How to Spot and Dispute Ohio Business Bill Errors

Ohio market insight · Bills & budgets

Updated September 27, 2026Ohio Commercial Energy editorial teamHow we review content Book a free 15-min bill review

Market-reference note: Numerical default-price examples below retain their cited 2026 reference period. They are historical class-level context, not a current account quote. Confirm the applicable business rate, components and effective dates on your bill before comparing an offer. How to establish your benchmark.

The short answer

Most errors on Ohio business electric bills follow a few patterns:

the wrong rate schedule
estimated or mis-multiplied meter reads
a billing demand set by a ratchet or a one-off peak
the wrong kWh-tax treatment
a supplier price that doesn't match your contract

Check each one against your tariff, your meter data and your contract. Raise delivery and metering problems with the utility and supply-price problems with the supplier, in writing. If neither fixes it, file an informal complaint through the PUCO call center at 1-800-686-7826. A formal complaint is the next step after that.

This page is about finding and disputing errors. For what each part of the bill means, see how to read a commercial electric bill. For how AEP Ohio, Duke, AES Ohio and FirstEnergy lay out their bills, see utility bill layouts. For the cost stack behind the total, see cost components. For charges that changed legitimately in 2025–2026, see non-shoppable charges.

The error checklist

Error	Where to look	What "wrong" looks like	Who fixes it
Wrong rate schedule	Rate code on the bill compared with the tariff's eligibility rules	A site whose demand fell still billed on a larger-customer schedule, or the reverse	Utility
Estimated reads	Read type ("E" or "estimated")	Several estimates in a row, then a large catch-up bill	Utility
Meter multiplier	The multiplier or constant on the bill, especially after a meter swap	kWh or kW off by a round factor	Utility
Billing demand or ratchet	Billing kW compared with actual peak kW; the tariff's "determination of demand" section	A ratchet from a one-time event, or a ratchet applied that your schedule doesn't have	Utility
Power factor adjustment	A kVA or power-factor line	An adjustment when your power factor meets the tariff threshold	Utility
kWh tax	The tax line	Every kWh taxed at the top rate, a sales-tax line, or the tax billed to a self-assessing purchaser	Utility
Supplier price mismatch	Supplier ¢/kWh compared with the contract, and the start and end dates	Wrong price, extra pass-through charges not in the contract, or still on the SSO after enrollment	Supplier (utility for enrollment dates)
Unauthorized supplier	Supplier name on the bill	A supplier you never signed with	Supplier, then PUCO

Not everything unfamiliar is an error. A ratchet that your tariff actually contains, applied correctly, is a valid charge. Your options are to prevent the next one and to check that it rolls off on schedule. See demand charges explained. A power-factor adjustment that's correctly applied is best fixed at the equipment; see power factor basics.

How to check a bill in practice

Build a 12–24 month sheet. Record read dates, read type, kWh, actual kW, billing kW, rate code, supplier ¢/kWh and total. Look for changes that operations can't explain.
Pull the tariff sheet for your rate schedule from your utility's website or PUCO's tariff library, and read how demand, minimums and riders are calculated.
Compare interval data with billed demand. If the bill's peak doesn't appear anywhere in your 15- or 30-minute data, ask why.
Compare the supplier line with the contract. Check the price, the start date, any pass-through list, and whether a fixed term has ended.

Two quick checks (illustrative)

kWh tax. Ohio has no sales tax on electricity. Instead, the kWh excise tax steps down by monthly usage: $0.00465/kWh on the first 2,000 kWh, $0.00419 on 2,001–15,000, and $0.00363 above 15,000. For a 50,000 kWh month:

Block	kWh	Rate	Tax
First 2,000	2,000	$0.00465	$9.30
Next 13,000	13,000	$0.00419	$54.47
Remaining	35,000	$0.00363	$127.05
Total	50,000		$190.82

If all 50,000 kWh were taxed at $0.00465, the tax would be $232.50, an overcharge of $41.68 a month. Customers using more than 45 million kWh a year can register as self-assessing purchasers. They pay the state directly at lower rates and shouldn't see the tax on the utility bill.

Supplier price. If your contract says 8.95¢ and the supplier line shows 9.45¢ on 40,000 kWh, you've been overbilled 0.5¢ × 40,000 = $200 that month. Check whether the difference is a pass-through the contract actually allows before disputing it.

What Ohio's rules give you

Actual reads. Utilities must make reasonable attempts to get an actual reading of energy and demand every billing period (OAC 4901:1-10-05).
Meter tests. On request, the utility must test the meter within 30 business days and give you written results. The first test is free, and repeat tests can carry a tariff fee. If the meter is out of tolerance, the utility must fix it and credit the overpayment.
Limits on back-billing. If a meter problem caused undercharges, a utility can bill a nonresidential customer only for the 36 months before the fix. It must also let you pay in monthly installments over as many months as you were undercharged (OAC 4901:1-10-23).
Supplier response times. For small commercial customers (under 700,000 kWh a year), a supplier must give a status report within three business days of your complaint and keep reporting until it's resolved. It must also tell you how to reach PUCO (OAC 4901:1-21-08). Mercantile customers rely on their contract's dispute clause instead.

The dispute path

Write to the utility or supplier. Include the account number, the bill dates, the line you're disputing, your calculation, the supporting data and the remedy you want. Get a reference number. Keep paying the undisputed part so the account stays current.
File an informal complaint with PUCO. Call 1-800-686-7826 or use PUCO's online complaint form. PUCO staff contact the company and work toward a resolution.
File a formal complaint. Under R.C. 4905.26, any person or company can complain that a utility's rates, charges or practices are unjust, unreasonable or unlawful. If PUCO finds reasonable grounds, it sets a hearing. This is a legal proceeding, and larger disputes usually justify counsel.

Keep the evidence file together: bills, interval data, the tariff sheet, the contract and all correspondence. It's the same material a bill auditor or attorney would ask for.

Preventing repeat errors

Give each bill a 10-minute review: read type, kWh, kW, rate code, supplier price.
After any meter replacement, check the multiplier on the next two bills.
After a supplier switch, check the start date and price on the first bill.
Watch for HB 15 notices before a fixed price ends; they arrive 90–60 and 45–15 days out for small commercial accounts.
Re-check your rate schedule after any big load change.

FAQ

How do I dispute a commercial electric bill in Ohio?

Put the dispute in writing to the utility (for delivery, metering, rate schedule or tax issues) or the supplier (for supply price), with your calculation and evidence. If it isn't resolved, contact the PUCO call center at 1-800-686-7826 to open an informal complaint. A formal complaint is available after that.

Can the utility back-bill my business for past undercharges?

Yes, but for a metering inaccuracy it can go back only 36 months for nonresidential customers. It must also let you spread the payment over as many months as the undercharge covered.

What if my supplier charges more than my contract price?

Send the supplier the contract page and the bill line and ask for a corrected bill and a credit. Small commercial customers must receive a status report within three business days. If you don't get a resolution, contact PUCO.

Should there be sales tax on my Ohio electric bill?

No. Ohio doesn't apply sales tax to electricity. The tax line should be the kWh excise tax, which steps down at 2,000 and 15,000 kWh a month.