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Investor-owned utility

Duke Energy interconnection application

Duke Energy is an investor-owned utility serving 700,265 residential customers in Ohio (EIA-861, 2025). Gridpol files Duke Energy interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.

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Partly researched from official sources. Re-checked 2026-11-13: duke-energy.com 403, codes.ohio.gov refused connection, archive.org not reachable; no official Duke Energy Ohio interconnection page, form or Rider NM sheet could be read (search results only showed Duke Energy Kentucky material). Verify on first project: Duke Ohio submission portal/email, application fee, document checklist, Rider NM terms and steps; Ohio Level 1 timelines per OAC 4901:1-22.

Duke Energy at a glance

Utility

Duke Energy Ohio Inc (Duke Energy)

Type

Investor-owned utility

EIA utility ID

3542

Residential customers

700,265 (EIA-861, 2025)

Net-metered residential customers

6,193 (EIA-861, 2025)

Service territory

23 counties in Ohio

Who submits

Customer/installer; Duke Renewables Service Center (CustomerOwnedGeneration@duke-energy.com, 866-233-2290). Signed interconnection agreement required before net metering; CRES suppliers not required to offer net metering.

Export compensation

NEM – Rider NM (Ohio net metering)
Duke Ohio TIIR filing pending in PUCO Docket 26-873-EL-TIR.

Review time (official)

Per OAC 4901:1-22 (Ohio interconnection rules).

Documents Duke Energy asks for

  • Interconnection application formFilled in by us from your project data in the utility’s portal or on its form. Gridpol prepares this.
  • Single-line diagram (one-line)Drawn by us from your equipment data: modules, strings, inverter, battery, disconnects, point of interconnection, meter. Gridpol prepares this.
  • Site plan / site layoutDrawn by us from your roof sketch or photos: array, inverter, battery, disconnect, meter and main panel locations. Gridpol prepares this.
  • Inverter spec sheetUL 1741 / IEEE 1547
  • Interconnection agreementUtility agreement signed by the customer, usually after review.
  • Net metering / net billing agreementSigned by the customer where the utility requires a separate agreement.

How the Duke Energy process runs

  1. Submit interconnection application with drawings.
  2. Review per OAC 4901:1-22.
  3. Sign interconnection agreement.
  4. Install, inspection, meter, net metering.

Size levels and limits

LevelUp toNote
Level 125 kWOhio OAC 4901:1-22 simplified, inverter-based certified

Ohio net metering sizing per OAC 4901:1-10-28 (not above ~120% of requirements). Fees per Duke tariff (OAC 4901:1-22-05).

Sources

Ohio interconnection rule

Commission

Public Utilities Commission of Ohio (PUCO)

Interconnection rule

Ohio Adm.Code Chapter 4901:1-22 (Interconnection Services), rules 4901:1-22-01 to -10; R.C. 4928.11, 4928.67 – Interconnection Services · source

Applies to

Electric distribution utilities (EDUs: AEP Ohio, Duke Energy Ohio, AES Ohio, FirstEnergy's Ohio Edison/CEI/Toledo Edison), which must file uniform interconnection service tariffs (4901:1-22-02). Municipal utilities and cooperatives are not PUCO-regulated EDUs.

Application form

Uniform statewide approach: 'short form' application for DER <= 25 kW with IEEE 1547/UL 1741 certified equipment, standard application otherwise, filed with the EDU (4901:1-22-05); standard interconnection agreement per 4901:1-22-10.

Timelines

Receipt/completeness notice within 10 business days (4901:1-22-04); Level 1 review 15 BD, Level 2 20 BD after complete application; interconnection agreement within 5 BD of approval; interconnection within 10 BD after required upgrades complete. Pre-application report $300, within 10 BD.

Fees

Level 1 <= $50 (waivable); Level 2 <= $50 + $1/kW (+ $2,500 supplemental review deposit if elected); Level 3 <= $100 + $2/kW + actual study costs; pre-application report $300.

Insurance

EDU may not require liability insurance beyond proof of insurance or another financial instrument covering the applicant's responsibilities under the tariff, and may not require a particular agent/broker (4901:1-22-10(E)). No dollar amounts specified.

External disconnect

Required: DER must have a disconnect switch outside the equipment package, accessible to and lockable by EDU personnel, clearly labeled as DER disconnect, provided and paid for by the applicant (4901:1-22-05).

Export compensation

NEM – R.C. 4928.67; Ohio Adm.Code 4901:1-10-28 (eff. Apr. 8, 2024)
No fixed kW cap: system may not exceed 120% of customer's requirements (3-year average). Monthly excess credited at the energy component of the EDU's standard service offer, carried forward; no cash-out required. EDUs must offer standard and hospital net metering tariffs; CRES providers optional.

Not bound by the rule

Municipal electric systems and rural electric cooperatives are not EDUs under PUCO jurisdiction; they set their own interconnection and net metering policies.

Other utilities in Ohio

All Ohio utilities →

Gridpol Unlimited

$500 / month

Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.

  • Unlimited interconnection applications
  • Single-line diagram and site plan for every application
  • Pre-submission check against the utility’s requirements
  • Homeowner e-signature link for the authorization
  • Filing in your utility portal accounts or by the utility’s method
  • Utility questions, corrections and resubmissions
  • Follow-up through approval, inspection and PTO
  • Customer list, exports, API and webhooks
Get started

Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.

Get started – $500/month unlimited