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Policy record, subnational

Ohio PUCO: AEP Ohio Schedule DCT data center tariff (Case 24-508-EL-ATA)

In effectOhio, United States (AEP Ohio service territory)Legally binding

On 9 July 2025 PUCO adopted a settlement and ordered AEP Ohio to file data centre tariffs and lift its moratorium on connecting new data centres. Schedule DCT took effect on 23 July 2025. During the load ramp period, monthly billing demand cannot be less than 85% of the customer's load ramp contract capacity. Afterwards it cannot be less than the greater of 85% of the highest monthly billing demand in the past 11 months or a minimum demand: for 25,001 to 75,000 kW of total contract capacity, 15,000 kW plus 85% of capacity above 25,000 kW; above 75,000 kW, 57,500 kW plus 100% of capacity above 75,000 kW, capped at 85% of total contract capacity. New loads of affiliated companies above 25,000 kW are aggregated.

Current status

Effective 23 July 2025 per AEP Ohio. AEP Ohio's page lists a February 2026 update and a DCT load study letter, not summarised here.

Who it applies to

New data centre load in AEP Ohio territory above 25,000 kW of total customer contract capacity (affiliates aggregated). Existing load is not counted toward that total.

Exceptions: Existing load is excluded from the contract capacity total.

What it means for cooling and power

Columbus-area campuses pay for most of their contracted capacity whether or not it is used, so the contract capacity requested should follow the IT deployment plan closely.

Editorial: business implications, not legal advice.

History

  1. 23 Jul 2025: Schedule DCT effective
  2. 23 Jul 2025: Effective date
  3. 11 Jul 2025: AEP Ohio compliance tariff filed
  4. 9 Jul 2025: PUCO opinion and order adopting the settlement

Markets

Technologies

Lifecycle

  1. Proposed or announced9 Jul 2025
  2. Consultationdate not recorded
  3. Adopted9 Jul 2025
  4. In effect23 Jul 2025

Effective 23 July 2025 per AEP Ohio. AEP Ohio's page lists a February 2026 update and a DCT load study letter, not summarised here.

Sources (2), last checked 19 Oct 2026
  1. PUCO orders AEP Ohio to create data center specific tariff (opens in a new tab), Public Utilities Commission of Ohio, published 9 Jul 2025, accessed 19 Oct 2026
  2. Data Center Tariff (opens in a new tab), AEP Ohio, published 2026, accessed 19 Oct 2026

Last checked 19 Oct 2026 by CoolPower Index research (automated, sourced). Report a correction.

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