AEP Transmission Company, LLC

Vertically Integrated Utilities Segment

AEGCo

Rockport (a) · 2 · IN · Steam - Coal · 1,310 · 1984

(a)AEGCo owns a 50% interest in the Rockport Plant units. I&M owns the remaining 50%. Figures presented reflect only the portion owned by AEGCo.

Ceredo · 6 · WV · Natural Gas · 516 · 2001

Dresden · 3 · OH · Natural Gas · 665 · 2012

Smith Mountain · 5 · VA · Pumped Storage · 585 · 1965

Amos · 3 · WV · Steam - Coal · 2,950 · 1971

Mountaineer · 1 · WV · Steam - Coal · 1,320 · 1980

Clinch River · 2 · VA · Steam - Natural Gas · 465 · 1958

Hydro (Various Plants) · Various · VA · Hydro · 158 · 1906-1964

Hydro (Various Plants) · Various · WV · Hydro · 53 · 1935-1938

Amherst · NA · VA · Solar · 5 · 2023

Top Hat · NA · IL · Wind · 204 · 2025

Total MWs · 6,921

Rockport (a) · 2 · IN · Steam - Coal · 1,310 · 1984

Cook · 2 · MI · Steam - Nuclear · 2,296 · 1975

Hydro (Various Plants) · Various · IN · Hydro · 7 · 1904-1913

Hydro (Various Plants) · Various · MI · Hydro · 13 · 1908-1923

Solar (Various Plants) · NA · IN · Solar · 31 · 2016-2021

Solar (Various Plants) · NA · MI · Solar · 5 · 2016

Total MWs · 3,662

(a)I&M owns a 50% interest in the Rockport Plant units. AEGCo owns the remaining 50%. Figures presented reflect only the portion owned by I&M.

KPCo

Mitchell (a) · 2 · WV · Steam - Coal · 780 · 1971

Big Sandy · 1 · KY · Steam - Natural Gas · 295 · 1963

Total MWs · 1,075

(a)KPCo owns a 50% interest in the Mitchell Plant units. WPCo owns the remaining 50%. Figures presented reflect only the portion owned by KPCo.

Comanche · 3 · OK · Natural Gas · 228 · 1973

Green Country · 3 · OK · Natural Gas · 904 · 2002

Northeastern, Unit 1 · 3 · OK · Natural Gas · 470 · 1961

Riverside, Units 3 and 4 · 2 · OK · Natural Gas · 160 · 2008

Southwestern, Units 4 and 5 · 2 · OK · Natural Gas · 166 · 2008

Weleetka · 2 · OK · Natural Gas · 90 · 1975

Northeastern, Unit 3 (a) · 1 · OK · Steam - Coal · 472 · 1979

Northeastern, Unit 2 · 1 · OK · Steam - Natural Gas · 435 · 1961

Riverside, Units 1 and 2 · 2 · OK · Steam - Natural Gas · 879 · 1974

Southwestern, Units 1, 2 and 3 · 3 · OK · Steam - Natural Gas · 446 · 1952

Tulsa · 2 · OK · Steam - Natural Gas · 319 · 1956

North Central Wind Energy Facilities (b) · NA · OK · Wind · 675 · 2021-2022

Rock Falls · NA · OK · Wind · 155 · 2017

Flat Ridge IV · NA · KS · Wind · 135 · 2025

Flat Ridge V · NA · KS · Wind · 153 · 2025

Pixley · NA · KS · Solar · 189 · 2025

Total MWs · 5,876

(a)Northeastern, Unit 3 operated on coal up through December 2025 and began to operate on natural gas beginning in January 2026.

(b)PSO owns a 45.5% interest and SWEPCo owns the remaining 54.5% interest in Sundance, Maverick and Traverse. Figures presented reflect only the portion owned by PSO.

Mattison · 4 · AR · Natural Gas · 314 · 2007

Stall · 3 · LA · Natural Gas · 535 · 2010

Flint Creek (a) · 1 · AR · Steam - Coal · 259 · 1978

Turk (a) · 1 · AR · Steam - Coal · 477 · 2012

Welsh (b) · 2 · TX · Steam - Coal · 1,056 · 1977

Arsenal Hill · 1 · LA · Steam - Natural Gas · 111 · 1960

Knox Lee · 1 · TX · Steam - Natural Gas · 344 · 1950

Lieberman · 2 · LA · Steam - Natural Gas · 219 · 1947

Wilkes · 3 · TX · Steam - Natural Gas · 889 · 1964

Diversion Wind Farm · NA · TX · Wind · 201 · 2024

North Central Wind Energy Facilities (c) · NA · OK · Wind · 809 · 2021-2022

Wagon Wheel · NA · OK · Wind · 598 · 2025

Total MWs · 5,812

(a)Jointly-owned with nonaffiliated entities. Figures presented reflect only the portion owned by SWEPCo. The Arkansas jurisdictional portion of SWEPCo’s interest in Turk Plant is not in rate base.

(b)In November 2020, management announced it will cease using coal at the Welsh Plant in 2028. In December 2024, SWEPCo filed an application for a CCN with the APSC, LPSC and PUCT to convert Welsh Plant, Units 1 and 3 to natural gas in 2028 and 2027, respectively.

(c)SWEPCo owns a 54.5% interest and PSO owns the remaining 45.5% interest in Sundance, Maverick and Traverse. Figures presented reflect only the portion owned by SWEPCo.

WPCo

Mitchell (a) · 2 · WV · Steam - Coal · 780 · 1971

(a)WPCo owns a 50% in the Mitchell Plant units. KPCo owns the remaining 50%. Figures presented reflect only the portion owned by WPCo.

TRANSMISSION AND DISTRIBUTION FACILITIES

The AEP System has significant investments in transmission and distribution lines across its Vertically Integrated Utilities, Transmission and Distribution Utilities and AEP Transmission Holdco Segments.

TITLE TO PROPERTY

The AEP System’s generating facilities are generally located on AEP owned property. The greater portion of the transmission and distribution lines of the AEP System has been constructed over property owned by third parties pursuant to easements or along public highways and streets pursuant to appropriate statutory authority. The rights of AEP’s public utility subsidiaries in the realty on which their facilities are located are considered adequate for use in the conduct of their business. Minor defects and irregularities customarily found in title to properties of like size and character may exist, but such defects and irregularities do not materially impair the use of the properties. AEP’s public utility subsidiaries generally have the right of eminent domain which permits them, if necessary, to acquire, perfect or secure titles to or easements on privately held lands used or to be used in their utility operations.

SYSTEM TRANSMISSION LINES AND FACILITY SITING

• Midwest Transmission Holdings, LLC Delaware⁴
• Ohio Power Company Ohio⁴
• Ohio Valley Electric Corporation Ohio⁴
• Public Service Company of Oklahoma Oklahoma⁴
• SWEPCo Storm Recovery Funding LLC Louisiana⁴
• Southwestern Electric Power Company Delaware⁴
• Wheeling Power Company West Virginia⁴

• AEP subsidiaries are exposed to risks through participation in the market and transmission structures in various regional power markets that are beyond their control. (Applies to all Registrants)
• AEP could be subject to higher costs and/or penalties related to mandatory reliability standards. (Applies to all Registrants)
• A substantial portion of the receivables of AEP Texas is concentrated in a small number of REPs, and any delay or default in payment could adversely affect its cash flows, financial condition and results of operations. (Applies to AEP and AEP Texas)
• RISKS RELATED TO MARKET, ECONOMIC OR FINANCIAL VOLATILITY AND OTHER RISKS
• AEP’s financial performance may be adversely affected if AEP is unable to successfully operate facilities or perform certain corporate functions. (Applies to all Registrants)
• Physical attacks or hostile cyber intrusions could severely impair operations, lead to the disclosure of confidential information and damage AEP’s reputation. (Applies to all Registrants)
• The failure of AEP or third-party vendor information technology systems, or the failure to enhance existing information technology systems and implement new technology, could adversely affect AEP. (Applies to all Registrants)
• The amount of taxes imposed on AEP could change. (Applies to all Registrants)
• Changes in U.S. or foreign trade policies, including the imposition of tariffs and other protectionist trade measures, and other factors beyond AEP’s control may adversely impact future net income and cash flows and financial condition.
• If AEP is unable to access capital markets or insurance markets on reasonable terms, for any reason, including negative publicity, it could reduce future net income and cash flows and negatively impact financial condition. (Applies to all Registrants)
• Shareholder activism could cause AEP to incur significant expense, hinder execution of AEP’s business strategy and impact AEP’s stock price. (Applies to all Registrants)
• Downgrades in AEP’s credit ratings could negatively affect its ability to access capital. (Applies to all Registrants)
• AEP and AEPTCo have no income or cash flow apart from dividends paid or other payments due from their subsidiaries. (Applies to AEP and AEPTCo)
• Volatility in the securities markets, interest rates, and other factors could substantially increase defined benefit pension and other postretirement plan costs and the costs of nuclear decommissioning. (Applies to all Registrants and to AEP and I&M with respect to the costs of nuclear decommissioning)
• Supply chain disruptions, tariffs and inflation could negatively impact operations and corporate strategy. (Applies to all Registrants)
• AEP’s results of operations and cash flows may be negatively affected by a lack of growth or slower growth in the number of customers, a decline in customer demand or a recession. (Applies to all Registrants)
• Failure to attract and retain an appropriately qualified workforce and management could harm results of operations. (Applies to all Registrants)
• Changes in the price of purchased power and commodities, the cost of procuring fuel, emission allowances for criteria pollutants and the costs of transport may increase AEP’s cost of purchasing and producing power, impacting financial performance. (Applies to all Registrants except AEP Texas, AEPTCo and OPCo)
• AEP is subject to physical and financial risks associated with climate change. (Applies to all Registrants)
• The occurrence of one or more wildfires could cause tremendous loss, impact the market value and credit ratings of Registrants’ securities and have a material adverse effect on Registrants’ financial condition. (Applies to all Registrants)
• The generation, transmission and distribution of electricity are dangerous and involve inherent risks of damage to private property and injury to AEP’s workforce and the general public. (Applies to all Registrants)
• Adverse outcomes in AEP’s material legal proceedings could materially and adversely affect AEP’s results of operations and financial condition. (Applies to all Registrants)
• Disruptions at power generation facilities owned by third-parties could interrupt the sales of transmission and distribution services. (Applies to AEP, AEP Texas and OPCo)
• Most of the real property rights on which the assets of AEPTCo are situated result from affiliate license agreements and are dependent on the terms of the underlying easements and other rights of its affiliates. (Applies to AEPTCo)
• Compliance with legislative and regulatory requirements may lead to increased costs and result in penalties. (Applies to all Registrants)
• RISKS RELATED TO OWNING AND OPERATING GENERATION ASSETS AND SELLING POWER
• Costs of compliance with existing and evolving environmental laws are significant. (Applies to all Registrants except AEPTCo)
• Regulation of GHG emissions could materially increase costs to AEP and its customers or cause some electric generating units to be uneconomical to operate or maintain. (Applies to all Registrants except AEP Texas, AEPTCo and OPCo)
• AEP may be unable to procure or construct generation capacity when needed or to recover the costs of such generation capacity. (Applies to all Registrants except AEP Texas, AEPTCo and OPCo)
• Courts adjudicating nuisance and other similar claims in the future may order AEP to pay damages or to limit or reduce emissions. (Applies to all Registrants except AEP Texas and AEPTCo)
• Commodity trading and marketing activities are subject to inherent risks which can be reduced and controlled but not eliminated. (Applies to all Registrants except AEP Texas, AEPTCo and OPCo)
• Parties with whom AEP has contracts may fail to perform their obligations, which could harm AEP’s results of operations. (Applies to all Registrants)
• AEP relies on electric transmission facilities that AEP does not own or control. If these facilities do not provide AEP with adequate transmission capacity, AEP may not be able to deliver wholesale electric power to the purchasers of AEP’s power. (Applies to all Registrants)
• OVEC may require additional liquidity and other capital support. (Applies to AEP, APCo, I&M and OPCo)