Ohio Electric Bill: Supply vs Delivery Charges Explained
Open an Ohio electric bill and you will usually see two big buckets fighting for attention: supply (sometimes labeled generation or commodity) and delivery (transmission, distribution, and related riders). That split is not accounting fluff. It tells you which part of the bill you can shop and which part stays with your local wires company no matter whom you buy power from.
Understanding the difference matters whether you are renewing a competitive supply contract in Ohio or Maryland, comparing Retail Electric Provider plans in Texas, or living in a fully regulated state where one utility still sells you a bundled rate. The physics of the grid are the same everywhere. The shopping rules are not.
Why bills separate the electrons from the wires
Electricity does not appear at your outlet by magic. Power plants generate it, high-voltage lines move it long distances, and local distribution systems step the voltage down and deliver it on neighborhood poles and underground cables. The Federal Energy Regulatory Commission¹ describes transmission as the interstate highway of the grid and distribution as the local streets that finish the trip to homes and businesses.
In restructured markets, regulators unbundled those functions so customers could choose a competitive supplier for the energy commodity while the incumbent utility kept the regulated delivery monopoly. The U.S. Department of Energy calls a rate bundled when one provider sells both supply and delivery, and unbundled when different providers handle kWh and wires—sometimes on one consolidated bill, sometimes on two (DOE FEMP rate guide²).
Ohio sits deep in the unbundled camp. According to the EIA’s 2024 Ohio electricity profile³, energy-only provider sales reached about 115.5 million megawatthours—more than full-service provider sales of roughly 38.2 million—putting Ohio first nationally for energy-only sales volume. That is a statistical way of saying: a huge share of Ohio power is already sold separately from delivery.
What supply charges actually pay for
Supply is the price of the electricity itself—the generation or wholesale energy that keeps lights, HVAC, and equipment running. Consumer Reports puts it plainly: multiply the kilowatt-hours you used by the supply rate, and that is the commodity portion of the bill (Consumer Reports bill explainer⁴).
Those cents per kWh move with fuel markets, regional demand, and capacity needs. EIA notes that retail prices reflect the cost to produce and deliver power, allowed returns for regulated utilities, and profits for unregulated suppliers (EIA Today in Energy, Nov. 2021⁵). When natural gas or other fuels spike, supply rates are usually the first place the shock shows up.
On Ohio utility bills, generation often appears as a separate block from delivery. A U.S. Department of Energy guide written for Ohio businesses⁶ walking through a Duke Energy Ohio statement explains that generation charges cover energy and, for larger accounts, peak demand, while customers who stay with the utility’s default generation product may also see auction-related riders for capacity and energy. Switch to a competitive supplier and those utility generation line items typically give way to the supplier’s own energy charge—often still collected on the utility’s bill.
For households, that means the shopping decision is almost entirely about the supply rate and contract terms. You are not choosing a different set of poles. You are choosing who buys or hedges the power that rides those poles.
What delivery charges cover
Delivery pays for the grid that gets power to your meter: transmission towers and wires, substations and transformers, local distribution circuits, meters, outage response, and customer service. EIA reports that major U.S. utilities have been spending more on delivery and less on power production over the past decade. In inflation-adjusted 2020 dollars, delivery spending rose from 2.6 cents per kWh in 2010 to 4.3 cents per kWh in 2020—a 65% increase—while production spending fell from 6.8 to 4.6 cents per kWh (EIA⁵). Aging equipment replacement, transmission for new wind and solar, and smart-meter deployments all show up in that delivery bucket.
FERC regulates most interstate transmission rates; states regulate local distribution and retail delivery charges. As FERC notes, retail customers may not always see a clean “transmission” line item—those costs can be embedded in broader delivery or energy charges (FERC formula-rate explainer¹). On many Ohio bills you will still see a fixed distribution customer charge plus usage- or demand-based delivery charges and PUCO-approved riders (Ohio utility bill guide⁶).
Consumer Reports emphasizes that delivery is generally less volatile than supply but has been climbing as utilities recover storm repairs, wildfire hardening, and other infrastructure work (CR⁴). Fixed customer charges matter here too: they do not shrink when you use less electricity, so efficiency gains hit the volumetric parts of the bill harder than the flat fees.
Texas makes the same split with different labels. Regardless of which Retail Electric Provider you pick, the Transmission and Distribution Utility still delivers power, reads meters, and restores outages—and the Public Utility Commission of Texas continues to regulate that delivery function (Power to Choose FAQ⁷).
Ohio choice, Texas choice, and regulated markets
Retail choice—also called customer choice—lets eligible customers buy generation from a competitive marketer while the local distribution utility delivers it and bills for wires service. The EIA FAQ on supplier choice⁸ stresses that point: the alternate supplier markets the electricity; the distribution utility still delivers it to the meter and charges for that service. Choice is typically strongest for customers of investor-owned utilities; many municipal and cooperative territories remain bundled.
Ohio and Maryland both show substantial energy-only volumes in EIA state profiles—Maryland’s 2024 energy-only sales were about 27.1 million MWh versus 32.0 million MWh of full-service sales (Maryland profile⁹). Ohio’s imbalance is even more extreme, which is why Ohio bills so often look “unbundled” even for residential customers.
Texas goes further in competitive areas: customers choose a Retail Electric Provider for the commodity, while the TDU handles poles and wires. Power to Choose’s official FAQ is blunt about reliability: switching suppliers does not change who maintains the wires or who you call for an outage—you call the TDU (Power to Choose⁷).
In fully regulated states without retail choice, you still pay for generation and delivery; they just arrive as one utility rate. The economic distinction remains useful. If bills are rising because of delivery infrastructure, shopping a supplier will not help. If generation is the problem, a competitive offer—or a utility time-of-use option where available—might.
How to read the line items and find your real rate
Start with usage in kWh. Then separate three questions: What did supply cost? What did delivery cost? What else (taxes, riders, late fees, deposits) was added?
DOE’s federal rate guidance groups most bills into energy charges (per kWh), demand charges (per kW peak, common for businesses), and fixed charges (DOE²). Residential Ohio bills lean on energy plus fixed customer charges; commercial bills often add demand. The Ohio business guide’s speedometer-versus-odometer analogy still helps: kWh is how far you drove; kW demand is how hard you pushed the accelerator (Ohio bill guide⁶).
To compare offers, ignore a bare “7¢ supply” headline until you know what else is attached. Texas’s Power to Choose shopping checklist asks whether the quoted price at a 1,000 kWh usage level includes electricity, transmission and distribution charges, monthly customer charges, and other recurring fees (Questions to Ask¹⁰). That all-in habit travels well to Ohio and Maryland: compare the estimated total bill at your actual usage, not just the generation rate.
Ohio’s statewide average residential price was 15.99 cents per kWh in 2024 across the total electric industry, compared with an all-sector average of 11.29 cents (EIA Table 4¹¹; Ohio profile³). EIA notes that retail prices are usually highest for residential and commercial customers because it costs more to distribute electricity to them, while industrial customers often take power at higher voltages closer to wholesale cost (EIA prices and factors¹²). Your personal all-in rate will differ by utility territory, supply product, and usage shape.
Shopping traps that blur supply and delivery
Competitive markets create real options and real pitfalls. Consumer Reports warns that many alternative suppliers advertise steep introductory discounts that expire, then leave customers on higher rates—sometimes with early-cancellation fees (CR⁴). The Federal Trade Commission has long argued that retail electricity competition works best when consumers get clear, comparable disclosures of price, contract terms, and product attributes—and when deceptive practices are policed (FTC staff report¹³).
Plan design matters as much as the teaser number. On Power to Choose’s plan guide, fixed-rate products hold the energy price steady for the term except for TDU fee changes and certain government-imposed fees; variable and indexed plans can move monthly with markets or published indexes; prepaid plans shift payment timing and often price higher (Plan Options¹⁴). Minimum-usage fees can punish low-consumption months even when your headline rate looks cheap (FAQ⁷).
Contract endgames deserve a calendar reminder. Many term plans default to a higher month-to-month variable rate if you do not renew or switch before expiration (Plan Options¹⁴). That is a supply problem dressed up as a bill surprise—and it has nothing to do with your delivery rates.
What you can change—and what you cannot
You can usually change your supply product if you live in a choice territory: fixed versus variable, term length, renewable content, and whether you stay on the utility’s standard offer. You generally cannot change your delivery utility by shopping alone. In Texas competitive areas, outages still go to the TDU (Power to Choose FAQ⁷); in Ohio, the distribution utility still owns the local wires even when an alternative supplier sells generation (Ohio bill guide⁶).
You can change usage. DOE’s Energy Saver guidance notes that sealing uncontrolled air leaks can cut heating and cooling costs by roughly 10%–20%, and that dialing a thermostat down (or up in cooling season) by 7°–10°F for eight hours a day can save as much as 10% a year on heating and cooling (Energy Saver guide¹⁵). Those savings hit volumetric supply and delivery charges; they do not erase fixed customer charges.
Businesses should watch demand. A short spike can set billing demand for the month—and, with ratchets, for months afterward (DOE rate options²; Ohio bill guide⁶). That is a delivery-capacity problem supply shopping will not fix.
A practical decision checklist
- Pull two or three recent bills. Circle supply/generation, delivery/distribution/transmission, fixed customer charges, riders, and taxes.
- Calculate your recent all-in cents per kWh (total electric charges ÷ kWh). Use that—not a marketing teaser—as your baseline.
- If you are in a choice market, compare offers at your actual usage. Ask whether quoted prices include delivery and recurring fees, how fixed or variable the rate is, what happens at renewal, and what early-exit penalties apply (Power to Choose questions¹⁰).
- Treat introductory rates as temporary. Read the post-promo price and cancellation terms before you sign (CR⁴).
- If delivery is rising and supply is already competitive, shift effort to efficiency, thermostat strategy, and—for businesses—demand management (Energy Saver¹⁵; DOE²).
- Keep the outage number for your wires company handy. Supplier switches do not rewire the neighborhood (Power to Choose FAQ⁷).
Supply is the shoppable commodity. Delivery is the regulated path that commodity travels. Once you can tell them apart on an Ohio—or Texas, Maryland, or regulated-state—bill, every rate offer, rider, and efficiency project gets easier to judge on its merits.