Screener / SEC EDGAR /CIK 0001326160 /10-K filed Feb 26, 2026, compared with Feb 27, 2025 /Numbers from the XBRL of the 10-Ks
NYSE Utilities · Electric & Gas Utilities

Duke Energy DUK

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The 10-K against last year's

231 changes: 46 added, 43 removed, 140 reworded, 2 quiet changes

10-K Feb 26, 2026 vs Feb 27, 2025

10-K 0001326160-26-000014 (Feb 26, 2026) vs 10-K 0001326160-25-000072 (Feb 27, 2025)

The paragraph that changed most in each section

The redline

Marked against last year's 10-K: cut words struck through, new words highlighted.

Risk Factors265 words changed in this paragraph; it is 34% similar to last year's version.
Duke Energy’s long-term strategy requires the extensive capital investment in generation and transmission facilities. The construction of new projects, either wholly owned or partially owned, which such projects involve a number of risks, including construction delays, delays in or failure to receive required regulatory approvals and/or sitting siting or environmental permits, nonperformance by equipment and other third-party suppliers, and increases in equipment and labor costs. To limit costs beyond expectations. Uncertainty in long-term customer usage patterns or lower than anticipated load growth could impact the risks nature, timing or magnitude of these construction projects, the Company’s investments, and consequently, the achievement of the Company’s growth objectives. Additionally, to support expected demand growth, Duke Energy Registrants enter into equipment purchase orders will have compounding risks due to the simultaneous development and construction contracts and incur engineering and design service costs in advance of receiving necessary regulatory approvals and/or siting or environmental permits. If any multiple facilities. Completion of these types of large projects are canceled is subject to substantial delay or cost overrun risks that have, or may occur again, in the future, including those related to labor costs, availability of materials, productivity of workforce/equipment; as well as supply chain issues including, quality, availability, disruptions and potential tariff impacts; weather related delays; start up issues; public and regulatory support; transmission grid interconnection issues; and potential for any reason, increased financing costs as a result of interest rates and impact of delays including failure to receive necessary regulatory approvals and/or siting or environmental permits, loss of otherwise available tax credits and incentives. Project cancellations may result in significant cancellation penalties under the equipment purchase orders and construction contracts could occur. In addition, if any or impairment charges. If a construction work or investments have been recorded as an asset, an impairment may need to be recorded in the event the project is canceled. completed, the total costs may be higher than estimated or deemed imprudent and may be disallowed or otherwise not recoverable through regulated rates.

Source: Item 1A, 10-K 0001326160-26-000014 vs Item 1A, 10-K 0001326160-25-000072

MD&A238 words changed in this paragraph; it is 40% similar to last year's version.
Operational Excellence. The reliable and safe operation of our power generating facilities, electric transmission and distribution systems and natural gas infrastructure in our communities continues to be foundational to serving our customers, our financial results and our credibility with stakeholders. Operational excellence is especially critical to successfully navigate effective storm response and to efficiently provide the continuity of service our customers demand, regardless of weather or circumstance. Our workforce and contract partners work hard to prepare for storm season through drills, material planning, call center readiness, contingency planning and customer communications. In such extreme circumstances, our immediate priority is, and always will be, executing the extensive storm preparation and response work to ensure the safe, timely, timely and efficient restoration of service to impacted customers as quickly as possible. Around-the-clock power restoration efforts continued following the historic damage inflicted by these storms with lineworkers, tree trimmers and removal experts, state department of transportation workers and countless others, working to repair and, in certain areas, completely rebuild, the critical electricity infrastructure that powers and supports the communities we serve. Our operations teams worked diligently, restoring power to approximately 5.5 million customers. We've also seen the benefits of ongoing grid hardening investments, leveraging self-healing technologies and remote restoration capabilities to automate the rerouting of power, more effectively deploy resources, resources and reduce the frequency or duration of outages for many of our customers during severe weather events. Our ability to effectively handle all facets of storm response efforts while making ongoing investments to enhance the reliability and physical security of the grid is a testament to our team’s extensive preparation and coordination, applying lessons learned from previous storms, and on-the-ground management throughout the restoration efforts. Duke Energy is proud to have received 22 Emergency Response Awards since EEI began recognizing storm response in 1998 (including 11 for assisting other utilities), including for the severe storm season of 2024.

Source: Item 7, 10-K 0001326160-26-000014 vs Item 7, 10-K 0001326160-25-000072

Legal Proceedings123 words changed in this paragraph; it is 73% similar to last year's version.
On December 4, 2024, the town of Carrboro, North Carolina, filed a lawsuit against Duke Energy in the North Carolina Superior Court, Orange County, alleging that Duke Energy and its predecessor companies knew since the late 1960s that fossil-fuel fossil fuel emissions could cause global climate changes and engaged in a campaign to conceal the dangers of fossil fuel emissions from the public, regulators, legislators, and others, resulting in a delayed transition away from fossil fuel emissions and worsening climate change. The lawsuit also alleges that Duke Energy misled the public regarding Duke Energy’s support for, and actions toward, transitioning its fossil fuel portfolio to renewable energy. The damages alleged range from road and stormwater-system impacts to increased electricity costs and recurring invasions and interferences from extreme weather events. The lawsuit asserts state-law claims for public nuisance, private nuisance, trespass, negligence, and gross negligence, and is seeking an unspecified amount of monetary damages. The case has been transferred to the North Carolina Business Court. Duke Energy cannot predict filed a motion to dismiss the outcome litigation based on lack of this matter. subject-matter jurisdiction on March 17, 2025, and filed a motion to dismiss based on failure to state a claim on which relief can be granted on May 9, 2025. Oral argument regarding Duke Energy's motions to dismiss was held on September 25, 2025. As requested by the court, supplemental briefing addressing various aspects of causation, including traceability and proximate cause, was filed on October 25, 2025. On February 12, 2026, the court granted Duke Energy's motion to dismiss the litigation based on lack of subject-matter jurisdiction. In light of the dismissal, the court denied the motion to dismiss for failure to state a claim as moot.

Source: Item 3, 10-K 0001326160-26-000014 vs Item 3, 10-K 0001326160-25-000072

Accounting Policies86 words changed in this paragraph; it is 48% similar to last year's version.
Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022 and recorded an asset 2022. The historical cost of the rights acquired from the auction, totaling $150 million related to the contract is recorded in Other within Other noncurrent assets on the Duke Energy's Consolidated Balance Sheets as of December 31, 2024 2025, and 2023. The asset is recorded at historical cost and is subject to impairment testing should circumstances indicate the carrying value may not be recoverable. In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, which was moved to the EU&I segment. See Notes 2 and 3 for further information. 2024.

Source: Item 8, Note 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, 10-K 0001326160-26-000014 vs Item 8, Note 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, 10-K 0001326160-25-000072

Sentences and paragraphs added, removed or reworded

Every change, by type

Sentences and paragraphs of DUK's Risk Factors and MD&A, 10-K Feb 26, 2026 against 10-K Feb 27, 2025. Each links to the text at sec.gov.

AddedRisk Factors
The Duke Energy Registrants may also face heightened competitive pressures arising from other utilities and energy suppliers that construct or install generation facilities directly for customers, as well as from customers who develop their own generation capabilities. Additionally, the establishment of municipal utilities within Duke Energy's service territories could further intensify competition. These developments have the potential to materially and adversely affect the Duke Energy Registrants' results of operations, financial position or cash flows.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedRisk Factors
The Duke Energy Registrants are subject to numerous environmental laws and regulations affecting many aspects of their present and future operations, including CCR, air emissions, water quality, wastewater discharges, solid waste and hazardous waste. For example, new EPA rules issued in April 2024, among other things, impose stringent GHG emissions limitations on existing coal plants and new natural gas plants and more stringent air toxic limits on existing coal plants, increase limitations on wastewater discharge, and impose groundwater monitoring and corrective action requirements on previously unregulated coal ash sources at regulated facilities (CCR Management Units) and inactive surface impoundments at retired generating facilities (Legacy CCR Surface Impoundments). Potential legal challenges to such rules or actions to repeal or modify requirements may not be successful, and adherence to these rules may increase the cost of compliance, impact generation resource mix, force carbon reductions or negatively impact customer reliability and perceived value. For example, EPA Rule 111 as issued imposes stringent GHG emissions limitations and reliance on carbon capture technologies that are not yet adequately demonstrated at utility scale. These and other environmental laws and regulations can result in increased capital, operating and other costs. Additionally, new state legislation in response to such regulations could impose carbon reduction objectives that are more aggressive than the Company's plans. These regulations may require the Duke Energy Registrants to make additional capital expenditures or increase operating and maintenance costs.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedRisk Factors
The Duke Energy Registrants are exposed to financial and operational risks associated with growth including volatility in sales, supply and demand forecasts, and customer usage changes which could negatively impact the Duke Energy Registrants' results of operations.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedRisk Factors
At times, demand can exceed available generation capacity and emerging large loads – such as hyperscale data centers and industrial facilities – present unique risks due to their high demand, rapid fluctuations, and unpredictable operational profiles, which can further strain bulk power system reliability and grid stability. Meeting these requirements may necessitate substantial investments in generation, transmission and advanced grid infrastructure, while early termination of service agreements or stranded assets could result if investments are not fully recovered. Additionally, failure to comply with evolving regulatory requirements and reliability standards, including those established or those that may be established in the future by the NERC and regional entities, could result in penalties, operational restrictions or reputational harm. Compliance obligations related to interconnection processes, system planning and reliability performance for large loads may require significant resources and could impact project timelines and costs.
Read it in 10-K Feb 26, 2026 at sec.gov
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AddedRisk Factors
Duke Energy’s operations and capital projects are exposed to supply chain disruptions, inflation, tariffs and export restrictions. These factors may increase costs, extend lead times for critical equipment and/or delay construction and maintenance activities. Rising demand for electric infrastructure and international trade developments, including potential export controls on certain rare earth materials and technologies used in electric utility infrastructure, may further constrain supply availability. These risks may result in higher costs than estimated or than allowed under approved regulatory mechanisms and could impact our financial results, capital plan execution or our ability to deliver on system modernization goals.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedRisk Factors
The Duke Energy Registrants have incurred, and may incur additional costs or delays in the construction of new plants or facilities and may not be able to recover their investments in whole or in part.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedRisk Factors
Duke Energy’s long-term strategy requires extensive capital investment in generation and transmission facilities. The construction of such projects involve a number of risks, including construction delays, delays in or failure to receive required regulatory approvals and/or siting or environmental permits, nonperformance by equipment and other third-party suppliers, and increases in equipment and labor costs beyond expectations. Uncertainty in long-term customer usage patterns or lower than anticipated load growth could impact the nature, timing or magnitude of the Company’s investments, and consequently, the achievement of the Company’s growth objectives. Additionally, to support expected demand growth, Duke Energy Registrants will have compounding risks due to the simultaneous development and construction of multiple facilities. Completion of these types of large projects is subject to substantial delay or cost overrun risks that have, or may occur again, in the future, including those related to labor costs, availability of materials, productivity of workforce/equipment; as well as supply chain issues including, quality, availability, disruptions and potential tariff impacts; weather related delays; start up issues; public and regulatory support; transmission grid interconnection issues; and potential for increased financing costs as a result of interest rates and impact of delays including loss of otherwise available tax credits and incentives. Project cancellations may result in significant cancellation penalties under the equipment purchase orders and construction contracts or impairment charges. If a construction project is completed, the total costs may be higher than estimated or deemed imprudent and may be disallowed or otherwise not recoverable through regulated rates.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
This is a transformative period for the utility industry propelled by energy modernization in support of load growth acceleration and the ongoing shift to more efficient and resilient energy infrastructure. Through our strategic investments and initiatives, we have maintained a key role in this transition, as we strengthen the energy system for our customers. In 2025, we advanced key policy and regulatory activities, executed strategic transactions to support growth and delivered safe and reliable utility services to our customers and communities. We also made progress advancing through the preliminary stages of the approval and construction for significant new generation investments. We continue to operate and maintain our infrastructure in a manner that extends the useful lives for critical assets, while executing a disciplined approach in the prioritization and deployment of capital for new investments. We are proud of the constructive regulatory outcomes that we advocated for our customers as we prepare for growth in energy demand driven by ongoing migration into our attractive service territories, continued electrification and onshoring from domestic industries, data center growth and other investments, including those related to support the broader utilization of AI.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
The fundamentals of our business remain strong and allow us to deliver earnings growth and pay common stock dividends in a low-risk, predictable and transparent way. We achieved our 2025 financial commitments by delivering earnings growth above the midpoint of our adjusted earnings guidance range. Duke Energy also paid a cash dividend on its common stock for the 99th consecutive year. We are committed to manage a business portfolio that delivers a reliable and growing dividend and our company remains focused on maintaining reliability, providing value and keeping costs as low as possible to deliver on the commitments made to our customers, communities, employees, investors and other stakeholders.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
Acting on Investment Opportunities. We operate in some of the most attractive jurisdictions in the country and our service territories continue to experience accelerating investment opportunities driven by a deepening economic development pipeline and significant customer growth. The reliable, low-cost power we provide plays a key role in continuing to bring business and job growth to our region. To efficiently fund this growth and the related capital required in the coming years, we entered into two strategic transactions in the third quarter of 2025. In July 2025, we announced the sale of Piedmont’s Tennessee business to Spire Inc. for $2.48 billion. Subject to regulatory approvals, we expect to complete the Piedmont transaction on March 31, 2026. In August 2025, we entered into an investment agreement to receive $6 billion in exchange for an eventual anticipated 19.7% indirect investment in Duke Energy Florida. The transaction is expected to be completed through a series of closings starting in March 2026 through mid-2028. Proceeds from both transactions will support Duke Energy’s expanded capital plan and replaces certain originally planned long-term debt and common equity issuances. Both of these transactions, along with our unwavering focus on operational excellence and value creation, demonstrate our continued ability to meet the unprecedented long-term growth anticipated across our service territories. See Note 2 to the Consolidated Financial Statements, "Dispositions," for further information.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
In 2025, we continued to utilize these regulatory structures across most of our service territories including PBR and MYRP in North Carolina, MYRP in Florida, and grid investment riders in the Midwest. Additionally, new legislation was finalized this year in Ohio, South Carolina and North Carolina that is expected to provide additional customer benefits and further modernize recovery mechanisms, including an opportunity for a three-year rate plan with forward-looking test periods (HB15 in Ohio), the establishment of an electric rate stabilization mechanism that provides for annual adjustments to electric base rates (Act 41 in South Carolina) and more timely recovery of fuel costs and baseload generation financing costs (SB266 in North Carolina), among other provisions and regulatory recovery enhancements. All of these legislative initiatives are a testament to the strong jurisdictions in which we operate and will help continue to position us to reliably serve our customers in a cost-effective manner while making the needed investments to support our growing communities.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•New rates were effective in January 2025 for Duke Energy Florida's new three-year rate plan. Also in January, Piedmont and Duke Energy Indiana received constructive general rate case orders from the NCUC and IURC, respectively. Duke Energy Kentucky received a constructive order on its electric base rate case with new rates effective in July and also filed a natural gas base rate case, receiving a constructive order in December, with new rates effective in January 2026. Also in December, both Duke Energy Progress and Duke Energy Carolinas received constructive orders from the PSCSC on their South Carolina base rate cases. New rates were effective in February 2026 for Duke Energy Progress and will be effective in March 2026 for Duke Energy Carolinas. In November, Duke Energy Carolinas and Duke Energy Progress filed PBR applications in North Carolina, which includes proposed cost recovery over a two-year MYRP period. Evidentiary hearings are scheduled to commence in the third quarter of 2026.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•In October 2025, Duke Energy Progress received an order from the NCUC granting the CPCN for the second CC unit in Person County and Duke Energy Indiana received an order from the IURC granting the CPCN for the Cayuga CC project. Also in October 2025, Duke Energy Carolinas filed for a CECPCN with the PSCSC for a new CC unit in Anderson County, South Carolina. In November 2025, Duke Energy Carolinas filed for a CPCN for two new CTs at the existing Buck CC station. These advanced natural gas plants, along with our other planned CTs, will provide critical generation as we continue to modernize our energy infrastructure in the coming years.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•As highlighted above, we reached key milestones to recover costs related to critical storm restoration activities from the 2024 historic storm season while also seeking to minimize customer bill impacts resulting from hurricanes Debby, Helene and Milton. In February 2025, the FPSC voted to approve Duke Energy Florida's storm cost recovery over 12 months beginning in March 2025. In the Carolinas, Duke Energy Carolinas and Duke Energy Progress reached constructive settlements and financing orders were issued by both the NCUC and PSCSC. We issued North Carolina storm recovery bonds in September 2025 and South Carolina storm recovery bonds in November 2025, fully recovering these unprecedented storm costs in an efficient and cost-effective manner for our customers under existing regulatory mechanisms.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•Our nuclear sites continue to positively impact the customers we serve by safely producing clean, reliable and low-cost electricity, as well as providing economic benefits for our local communities with thousands of well-paying jobs and significant tax benefits. During 2025, our advocacy efforts were critical to ensure the OBBBA preserved nuclear PTCs and related transferability markets and we continued to sell nuclear PTCs to further reduce the cost of electricity for our customers. In March 2025, the NRC issued a subsequent license renewal for Oconee that allows an additional 20 years of operation through 2054. Oconee is the first Duke Energy nuclear facility to reach this significant approval milestone to permit extension of its operations to 80 years. In April 2025, we submitted an application to the NRC for Robinson to extend the plant's operations an additional 20 years through 2050.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•In July 2025, Duke Energy Carolinas filed a license application with the FERC to extend the operating license for the Bad Creek Pumped Storage Hydroelectric Station. Located in South Carolina, Bad Creek is designed to produce significant amounts of energy when our customers need it most, performing a vital role on the company's system since 1991. If approved, the application would extend plant operations for an additional 50 years through 2077.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
•In August 2025, we filed applications to combine our utilities that operate in the Carolinas by which Duke Energy Progress will merge into Duke Energy Carolinas. If approved, the proposed transaction would result in a single electric utility serving our North Carolina and South Carolina service territories. The single utility’s ability to plan, execute and operate resources more efficiently is expected to result in substantial cost savings to benefit customers by reducing the overall costs to serve. We received FERC approval in January 2026 and the targeted effective date of the transaction is January 1, 2027, subject to remaining regulatory approvals from both the NCUC and PSCSC.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
As we move forward to the year 2050, further technological advancement will be necessary to continue our progress. We will advocate and be actively involved in the research and development of new technologies to advance the deployment of new carbon-free dispatchable resources. This includes advanced nuclear technologies, longer-duration energy storage, carbon capture and zero-carbon fuels. As it relates to advanced nuclear, we intend to preserve flexibility through the review of various technologies including both small modular reactors and large-scale nuclear options. Our plan for energy modernization will continue to focus on delivering cleaner energy in a manner that protects grid reliability and maintains low costs for our customers while also meeting the growing energy demands of the economically vibrant communities we serve.
Read it in 10-K Feb 26, 2026 at sec.gov
AddedMD&A
In August 2025, Duke Energy, Progress Energy and Florida Progress entered into an investment agreement with an investor pursuant to which Florida Progress agreed to issue up to 19.7% of its issued and outstanding membership interests following a series of closings for an aggregate investment of $6 billion. The first closing is expected to occur in March 2026. Termination of the investment agreement under certain specified circumstances prior to the first closing would require the investor to pay Progress Energy a $240 million termination fee and could result in Duke Energy to seek alternative funding sources such as additional long-term debt and common equity issuances. For additional information, see Note 2 to the Consolidated Financial Statements, “Dispositions.”
Read it in 10-K Feb 26, 2026 at sec.gov

Sources

The two latest 10-Ks on EDGAR, section by section. Each change links to the text at sec.gov.

Also

New risk factors: paragraphs with nothing like them last year, quoted in full.

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