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Investor-owned utilityDuke Energy interconnection application
Duke Energy is an investor-owned utility serving 140,950 residential customers in Kentucky (EIA-861, 2025). Applications: PDF + email (Duke Energy Customer Owned Generation). 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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Process verified from Duke Energy’s official sources (see below). duke-energy.com blocked from our server; confirm whether Duke now uses an online portal.
Duke Energy at a glance
Duke Energy Kentucky (Duke Energy)
TypeInvestor-owned utility
EIA utility ID19446
Residential customers140,950 (EIA-861, 2025)
Net-metered residential customers1,026 (EIA-861, 2025)
Service territory6 counties in Kentucky
How to applyPDF + email – Duke Energy Customer Owned Generation · official link
Who submitsCustomer submits signed application (mail/email/fax); project contact and installers listed on form.
Export compensationNet billing – Rider NM-II
Dollar-denominated credit per exported kWh, effective Jan 1, 2025 (Case 2023-00413).
Level 1: approve/deny within 20 business days; Level 2: 30 business days. If witness test required: notify within 3 business days of completion, test within 10 business days.
Documents Duke Energy asks for
- Interconnection application formLevel 1 (<=30 kW inverter, UL 1741) or Level 2 Gridpol prepares this.
- Inverter spec sheetUL 1741 certification documentation
- Site plan / site layoutEnergy source, inverter, Duke meter Gridpol prepares this.
- Single-line diagram (one-line)All equipment meter to energy source incl. wire size, ratings, transformer connections Gridpol prepares this.
- Proof of insurance (when applicable)General liability insurance; proof on request
How the Duke Energy process runs
- Submit signed application with attachments.
- Approval in writing (may require inspection/witness test).
- Install; notify within 3 business days.
- Inspection/witness test within 10 business days.
- Operate after successful test; bidirectional meter.
Fees
| Fee | Applies to | Note |
|---|---|---|
| $0 | Level 1 and Level 2 | No application/review/study/inspection fees (Sheet 83) |
Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| Level 1 | 30 kW | inverter, UL 1741, screens |
| Level 2 | 45 kW | |
| Net metering cap | 45 kW |
NM-II max 45 kW.
Storage, EV and stamps
Battery storage
Application asks battery storage and power rating.
Sources
- Duke Energy Kentucky tariff Sheet 83 / Rider NM-II (KY PSC): https://psc.ky.gov/tariffs/Electric/Duke%20Energy%20Kentucky/Tariff.pdf (retrieved 2026-11-13)
Other utilities in Kentucky
- KU454,021
- LG&E388,146
- Kentucky Power130,322
- South Kentucky Rural E C C65,346
- Owen Electric Cooperative Inc.65,069
- Blue Grass Energy Cooperative Corporation61,870
- Warren Rural Electric Cooperative Corporation61,500
- Salt River Electric Cooperative Corporation54,002
- Jackson Energy Cooperative Corporation49,590
- Kenergy Corporation47,514
$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
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.