: Alternate Reference Case
Alternate Reference Case ● The alternate reference case includes all the assumptions of the reference case but contains a different load forecast ● Carries the same portfolio development process but did not perform stochastic risk analysis ● Allows for additional resource buildout and extra capacity
Slide 64: Alternate Reference Case Results
Alternate Reference Case Results Year 4: FB Culley 3 NG Conversion 5: FB Culley 3 NG Conversion 1: Optimization Run 2: 1x1 J Class in 2032 3: Renewables + CT’s 2030 2035 In all portfolios, the 2028 +1 FBC2 Storage (90 MW) +1 FBC2 Storage (90 MW) +1 FBC2 Storage (90 MW) +1 FBC2 Storage (90 MW) +1 FBC
Slide 65: Optimized Alternate Reference Case – Alternate Preferred Portfolio
1 – Optimized Alternate Reference Model Selections F.B. Culley 2 Storage 1x 2x1 J Class Fired 1x J Class SCGT Case – Alternate Preferred Portfolio A.B. Brown Start CCGT 01/01/2030 F.B. Culley 3 Continue on Coal 1x 50 MW Storage 1x 100 MW Storage 1x Non IRA Wind + Storage Balance of Load and Resource
Slide 66: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 67: Sensitivity Results
Sensitivity Results Drew Burczyk Project Manager, Resource Planning & Market Assessments, 1898 & Co. 10/23/2025 67
Slide 68: Sensitivity Modeling Summary
Sensitivity Modeling Summary ● Sensitivities are used to change only one variable at a time to understand the impact of a single risk factor Sensitivity Description Results Adjusts the adoption rate of rooftop solar Distributed Solar (results in lower load forecast) to examine The incentive delays t
Slide 69: Distributed Generation (DG) Solar
Distributed Generation (DG) Solar ● DG Solar sensitivity is modeled to reduce system load by 137 MW by 2045 through a$500/kW incentive beginning in 2026 ● The reference case model is re-optimized with a lower load forecast and an added cost of $34.6M Representative Day of DG Solar Load (6/1/2040) 8
Slide 70: Distributed Generation (DG) Solar
Distributed Generation (DG) Solar Year Portfolio1_Reference Case Distributed Solar Optimization 2028 1 FBC2 Do Nothing 1 FBC2 Do Nothing ● Despite lower load, the model selects 2029 nearly identical portfolios +1 AB Brown7: Fired CCGT 2030 +1 AB Brown7: Fired CCGT 2030 2030 (850 MW) (850 MW) -1 FB C
Slide 71: Large Load Addition
Large Load Addition ● Analysis of 3 load sizes (100 MW, 300 MW, 1000 MW) representative of any new large load user in CEI South territory ● New growth, expansion and retention of current customers ● Not limited to data center customers 2,500 2,300 2,100 Peak Demand (MW) 1,900 1,000 MW Sensitivity 1,
Slide 72: Large Load Sensitivity
Large Load Sensitivity Year Reference Case Portfolio 100 MW Sensitivity 300 MW Sensitivity 1,000 MW Sensitivity 2028 1 FBC2 Do Nothing 1 FBC2 Do Nothing 1 FBC2 Do Nothing +1 FBC2 Storage (90 MW) 2029 +3 100 MW Solar PV (300 MW) +4 100 MW 4 Hour Storage (400 MW) +1 AB Brown7: Fired CCGT 2030 (850 +1
Slide 73: AB Brown 7 Capital Costs
AB Brown 7 Capital Costs Impact of Increasing AB Brown Conversion Costs on Portfolio NPV 7.0% ● The capital costs of converting A.B. 6.62% Brown 5 and 6 to a 2x1 Combined 6.0% Cycle Gas Turbine are varied stochastically in the risk analysis 5.0% 4.43% 4.43% 4.0% ● An additional sensitivity was perfo
Slide 74: A.B. Brown 7 Capital Costs
A.B. Brown 7 Capital Costs Delta to Min NPV Delta to Min NPV Delta to Min NPV Delta to Min NPV (with ABB7 10% (with ABB7 20% (with ABB7 30% (200 draws) ● The portfolios with a 2030 adder) adder) adder) Portfolios with ABB SCGT to CCGT Conversion in 2030 conversion of ABB7 all move in 1-Reference Cas
Slide 75: F.B. Culley 2 Sensitivity: Portfolio 12
F.B. Culley 2 Sensitivity: Portfolio 12 Portfolio12: Delayed Reference Case Portfolio12: Delayed Reference Case Year FBC2 Interconnect Expire FBC2 Storage 2028 1 FBC2 Do Nothing +1 FBC2 Storage (90 MW) +1 AB Brown7: Fired CCGT 2034 (850 +1 AB Brown7: Fired CCGT 2034 (850 2034 MW) MW) ● A sensitivity
Slide 76: F.B. Culley 2 Sensitivity: Portfolio 12
F.B. Culley 2 Sensitivity: Portfolio 12 ● The Preferred Portfolio leverages the interconnection re-use at F.B. Culley 2 to add a 90 MW storage facility reducing near-term Portfolio 12 Balance of Load and Resources capacity needs in 2028 and 2029 Capacity Surplus/(Deficit) -104 -122 208 -48 -45 -67 -
Slide 77: Q&A
-@ e CenterPoint. - Fnergy Q&A
Slide 78: Summary
Summary Matt Rice Director, Regulatory and Rates 10/23/2025 78
Slide 79: Summary
Summary ● The Preferred Portfolio: ● Provides rate stability in the near and long-term ● Preserves maximum future flexibility to navigate unprecedented uncertainty ● Provides reliable, resilient, stable, affordable, and environmentally sustainable power ● The future of F.B. Culley 3 will be evaluate
Slide 80: Stakeholder Questions and Feedback
Stakeholder Questions and Feedback Moderated by Drew Burczyk Project Manager, Resource Planning & Market Assessments, 1898 & Co. 10/23/2025 80
Slide 81: Q&A
In-person attendees – please raise your hand to be recognized Virtual attendees will be in listen-only mode – to participate: Q&A • Use the “Raise” hand feature in Teams to be recognized, and your mic will be activated during the allotted time for questions, or • Enter questions into the “Q&A” featu
Slide 82: Appendix
-@ e CenterPoint. - Fnergy Appendix 10/23/2025 82
Slide 83: General IRP Model Updates
General IRP Model Updates ● Increased new resource availability ● Corrected resource CapEx curves (base, high, low across scenarios) ● No longer scaling Scenario-driven portfolios and stochastic purchases/sales limits ● Allowing for excess capacity purchases and sales to take place ● Stochastically
Slide 84: Updated Resource Availability Reference Case and Scenarios
Updated Resource Availability Reference Case and Scenarios 1st Year Previous Annual Previous Cumulative Annual Addition Limit Cumulative Addition Technology Available Limit Addition Limit (per Year) Limit (Entire Study Period) Thermal F Class CT 2030 1 Project, 246 MW 1 Project, 246 MW 1 Project,
Slide 85: Stability/Transmission Analysis
Stability/Transmission Analysis Short Circuit Ratio and Dynamic VAR Support ● Short circuit ratio (SCR) study: o Evaluate SCR at each bus per scenario o SCR is defined as the ratio of the apparent power at a point in the system following a fault to a defined benchmark value (100 MW) ● Dynamic VAR su
Slide 86: Stability/Transmission Analysis
Stability/Transmission Analysis Short Circuit Ratio and Dynamic VAR Support ● Scenario with AB Brown conversion and F.B. Culley 3 on the system is the strongest case in both categories ● All scenarios had similar short circuit ratios (±0.03%) ● Best dynamic VAR support is 148 MVAR greater than the w