AES Ohio (Dayton Power & Light) Rate Selection Guide
AES Ohio, formerly Dayton Power & Light, is an investor-owned electric utility serving about 540,000 customers across West Central Ohio. It offers the MyAES portal with 24 months of billing history, 15-minute Green Button interval data from its AMI rollout, EDI for suppliers, and the CRES Business Partner Portal in Ohio's deregulated generation market.
AES Ohio (Dayton Power & Light) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Secondary (D19) | Commercial | ~7.4 cents/kWh small-business energy; demand charge above ~10 kW | Offices, retail, restaurants, small/medium commercial |
| Primary (D20) | Industrial | Customer + per-kW demand + per-kWh; TOU above ~200 kW (see tariff) | Larger C&I taking primary-voltage service |
| Primary-Substation / High Voltage (D21/D22) | Industrial | Customer + per-kW demand + per-kWh, TOU & power factor (see tariff) | Large industrial loads at substation/high voltage |
Market Overview
AES Ohio owns the poles, wires, transformers, and meters and bills the delivery side every month. Generation is competitive: customers can take the auction-set Standard Service Offer or shop a CRES provider, including via governmental aggregation.
Need to pull your actual usage data to compare rates? See the AES Ohio (Dayton Power & Light) Data Access Guide →
Community Choice Aggregation (CCA) Options
Opt-out and opt-in municipal/county aggregation programs that bundle AES Ohio customers to purchase competitive generation supply.
Current Rate Schedules
AES Ohio bills regulated distribution under its PUCO-approved electric distribution tariffs (effective dates through June 1, 2026). Commercial and industrial customers are served on Secondary (D19), Primary (D20), Primary-Substation (D21), and High Voltage (D22) schedules, which combine a monthly customer charge, per-kW demand charges for larger loads, and per-kWh distribution charges, plus riders. Generation supply is separate and competitive: the SSO Price to Compare was about $0.0945/kWh for June 2025-May 2026. Per published guidance, small business energy pricing is roughly 7.4 cents/kWh, demand charges apply above ~10 kW, and time-of-use is mandatory above ~200 kW. Exact $/kW and $/kWh distribution figures vary by rate sheet and effective date; consult the D02 Tariff Index and individual rate sheets.
Effective: June 1, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Secondary Service (D19) | commercial | Commercial customers taking service at secondary voltage. Small businesses (under ~10 kW) are energy-only; demand charges apply above ~10 kW. | Monthly customer charge plus per-kWh distribution charge; per-kW demand charge applies for larger secondary loads, billed on the highest 15-minute demand. Generation supply separate (SSO or CRES). Exact charges in the D19 rate sheet. | — |
| Primary Service (D20) | industrial | Larger commercial/industrial customers taking service at primary voltage; time-of-use typically applies above ~200 kW. | Monthly customer charge, per-kW demand charge, and per-kWh distribution charge, often with time-of-use pricing and possible power-factor adjustment. Generation supply separate. Exact charges in the D20 rate sheet. | — |
| Primary-Substation Service (D21) | industrial | Large industrial customers served at substation primary voltage. | Customer charge, per-kW demand charge, and per-kWh distribution charge with time-of-use and power-factor provisions for large loads. Generation supply separate. Exact charges in the D21 rate sheet. | — |
| High Voltage Service (D22) | industrial | Very large industrial customers served at high (transmission-level) voltage. | Customer charge, per-kW demand charge, and per-kWh distribution charge tailored to high-voltage loads. Generation supply separate. Exact charges in the D22 rate sheet. | — |
| Public EV Charging Station (D24) | ev | Commercial public EV charging station operators. | Dedicated EV charging rate schedule; charges defined in the D24 rate sheet. | — |
Rate Recommendations by Use Case
Small business / storefront (under ~10 kW)
Office, retail, cafe, or salon on Secondary (D19) service with energy-only billing.
Below the ~10 kW demand threshold, billing is a fixed customer charge plus per-kWh distribution (~7.4 cents/kWh energy), so the main lever is comparing competitive supply against the SSO.
- Download Green Button data to benchmark usage
- Compare CRES offers against the SSO Price to Compare (~$0.0945/kWh)
- Enroll in paperless billing and usage alerts
Mid-size commercial (10-200 kW)
Restaurant, light manufacturing, mid-size retail, or fitness center on Secondary/Primary service with demand charges.
Demand charges enter above ~10 kW, billed on the single highest 15-minute spike, so peak management is the biggest lever.
- Audit your 15-minute interval data for one-time peaks
- Flatten equipment surges to cut demand charges
- Shop competitive supply
Large industrial (above ~200 kW)
Manufacturing, cold storage, or large hospitality on Primary/Primary-Substation/High Voltage service with mandatory TOU.
Mandatory time-of-use and per-kW demand charges dominate; custom competitive supply contracts and load shifting yield the largest savings.
- Shift heavy loads to off-peak windows
- Negotiate a custom CRES supply contract using usage history
- Watch power-factor provisions
Historical Rate Trends
AES Ohio distribution rates are set through PUCO proceedings, including a distribution rate case filed November 2024. Riders update periodically (several effective June 1, 2026). Generation supply (SSO) is reset through competitive auctions.
September 1, 2024
AES Ohio completed migration to a new modern CIS/billing system, changing account numbers from 10 to 12 digits.
n/aNovember 29, 2024
AES Ohio filed a base distribution rate case with PUCO to revise distribution service rates.
n/aJune 1, 2026
Updated distribution rate sheets and riders took effect (Secondary D19, Primary D20, TCRR, Storm, Customer Programs riders).
n/aOverall trend: Distribution rates trending upward with infrastructure investment and reliability programs; generation SSO varies with auction outcomes.
Next expected change: Ongoing distribution rate case outcomes and periodic rider updates; next SSO Price to Compare reset after the June 2025-May 2026 period.
Cost Optimization Strategies
For AES Ohio C&I customers, the biggest levers are managing peak demand (per-kW charges and TOU periods on the distribution bill) and shopping competitive generation supply against the SSO.
Demand-charge management
For: Secondary (D19), Primary (D20), and larger classes
Use 15-minute AMI interval data to find and flatten peaks. A single equipment surge sets the monthly demand charge, so staggering startups and shifting loads off-peak reduces billed demand.
Shop competitive generation supply
For: All C&I classes
Compare CRES provider offers against the SSO Price to Compare (~$0.0945/kWh Jun 2025-May 2026). Large loads typically obtain custom quotes using usage history.
Time-of-use load shifting
For: Primary (D20) and above (>~200 kW)
For customers above ~200 kW on mandatory TOU, shift heavy equipment to off-peak (nights/weekends) to cut the energy-charge portion of the distribution bill.
To implement these strategies, you need your 15-minute interval data. Learn how to download AES Ohio (Dayton Power & Light) interval data →
Deregulated Market Shopping
Ohio has retail electric choice via Energy Choice Ohio. AES Ohio delivers and bills distribution; C&I customers buy generation from a CRES provider or take the Standard Service Offer (SSO).
How to Compare AES Ohio (Dayton Power & Light) Suppliers
- 01Pull recent usage (Green Button or BPP via your supplier)
- 02Compare CRES offers on energychoice.ohio.gov against the SSO Price to Compare
- 03Consider governmental aggregation if your community offers it
- 04Sign a supply contract; AES Ohio continues to deliver and bill distribution
Contract Terms for AES Ohio (Dayton Power & Light) Supply Agreements
- Fixed vs. variable price
- Contract length
- Early termination fees
- Renewable content / RECs
- Custom pricing for large C&I (usage history required)
Common Pitfalls When Shopping AES Ohio (Dayton Power & Light) Rates
- Variable-rate teaser pricing
- Auto-renewal and cancellation fees
- Comparing supply price against the correct SSO Price to Compare
- Generation price is separate from regulated distribution charges and riders
Frequently Asked Questions
How does a C&I customer get 15-minute interval data from AES Ohio?▾
If the service point has an AMI smart meter, the customer signs into the AES Ohio Green Button portal with MyAES credentials and uses Download My Data to export up to 24 months of 15-minute interval data in XML or CSV. Connect My Data can grant a third party time-limited access.
How does a supplier or consultant access our usage data?▾
A PUCO-certified CRES Provider registered with AES Ohio uses the Business Partner Portal. With a signed customer Letter of Authorization (LOA), they can request up to 24 months of historical usage and interval data by account number/SDI, downloaded as XML or CSV.
Is electricity generation deregulated for AES Ohio business customers?▾
Yes. Ohio has retail electric choice (Energy Choice Ohio). AES Ohio delivers power and bills delivery regardless of supplier; C&I customers can buy generation from a CRES provider or take the Standard Service Offer (SSO), whose Price to Compare was about $0.0945/kWh for June 2025-May 2026.
What commercial and industrial distribution rate schedules does AES Ohio offer?▾
AES Ohio's distribution tariffs include Secondary (D19), Primary (D20), Primary-Substation (D21), and High Voltage (D22) service, plus Public EV Charging Station (D24). Larger classes are demand-metered; specific charges are in the D02 Tariff Index and the individual rate sheets.
Does AES Ohio support EDI for competitive suppliers?▾
Yes. AES Ohio supports ANSI X12 EDI (814, 810, 867, 820 with 997/999 acknowledgements) under Bill Ready, Rate Ready, and Dual Billing, with seasonal certification flights. Certified CRES providers register as an AGS and complete EDI testing before going live.
Automate AES Ohio (Dayton Power & Light) Rate Analysis with Nectar
Nectar continuously monitors your AES Ohio (Dayton Power & Light) rate options and alerts you when a better schedule is available. Save 10-30% on energy costs.
Nectar for Energy & Sustainability Teams
Managing utility costs for commercial or industrial buildings? Nectar offers a free rate analysis — we'll review your current rate schedules and identify where switching tariffs or shifting load can save 10-30%.
Get a Free Rate AnalysisNectar for Energy Brokers & Consultants
Advising clients on rate optimization? Nectar works with energy consultants who need reliable interval data and automated rate comparison tools.
Partner with Us