Ohio Electricity Suppliers by Utility Territory: AEP Ohio vs Duke Energy vs FirstEnergy (2026)

Ohio deregulated its retail electricity market in 1999, but choosing a competitive electricity supplier requires knowing which utility delivers power to your address. Ohio has three major electric utility groups — AEP Ohio, Duke Energy Ohio, and FirstEnergy (which includes several subsidiary utilities) — each serving distinct geographic areas. This guide explains each territory, which competitive suppliers operate there, and how to find the best electricity plan in your area in 2026.

How Ohio’s Deregulated Electricity Market Works

Under Ohio’s Electric Choice program, residential and commercial customers can select a competitive retail electric supplier (CRES) to provide electricity supply, while their local utility continues to deliver that electricity through its distribution infrastructure. If you don’t choose a CRES, you receive supply from your utility’s standard offer service (SOS) — the rate that serves as the baseline for any comparison shopping you do.

The Public Utilities Commission of Ohio (PUCO) oversees the competitive electricity market, licenses CRES providers, and handles consumer complaints. PUCO’s “Apples to Apples” comparison tool at puco.ohio.gov/consumer/electricity lists licensed CRES providers by utility territory, making it the primary starting point for Ohio electricity shopping.

AEP Ohio Territory: Columbus and Central/Southeast Ohio

AEP Ohio (formerly Columbus Southern Power and Ohio Power) serves approximately 1.5 million customers across central and southeastern Ohio, including Columbus and its suburbs, Chillicothe, Zanesville, Athens, and a large rural area across the southeastern part of the state. AEP Ohio is one of the largest utilities in Ohio by customer count and serves the state capital.

The Columbus area is AEP Ohio’s most competitive zone — the market density supports more CRES providers and more competitive pricing than AEP’s rural southeastern territory. Major CRES providers serving AEP Ohio customers include Constellation Energy, NRG Energy, IGS Energy (an Ohio-based company headquartered in Dublin), Verde Energy, Spark Energy, and Public Power. IGS Energy is particularly active in the Ohio market and offers strong fixed-rate residential products for AEP Ohio customers.

AEP Ohio’s standard offer service (SOS) rate is set quarterly through a competitive procurement process overseen by PUCO. Before signing with any CRES, check AEP Ohio’s current SOS rate — CRES offers that don’t beat the SOS rate provide no value. The SOS rate is published on AEP Ohio’s website and on PUCO’s comparison tool.

Duke Energy Ohio Territory: Cincinnati and Southwest Ohio

Duke Energy Ohio serves approximately 840,000 customers in southwest Ohio, centered on greater Cincinnati and Hamilton County, with service extending into Clermont, Warren, Butler, and Montgomery (Dayton area) counties. Duke Energy Ohio is the primary utility for the Cincinnati metropolitan area.

Duke Energy Ohio’s territory has an active CRES market, particularly in the Cincinnati suburbs. Active suppliers include Constellation, IGS Energy, Verde Energy, Hamlin Energy, and several smaller regional providers. The Cincinnati market has historically had competitive CRES pricing — Duke’s SOS procurement process and PUCO oversight keep the market fair, and CRES providers compete actively for residential accounts.

One nuance for Duke Energy Ohio customers: Duke serves some customers in Ohio under its Ohio utility subsidiary while also serving portions of Indiana under a separate entity. If you’re near the state line, verify your service address is on the Duke Energy Ohio tariff (not Indiana) before shopping Ohio CRES providers.

FirstEnergy Ohio Subsidiaries: Cleveland, Akron, Toledo, and Northeast Ohio

FirstEnergy is the most complicated of Ohio’s utility groups because it operates through several subsidiary brands across northeastern and northwestern Ohio. The key FirstEnergy subsidiaries in Ohio are Ohio Edison (serving northeast Ohio including Akron, Youngstown, and Canton), The Illuminating Company (serving Cleveland and Lake County), and Toledo Edison (serving the Toledo metro area and northwest Ohio).

Despite operating under different names, all three FirstEnergy Ohio subsidiaries are regulated by PUCO and participate in the same Electric Choice program. CRES providers generally offer products across all three subsidiaries, though you may see them listed separately on PUCO’s comparison tool. Ohio Edison and The Illuminating Company serve the most densely populated area (Akron-Cleveland corridor) and have the widest CRES competition.

Major CRES providers serving FirstEnergy territories include Constellation, IGS Energy, Verde Energy, Direct Energy, Spark Energy, and Volunteer Energy. Cleveland and Akron are competitive markets — expect multiple CRES offers at or below FirstEnergy’s SOS rate during favorable market conditions.

Comparing CRES Rates to the Standard Offer Service

The single most important step in Ohio electricity shopping is benchmarking CRES offers against your utility’s current SOS rate. Ohio’s SOS rates are set through competitive procurement — they’re not artificially high or low, and CRES providers have to actually compete to offer savings. In years when wholesale electricity prices are low (as they generally have been outside of the 2022 energy crisis), CRES providers can consistently beat the SOS rate on 12–24 month fixed contracts.

The PUCO Apples to Apples tool shows current SOS rates for each Ohio utility alongside CRES offers, making direct comparison straightforward. Sort by price after selecting your utility territory and usage tier.

IGS Energy: Ohio’s Homegrown Supplier

IGS Energy deserves special mention as an Ohio-based CRES headquartered in Dublin, Ohio. IGS is one of the largest independent retail energy suppliers in the United States and is particularly well-regarded in the Ohio residential market. They offer fixed-rate products across all four Ohio utility territories and have a strong customer service reputation — a meaningful differentiator in a market where some national suppliers are known for poor retention practices. IGS is generally a safe choice for Ohio residents who want competitive pricing from a known, locally accountable company.

Green Energy in Ohio

Ohio’s Renewable Portfolio Standard (RPS) requires utilities to source a percentage of electricity from renewable sources, but choosing a CRES with a green energy product allows you to go further. Several CRES providers offer 100% renewable electricity backed by Renewable Energy Certificates (RECs) in all Ohio utility territories. Costs are typically 1–3 cents per kWh above standard rates. Ohio has significant wind resources in the northwestern part of the state, and several large solar projects have come online in recent years — in-state RECs are increasingly available.

FAQ

How do I find out which utility serves my address in Ohio?

Your electric bill identifies your utility. If you’re setting up new service, check the Ohio utility service maps or use PUCO’s Apples to Apples tool, which asks you to select your utility before displaying CRES offers. The general geography: AEP Ohio → Columbus/southeast; Duke Energy Ohio → Cincinnati/southwest; Ohio Edison → Akron/Youngstown; The Illuminating Company → Cleveland; Toledo Edison → Toledo/northwest.

Is the Ohio CRES market reliable? Any history of supplier failures?

Ohio’s market has generally been well-regulated. There have been isolated CRES company failures and enforcement actions, but PUCO requires financial assurance from licensed providers and protects customers if a CRES ceases operations — you automatically revert to SOS with no service interruption. Stick to established CRES providers with solid PUCO compliance records.

Can I switch CRES providers at any time?

You can switch at any time, subject to your current contract’s terms. Month-to-month CRES contracts typically allow 30 days’ notice with no penalty. Fixed-term contracts may have early termination fees — check your contract before switching.

What is Ohio’s Electric Security Plan (ESP) and how does it affect me?

FirstEnergy’s Ohio subsidiaries have operated under Electric Security Plans (ESPs) approved by PUCO that include certain rate structures. ESPs don’t prevent you from choosing a CRES — Electric Choice remains available regardless of your utility’s rate plan. The ESP affects distribution and other charges, not your right to choose a competitive supplier.

Does shopping for electricity in Ohio affect my credit?

Some CRES providers run credit checks before enrollment, particularly for new accounts without a utility payment history in the state. However, most standard residential enrollments do not require credit checks — ask before enrolling if this is a concern.

Bottom Line

Ohio’s three utility groups — AEP Ohio, Duke Energy Ohio, and FirstEnergy’s Ohio subsidiaries — each have active CRES markets with multiple competitive suppliers offering rates worth comparing against the standard offer. Start at PUCO’s Apples to Apples tool, identify your utility, benchmark the SOS rate, and compare fixed-rate CRES offers. IGS Energy is a strong local option in all Ohio territories; Constellation and Verde Energy are the most widely available national brands. Locking in a fixed rate during low-wholesale-price seasons provides the best value and predictability.