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Investor-owned utility

AEP Texas (North Division) interconnection application

AEP Texas (North Division) is an investor-owned utility serving 158,488 residential customers in Texas (EIA-861, 2025). Applications: PowerClerk (AEP PowerClerk interconnection portal). Gridpol files AEP Texas (North Division) 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 AEP Texas (North Division)’s official sources (see below). Central and North are divisions of one company (AEP Texas Inc.) with a single tariff and the same DER process/portal; identical text used. Caution: the AEP Texas Quick Start Guide PDF mentions a 'Net Energy Metering Service (NEMS)' bill credit and a 35-day ISA approval - this conflicts with the AEP Texas solar page (REP decides buyback; 30-day PTO) and appears to be generic AEP text; the solar page/ERCOT structure is used here. Customer Information Packet PDF is image-only (not read). Contact der_aeptexas@aep.com, 361-881-5333.

AEP Texas (North Division) at a glance

Utility

AEP Texas North Company (American Electric Power (AEP Texas Inc.))

Type

Investor-owned utility

EIA utility ID

20404

Residential customers

158,488 (EIA-861, 2025)

Net-metered residential customers

none reported

Service territory

51 counties in Texas

How to apply

PowerClerk – AEP PowerClerk interconnection portal · official link

Who submits

Customer or customer's designated representative (installer) applies online after registering a PowerClerk account; application must be signed and fees paid before technical review. Authorized Release of Information list names project manager/electrical contractor/consultant.

Review time (official)

AEP Texas solar page: Interconnection Agreement and PTO 30 days or less after receipt of application; meter reprogramming 15 days or less after PTO; load profile update and surplus data to REP 30-60 days after reprogramming. 16 TAC §25.211(m): interconnection within 4 weeks of receipt of a completed application for pre-certified equipment, 6 weeks for other facilities (longer if substantial capital upgrades). §25.211(g)/(i): pre-interconnection studies max 4 weeks.

Documents AEP Texas (North Division) asks for

  • Interconnection application formApplication for Interconnection and Parallel Operation of DG (Tariff 6.3.2 form; ESI ID, kW/kVA, export yes/no, report excess to REP, pre-certification UL 1741/IEEE 1547.1) Gridpol prepares this.
  • Single-line diagram (one-line)One-line: all DER equipment (manufacturer, model, units), title block with customer name/address, labeled AC disconnect, existing DER labeled, nameplate kW/V/A/phase; block diagram acceptable if < 25 kW Gridpol prepares this.
  • Site plan / site layoutLayout sketch showing lockable, visible disconnect device Gridpol prepares this.
  • Other utility-specific document (when applicable)Copy of manufacturer's warranty (initial warranty no less than 5 years) per AEP Texas application form
  • Inverter spec sheetIEEE 1547-2018 (or equivalent) certified equipment required since Jan 1, 2024
  • Customer signatureSigned application and Interconnection Service Agreement (ISA)
  • Interconnection agreementInterconnection Service Agreement after technical analysis
  • Final inspection sign-off (when applicable)Proof of local inspections and testing depending on DER nature/size

How the AEP Texas (North Division) process runs

  1. Register in PowerClerk and submit interconnection application before installing (signed, fees paid).
  2. AEP Texas technical review/analysis; mitigations agreed; Interconnection Service Agreement (ISA) and cost estimate if upgrades needed.
  3. Customer signs ISA and pays for any interconnection equipment.
  4. Install system with lockable AC disconnect, local permits and inspections.
  5. Notify AEP Texas; post-installation field verification (meter, placards, disconnects, ingress/egress); proof of local inspection as applicable.
  6. Permission to Operate letter; meter reprogrammed to measure surplus.
  7. Surplus data sent to customer's REP; REP decides any buyback credit.

Fees

FeeApplies toNote
$00-10 kW pre-certified, not on network (exporting or non-exporting); and any pre-certified ≤500 kW meeting 15%/25% feeder screensAEP Texas tariff 6.1.2.4 Distributed Generation Charges (tariff dated eff. Nov 6, 2026 TC3; DG section eff. bills on/after Oct 1, 2024)
$305Exporting 0-10 kW not pre-certified, not on networkNon-exporting: $179
$557 / $1,061Exporting 0-10 kW on network (pre-certified / not)Non-exporting $305 / $557
$602-$2,338Exporting 10+ to 500 kW$602 pre-cert not network, $1,106 non-pre-cert, $1,267 pre-cert network, $2,338 non-pre-cert network (non-exporting $476-$1,267)
As calculatedDistributed Generation Meter Installation FeeWhen non-standard metering requested

Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.

Size levels and limits

LevelUp toNote
0-10 kW10 kWFee tier
10+ to 500 kW500 kWFee tier
500+ to 2000 kW / 2000+ kW10000 kWFee tier; §25.211 limit 10 MW

One-line block diagram allowed < 25 kW; PE stamp > 50 kW (AEP TIIR).

Storage, EV and stamps

Battery storage

Battery/energy storage operating in parallel must be reviewed and approved (same application). Backup-only ESS designed to operate only when disconnected from AEP grid does not need an ISA (TIIR). Non-export allowed via reverse power or minimum import protection (TIIR 4.15.2), still requires application. AEP does not support telemetry/schedule-based BESS charging. Single lockable visible-break isolation device for all DER. Make-before-break generators interconnected > 100 ms need approval.

EV chargers

Unidirectional (V1G) EVs operating solely as load are exempt from TIIR/ISA.

PE stamp

One-line diagram signed and stamped by a PE licensed in the state for installations larger than 50 kW (AEP DER TIIR v2.1). – PE-stamped drawings are not included in Gridpol.

Common issues the utility lists

  • Equipment not IEEE 1547-2018 certified (from Jan 1, 2024)
  • Installation not per TIIR technical specs can cause delays, disconnection and extra costs
  • Equipment changes after approval without an updated application

Gridpol’s pre-submission check covers these before we file.

Sources

Other utilities in Texas

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

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