Duke Energy Corporation (holding Company) · NYSE:DUK
Duke Energy Corporation (holding Company) — Corporate Update (April 2026)
56 slides from Duke Energy Corporation (holding Company)'s corporate update, Apr 29, 2026
Slide 1: 2026 Carolinas Resource Plan Meeting 1
2026 Carolinas Resource Plan Meeting 1 April 29, 2026 2026 Carolinas Resource Plan | 1
Slide 2: Meeting recording notice
Please note, this meeting is being recorded. Presentations will be posted on the IRP website and discussion portions will be temporarily stored for internal purposes only to ensure accuracy of meeting notes. 2026 Carolinas Resource Plan | 2
Slide 3: Safety
Safety Indoor safety Electricity powers our lives. It provides comfort, convenience and security. It is such an integral part of our daily lives that it is easy to overlook its hidden dangers. The following tips can help you to avoid accidents and spot potential problems Electrical plugs and cords ▪
Slide 4: Welcome
Welcome Jack Jirak VP, State Regulatory Legal Support 2026 Carolinas Resource Plan | 4
Slide 5: Facilitator of 2026 Engagement: Great Plains Institute (GPI)
Facilitator of 2026 Engagement: Great Plains Institute (GPI) Benjamin Stafford Alissa Bemis Trevor Drake Senior Policy Meeting & Vice President, Manager Administrative Manager Energy Systems Aileen Cole Audrey Negro Hallie Turner Senior Policy Meeting & Policy Associate Research Specialist Administr
Slide 6: Agenda
Agenda 9:00 – 9:05 a.m. Open & Safety Moment Benjamin Stafford, GPI 9:05 – 9:10 a.m. Welcome Remarks Jack Jirak 9:10 – 9:15 a.m. Agenda & Meeting Structure Benjamin Stafford, GPI 9:15 – 9:25 a.m. Introductions & Engagement Timeline Dylan Lustig 9:25 – 9:50 a.m. Introduction to IRP & Planning Process
Slide 7: Meeting Structure
Meeting Structure 2026 Carolinas Resource Plan | 7
Slide 8: Meeting Ground Rules
Meeting Ground Rules Respect each other: Focus on today’s topics: Help us to collectively uphold respect for each Please respect the scope of today’s meeting to make the other's experiences and opinions, even in most of our time. Pending legal issues are outside the difficult conversations. We need
Slide 9: Attendee Roles: Observers
Attendee Roles: Observers ▪ Please use the "Q&A" feature on the menu at the bottom of your screen to submit questions to presenters and technical representatives. ▪ We will address questions as time permits. ▪ Questions submitted through the Q&A feature will be displayed as they are answered. This a
Slide 10: Attendee Roles: Technical Representative
Attendee Roles: Technical Representative ▪ Technical representatives ▪ To manage participation, please use the “Raise hand” feature have registered in to indicate you would like to join the conversations (observers advance. do not use the “Raise hand" feature). ▪ Technical representatives Click on “
Slide 11: Additional Participation
Additional Participation Meeting materials and presentation recordings* will be uploaded to the website: duke-energy.com/CarolinasResourcePlan_2026 Questions/comments can be submitted through the "Contact Us" form on the website or send an email to DukeCarolinas@gpisd.net ▪ *Q&A portions of meetings
Slide 12: Introductions & Engagement Timeline
Introductions & Engagement Timeline 2026 Carolinas Resource Plan | 12
Slide 13: Duke Energy IRP Teammates & Today's Presenters
Duke Energy IRP Teammates & Today’s Presenters Matt Kalemba Heather Shirley Smith BJ Byers Karen Hall Emma Goodnow VP Integrated VP Regulatory Manager Director IRP Regulatory & Director Resource Planning Affairs & Policy IRP Modeling & Analytics Policy Strategy IRP Strategic Integration Glen Snider
Slide 14: Meeting 1 Technical Representatives
Meeting 1 Technical Representatives Technical Representatives: ▪ Colin Fitzhenry – Carolina Industrial Group for Fair Utility Rates ▪ Findlay Salter – South Carolina Office of Regulatory Staff ▪ Hamilton Davis – energyRe ▪ Jeffrey Gordon – South Carolina Office of Regulatory Staff ▪ Ralph Renne – Ne
Slide 15: Proposed Meeting Topics
Proposed Meeting Topics April May June MEETING 1 | April 29 MEETING 2 | May 14 MEETING 3 | Early June Advancing Duke Energy’s Resource Demand-Side & Analytical Framework & Plan for the Carolinas Supply-Side Modeling Assumptions Follow-Up Items ▪ Introduction to IRP, planning objectives, ▪ Discussion
Slide 16: Introduction to IRP and Planning Process
Introduction to IRP and Planning Process 2026 Carolinas Resource Plan | 16
Slide 17: Resource Planning for a Dual-State System
Resource Planning for a Dual-State System Carolinas Service Territory ▪ Duke Energy owns nearly 37 GW of power generating capacity serving nearly 4.8 million retail customers (including 871,000 customers in South Carolina) across 52,000 square miles in North and South Carolina ▪ Resource planning co
Slide 18: Carolinas Resource Planning Cycle
Carolinas Resource Planning Cycle Carolinas Resource Plan is a dual-state plan filed every 3 years in South Carolina, with updates in the off-cycle years, and filed every 2 years in North Carolina. The filing dates and length of the regulatory process in each state do not often align. SC NC 2023 202
Slide 19: Fundamentals of Resource Planning in the Carolinas
Fundamentals of Resource Planning in the Carolinas Planning to Serve Increasing Energy Needs Demand Patterns Vary Seasonally Customer Demand Growth Resource Retirements Planning Reserve Margin Resource Need Illustrative only 2026 Carolinas Resource Plan | 19
Slide 20: Orderly Transition as Coal-Fired Generation Plants Retire
Orderly Transition as Coal-Fired Generation Plants Retire Note: This visual is based on 2023 Carolinas Resource Plan and has not been updated with 2025 inputs. 2026 Carolinas Resource Plan | 20
Slide 21: Developing a Resource Portfolio: Analytical Process
Developing a Resource Portfolio: Analytical Process Develop Spring Long-Term Reliability 2025 Model Inputs Planning Models Verification Strategic Energy & Risk Valuation Model Forecasts & Assumptions (SERVM) Load Forecast Evaluate portfolio reliability over 43 EE/DSM Forecasts weather years, includi
Slide 22: Foundation Building to Our Plan
Foundation Building to Our Plan Reliability- Execution- Optimized for Increasingly clean focused informed balanced cost and diverse Plan resource mix The modeling and analytics supporting the Carolinas Resource Modeling Plan must be DART: Influencing Extreme Supply factors: Inflation weather Policy
Slide 23: Execution-Informed Planning
Execution-Informed Planning Storage Solar Natural Gas EE/DSM Transmission 2026 Carolinas Resource Plan | 23
Slide 24: Execution Updates & Concurrent Engagement
Execution Updates & Concurrent Engagement 2026 Carolinas Resource Plan | 24
Slide 25: Executing on our Resource Plan
Executing on our Resource Plan 2023 Carolinas Resource Plan Executing Near-Term Actions The PSCSC accepted Duke Energy’s comprehensive 2023 Duke Energy continues to execute on the IRP in the fall of 2024 via Order No. 2024-767 as “…the near-term actions identified in the 2023 IRP. most reasonable an
Slide 26: Advancing Previous Resource Plans
Advancing Previous Resource Plans Since the Public Service Commission of South Progress is also being made to comply with recent ProgressCarolina (“PSCSC”) since the and NorthResource last Carolinas Carolina Utilities Plan Orders orders from the PSCSC and NCUC (as well as Commission (“NCUC”) issued
Slide 27: Additional Engagement Opportunities
Additional Engagement Energy Efficiency/Demand-Side Opportunities Management Collaborative Electric Transportation Collaborative Stakeholder engagement is foundational Carolinas Transmission Planning to Duke Energy’s business, and the Collaborative topics covered within the Carolinas Resource Plan r
Slide 28: Energy Landscape Considerations
Energy Landscape Considerations 2026 Carolinas Resource Plan | 28
Slide 29: Public Policy Update
Public Policy Update State Legislation Federal Energy Renewed priority on reliability, Tax Credits serving economic development, and keeping costs low for customers Changes to federal energy tax (e.g., SC Act 41, NC SB 266) credits impacting resources like solar, wind, and energy storage EPA Regulat
Slide 30: The South Carolina Energy Security Act of 2025
The South Carolina Energy Security Act of 2025 Encouragement to evaluate new infrastructure and Increased economic development and generation, including natural gas generation, retention, and other customer options renewables, storage and nuclear Competitive procurement of solar, solar with co-locat
Slide 31: IRP Balancing Factors, S.C. Code Ann. § 58-37-40(C)(2)
IRP Balancing Factors, S.C. Code Ann. § 58-37-40(C)(2) a) resource adequacy and capacity to serve anticipated peak electrical load, including the need for electric capacity and energy required to support economic development and industry retention in the electrical utility's or In reviewing an integ
Slide 32: Questions
Questions 2026 Carolinas Resource Plan | 32
Slide 33: Growing Demand & Load Forecasting
Growing Demand & Load Forecasting 2026 Carolinas Resource Plan | 33
Slide 34: Progression of Load Forecast Over Time Highlights Rising Energy Needs
Progression of Load Forecast Over Time Highlights Rising Energy Needs 2026 Carolinas Resource Plan | 34
Slide 35: Load Forecasting Methodology Overview
Load Forecasting Methodology Overview Inputs Energy Forecast Baseline Forecast and Validation Adjustment Econometric Baseline Data Weather Peak Load UEE, BTM, EV, ED Modeling by Energy Gathering Normalization Forecast Adjustments Customer Class Forecast ▪ Historical energy consumption and ▪ Test all
Slide 36: Primary Forecast Drivers by Customer Class
Primary Forecast Drivers by Customer Class Retail Load Residential Commercial Industrial Government ▪ Population ▪ Gross Domestic Product ▪ Manufacturing ▪ Employment ▪ Income ▪ Income Employment ▪ Rates ▪ Rates ▪ Rates ▪ Industrial Production ▪ Weather ▪ Weather ▪ Weather Indices ▪ Appliance Satura
Slide 37: Forecasting Process
Forecasting Process EXTERNAL DATA INTERNAL DATA Initial Forecast: Efficiency trends Large account trends Load shapes ▪ Customer Growth Multiple Itron SAE modeling runs ▪ MWh Sales Strategic Issues ▪ MW Peaks Appliance saturations Appliance status ▪ Rate design ▪ IVVC ▪ Other EV Load Forecast Weather
Slide 38: Peak and Hourly Load Estimation Process
Peak and Hourly Load Estimation Process Peak and Hourly Load Estimation Process External Source Data Load (MW) Itron/SAE Model Runs Internal Source Data DEC/DEP DEC/DEP Annual Forecasts Hourly Forecasts 2026 Carolinas Resource Plan | 38
Slide 39: Key Takeaways
Key Takeaways The load forecast isn’t just about a Goal is to understand the long-term number, but about presenting a coherent growth in system demand for energy and understanding of relationships between peaks the drivers, inputs, and resulting load forecasts ▪ One of the major inputs into the reso
Slide 40: Questions
Questions 2026 Carolinas Resource Plan | 40
Slide 41: Behind-the-Meter Solar Forecasting
Behind-the-Meter Solar Forecasting 2026 Carolinas Resource Plan | 41
Slide 42: Customer-Owned BTM Solar Capacity
Customer-Owned BTM Solar Capacity Carolina’s current capacity from customer-owned behind-the-meter DEC + DEP BTM Capacity Customers DERs through the end of December 2025. Solar Only 595.8 MW 66,597 Notes: ▪ Does not include utility-scale large distribution or transmission projects. Solar + ▪ Solar p
Slide 43: Forecasting Behind-the-Meter (BTM) Solar
Forecasting Behind-the-Meter (BTM) Solar Forecasted Adoptions Based on the regression equation and the forecasted Historical Payback future payback curve Based on market data Projected Payback Economic view based on: System Size Regression Model ▪ System cost Based on historical connections Develops
Slide 44: Behind-the-Meter Solar Alternate Scenarios
Behind-the-Meter Solar Alternate Scenarios Low Base High ▪ Payback model Base case ▪ Payback model adjustments adjustments Key ▪ Reduced IRA credits ▪ Enhanced IRA credits Assumption ▪ High system costs ▪ Low system costs Differences ▪ Reduced adoption ▪ Enhanced adoption outlook outlook 2026 Caroli
Slide 45: Questions
Questions 2026 Carolinas Resource Plan | 45
Slide 46: Electric Vehicle Forecasting
Electric Vehicle Forecasting 2026 Carolinas Resource Plan | 46
Slide 47: Electric Vehicle Modeling – Guidehouse VAST
Electric Vehicle Modeling – Guidehouse Vehicle Analytics and Simulation Tool (“VAST”) 2026 Carolinas Resource Plan | 47
Slide 48: EV Forecast Model Sources
EV Forecast Model Sources The VAST model is updated by Guidehouse for the Spring 2026 forecast (2026 CRP) Vehicle Adoption Charging Load Impacts Inputs Description Source Inputs Description Source Vehicle US vehicle registration by make, model Vehicle Adoption Number of BEVs and PHEVs IHS Markit Veh
Slide 49: EV Alternate Scenarios
EV Alternate Scenarios EV adoption scenarios are developed to capture a broad range of EV adoption possibilities Low Base High ▪ Higher EV cost Base scenario ▪ Lower EV cost (~10% increase in MSRP) (~10% decrease in MSRP) ▪ Fuel Cost Adjustments ▪ Fuel Cost Adjustments Key (Higher electric prices an
Slide 50: Questions
Questions 2026 Carolinas Resource Plan | 50
Slide 51: Facilitated Discussion: Issues for Consideration in the Planning Cycle
Facilitated Discussion: Issues for Consideration in the Planning Cycle 2026 Carolinas Resource Plan | 51
Slide 52: Open Discussion - Resource Plan Engagement
Open Discussion - Resource Plan Engagement Which questions need to be considered and addressed? 2026 Carolinas Resource Plan | 52
Slide 53: Additional Participation
Additional Participation Meeting materials and presentation recordings* will be uploaded to the website: duke-energy.com/CarolinasResourcePlan_2026 Questions/comments can be submitted through the "Contact Us" form on the website or send an email to DukeCarolinas@gpisd.net ▪ *Q&A portions of meetings
Slide 54: Upcoming 2026 Engagement
Upcoming 2026 Engagement April May June MEETING 1 MEETING 2 MEETING 3 April 29 May 14 Early June Advancing Duke Demand- and Analytical Energy’s Resource Supply-Side Framework & Plan for the Modeling Follow-up Items Carolinas Assumptions Briefings with technical representatives to be held in advance
Slide 55: Next Engagement Meeting
Next Engagement Meeting Engagement Meeting #2 will take place on May 14, 2026 Invitations to register for Meeting 2 have been sent to all stakeholders. Registration is also available on the website: duke-energy.com/CarolinasResourcePlan_2026 2026 Carolinas Resource Plan | 55
Slide 56: 2026 Carolinas Resource Plan | 56
2026 Carolinas Resource Plan | 56