Data Center Tariff

2026 Initial Study Tranche

After resolving the initial data center queue, AEP Ohio will continue to evaluate new data center projects in tranches and issue corresponding contracts and expected in-service dates. The next round of studies will commence on March 2, 2026. Applications must be received by February 28, 2026, to be considered for this tranche. AEP Ohio expects to begin load studies in October 2026 for applications submitted after February 28, 2026.

Mandatory Process for Customers Interested in Moving Forward with Data Center Projects in AEP Ohio's Service Territory

All new data centers or expansions seeking service from AEP Ohio must complete an application in PowerClerk. This process is mandatory for all new data center service requests. Data centers or expansions of 25,000 kW or greater also must pay a load study fee and follow the process outlined below. Data centers requesting less than 25,000 kW will be contacted by the AEP Ohio team.

Applications are accepted on an ongoing basis. After registering and creating a username and password in PowerClerk, prospective data center customers will be able to submit a new application. Following submission, those customers may track an application's progress and ask questions by logging in to PowerClerk.

Additional information will be needed for projects that ultimately move forward, and customers will need to provide detailed load information at a future date. Examples of this detailed load information include the Load Dynamic NERC questionnaire and Appendix B.2: End-User Connection form of the AEP Transmission Interconnection requirements. The final plan of service will be subject to RTO review and approval.

Steps for Processing New Service Requests of 25,000 kW or Greater

The following process applies to a new facility or expansion of an existing facility under Schedule DCT:

1. A customer may request a load study from AEP Ohio via the PowerClerk application, so long as it controls the property (owns, leases or has an option) and provides a specific location, load ramp and final load. AEP Ohio will charge a one-time fee of $10,000 to $100,000 for each load study to be paid within 45 days. If the load study fee is not paid, the load study will not be completed, and the customer's service request will be considered withdrawn.
2. AEP Ohio will conduct a load study and determine a service plan for each customer that has paid the load study fee. The Company will try to prioritize customers on a "first-come, first-served" basis and will make reasonable efforts to complete a load study within (i) 60 days if regional transmission upgrades are needed to serve the customer; or (ii) 45 days for all other situations. If regional transmission upgrades are needed before AEP Ohio can serve the customer, AEP Ohio will group customers based on the expected capacity increase associated with each regional upgrade project.
3. Upon completion of the load study and development of a plan for service, AEP Ohio will present two contracts to the customer for signature. The Letter of Agreement (LOA) requires customers to reimburse AEP Ohio 100% of the buildout costs if the customer cancels — or delays the project by more than 12 months — prior to the target energization date. Once the project is completed, the LOA obligation will expire. The Electric Service Agreement (ESA) includes a good faith estimate of the energization date of service, and the contract term will begin on the actual date of energization.
4. Customers have 60 days to sign their LOA and ESA. Customers who do not sign within that timeframe will forfeit their spot.

AEP Ohio will include the Schedule DCT customer's load in its PJM forecast, and the necessary transmission infrastructure, if any, to serve the customer will be constructed pursuant to the PJM transmission planning process. Once all infrastructure is in place to begin service, AEP Ohio will energize the customer and the contract will begin.

Important Tariff Information

Load Study Fees

Load study fees will apply as follows:

kW Capacity Request	Study Fee
>25,000 kW to <50,000 kW	$10,000
50,000 kW to <100,000 kW	$50,000
100,000 kW and greater	$100,000

Load Ramp Period

The load ramp period will not exceed four years and the contract capacity will be no less than:

• Year One: 50% contract capacity
• Year Two: 65% contract capacity
• Year Three: 80% contract capacity
• Year Four: 90% contract capacity

Contract Term

The initial term of the contract will equal the load ramp period (no greater than four years) plus eight years. If regional transmission upgrades are needed, the in-service date estimate will be high-level and contingent on numerous factors outside of AEP Ohio's control. If electric infrastructure is not in place to serve the customer by the estimated in-service date, the customer may petition the Commission for an adjustment to the contract term based on the facts and circumstances presented at the time (but the contract term will otherwise remain).

Collateral Requirement

For purposes of the collateral requirement under this section of Schedule DCT, "customer" shall include both the customer and the customer's financial sponsor as long as the sponsor is a co-signer on the contract with AEP Ohio. The customer, if not having both (a) a credit rating of at least A- from S&P Global Inc. and A3 from Moody's Corporation and (b) cash and cash equivalents on an audited balance sheet prepared in accordance with Generally Accepted Accounting Principles greater than 10 times the Collateral Requirement, must provide a guarantee or collateral at the time of signing the contract equal to 50% of the total minimum charges for the full term of the contract, calculated based on AEP Ohio's rates in effect at the time the Collateral Requirement is provided. At this time, surety bonds are not an acceptable form of collateral. Please see Schedule DCT for more details on the forms of collateral accepted.

Minimum Demand Charges

Monthly billing demand will be no less than the greater of:

1. 85% of the customer's highest previously established monthly billing demand during the past 11 months; or
2. Percentage of the customer's contract capacity according to the following schedule: for customers with 25,001 kW to 75,000 kW of total contract capacity: minimum demand is 15,000 kW plus 85% of any capacity above 25,000 kW; or with more than 75,000 kW of total contract capacity, minimum demand is 57,500 kW plus 100% of any capacity above 75,000 kW. However, the minimum demand cannot exceed 85% of the total contract capacity.

Assigning Retail Capacity to Another Customer

If a customer wishes to reduce its contract capacity under Schedule DCT during the term of the contract, it may request that AEP Ohio assign up to 25% of its contract capacity to another Schedule DCT customer in lieu of paying some or all of its exit fee associated with the reallocated capacity. If a successful assignment is made, the assigning customer would be relieved of its contractual obligations going forward relating to the reallocated capacity and shall continue to be responsible for any remaining unused contract capacity. The assigning customer cannot sign up for replacement capacity until a reasonable period after assigning capacity passes or circumstances demonstrably change. Consistent with any applicable legal or regulatory requirements, AEP Ohio will make a good faith effort to accommodate this request so long as all the following conditions are met:

1. The receiving customer signs an ESA for the reallocated capacity under Schedule DCT;
2. AEP Ohio determines that the transfer is electrically feasible;
3. The receiving customer pays for all equipment and any other incremental costs required to transfer the reallocated capacity;
4. The receiving customer satisfies all collateral requirements under Schedule DCT;
5. Transferring the reallocated capacity would not result in any stranded investment being recovered from other ratepayers (or, if it would, the assigning customer pays for the full cost of the stranded equipment); and
6. Both parties attest in writing to AEP Ohio that no money or other compensation beyond covering the cost items listed above in this paragraph is exchanged or provided as consideration for the reallocated capacity.

Aggregation

All new loads of affiliated companies and companies with common ownership will be considered in the aggregate for purposes of calculating the minimum demand charge. If there are multiple new facilities at a single location of less than 25,000 kW, but the aggregate total load is greater than 25,000 kW, all of those facilities will be subject to Schedule DCT.

Behind-the-Meter (BTM) Generation

To ensure that the customer's election to net does not result in it exceeding its contract capacity, equipment must be in place and maintained through the term of the ESA to instantaneously curtail load equal to or greater than the BTM generation output, subject to the then-current technical requirements of the transmission provider. If the BTM generation equipment fails and results in the customer exceeding its contract capacity, the Company reserves the right to raise before the Commission any unresolved reliability or safety concerns based on the facts and circumstances presented at that time.

Exit Fees

After the initial term, contracts shall remain in effect unless terminated by either party by providing written notice to the other party no later than three years prior to the requested date of termination. After the initial term, either party may request a modification to the contract capacity by providing written notice to the other party no later than three years prior to the requested modification date. During the initial term of the contract, the customer will be financially responsible to pay the minimum charges regardless of the customer choosing to curtail, reduce, suspend or terminate service. If, after completion of the fifth year of the contract after the load ramp period, the customer chooses to pay an exit fee equal to minimum charges for 36 months after notice of termination, the customer can thereafter terminate the contract. Example: A customer with a three-year load ramp period may pay the exit fee and terminate the contract only after year eight of the contract.

Additional Questions for the AEP Ohio Team

Rates and other important terms and conditions are fully described in the Schedule DCT. If you have questions related to the DCT or the registration process, please email us at aepohcapacityreq@aep.com.