Ohio customers are set to pay roughly $3 billion for electric transmission this year as transmission prices continue a 15-year climb. Beginning in April 2026, manufacturing customers in AEP Ohio’s secondary and primary rate classes, all non-residential customers in Toledo Edison, and primary and transmission-level customers in Cleveland Electric Illuminating will see higher transmission charges. AES Ohio and Duke Energy have not yet finalized new transmission rates.
This cost surge did not begin with data center headlines. Utility transmission spending has been climbing for years, driven largely by supplemental transmission projects that face limited regulatory scrutiny even as the bills keep landing on customers.
That is why Ohio should be skeptical when utilities claim the latest tariff or rider will protect everyone else. AEP Ohio has argued its data center tariff shields other customer classes from infrastructure costs tied to large new load, but no data centers are currently enrolled in the tariff and transmission spending is still rising statewide. Ohio Manufacturers’ Association energy experts have raised that warning repeatedly: when utility spending keeps growing and customers keep paying more, the promised protections are not much protection at all. 3/30/2026