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Investor-owned utilitySWEPCO interconnection application
SWEPCO is an investor-owned utility serving 473,880 residential customers in Arkansas, Louisiana, Texas (EIA-861, 2025). Applications: PowerClerk (AEP PowerClerk (DER interconnection application; register account first)). Gridpol files SWEPCO 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 SWEPCO’s official sources (see below). Portal (AEP PowerClerk), steps and core documents confirmed from SWEPCO page and state tariffs. Minor gaps: exact PowerClerk upload checklist not visible without login; LA/TX review timelines not stated in documents read; AEP DER technical requirements (AEP.com/DERRequirements) not read; installer LOA not documented.
SWEPCO at a glance
Southwestern Electric Power Co (American Electric Power)
TypeInvestor-owned utility
EIA utility ID17698
Residential customers473,880 (EIA-861, 2025)
Net-metered residential customers2,934 (EIA-861, 2025)
Service territory14 counties in Arkansas, 11 counties in Louisiana, 25 counties in Texas
How to applyPowerClerk – AEP PowerClerk (DER interconnection application; register account first) · official link
Who submitsCustomer who owns the DER applies via PowerClerk (account registration required); SWEPCO advises using a licensed electrician. Tariff agreements are signed by customer and owner/third-party owner if different (AR) and list the installer. No installer LOA form found on SWEPCO pages. Texas SWEPCO is in SPP (non-ERCOT), so SWEPCO handles interconnection directly. Contact: Distributed Generation Coordinator dgcoordinator@aep.com.
Export compensationNet billing – AR: Non-Legacy Net-Metering (Schedule 58) / Legacy Net-Metering (Schedule 57); LA: Distributed Generation Rider (sheet 33); TX: Metering and Billing for Distributed Renewable Generation (IV-63)
AR NLN-M: outflow credited in dollars at avoided cost (SPP LMP average), $0.03656/kWh Mar 2026-Feb 2027, surplus carried forward. LA: outflow credited at avoided cost $0.03656/kWh (Apr 2026-Mar 2027 cycles), credit carried over; old Net Metering Rider closed. TX: outflow credited at avoided cost of second preceding month (16 TAC 25.242).
Arkansas: written results of preliminary site review and of Standard Interconnection Agreement review within 30 calendar days (SWEPCO Schedule 58 forms); agreement due at least 30 days before interconnection. LA/TX: not stated in documents read.
Documents SWEPCO asks for
- Interconnection application formSigned online interconnection application in PowerClerk (AR tariff: Preliminary Interconnection Site Review Request form content; LA: Interconnection Application; TX: DG interconnection application in Rider IV-51) Gridpol prepares this.
- Single-line diagram (one-line)One-line / detailed electrical diagram (required by AR NLN-M, LA DG Rider cond. 2, TX Rider IV-51 application) Gridpol prepares this.
- Site plan / site layout (when applicable)Texas application asks for layout sketch Gridpol prepares this.
- Inverter spec sheetInverter manufacturer/model/rating on agreement; equipment IEEE 1547-2018 certified from 1/1/2024; TX: non-pre-certified (UL 1741/IEEE 1547.1) systems must give dynamic modeling values
- Interconnection agreementSigned Interconnection Service Agreement (ISA) / state Standard Interconnection Agreement (AR: due at least 30 days before interconnection)
- Final inspection sign-offProof of local inspections and testing before energizing (inspector signature or final inspection certificate on AR/LA agreements); LA: proof of qualified installation, licensed electrician certification acceptable
- Other utility-specific document (when applicable)Third-party test results for larger DER; visible lockable disconnect; AR: meter aggregation application/affidavit if aggregating
How the SWEPCO process runs
- Register in AEP PowerClerk; submit signed online application with required information and fees.
- SWEPCO technical review / analysis; mitigations agreed.
- SWEPCO issues Interconnection Service Agreement (ISA) and cost estimate if needed.
- Sign ISA, pay for interconnection equipment; construct (if project unchanged).
- Installation, upgrades/meter update, local inspection, testing and commissioning; all payments made.
- SWEPCO issues Permission to Operate (PTO) letter; notify SWEPCO before later major changes.
Fees
| Fee | Applies to | Note |
|---|---|---|
| $175 | Arkansas Non-Legacy Net Metering (Schedule 58) | One-time admin/interconnection review fee per Preliminary Interconnection Site Review Request (or per site-screening request); interconnection improvements billed via CIAC |
| $175 | Louisiana Distributed Generation Rider | One-time DG Application/Interconnection Agreement fee; plus actual-cost charges for extra meters, studies, inspection/testing |
| $0-$3,357 | Texas Pre-Interconnection Study Fee (Rider IV-51) | By size (0-10, 10-500, 500-2000, >2000 kW), export/non-export, pre-certified, network; e.g. 0-10 kW pre-certified not on network: $0 non-export / $75 export. No study fee for pre-certified units <=500 kW meeting 15% feeder screens |
| $9.42/month | Texas Metering and Billing for Distributed Renewable Generation (IV-63) | Account administration fee added to customer charge |
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 |
|---|---|---|
| LA DG Rider - residential | 25 kW | Nameplate <=25 kW; sized to <=100% of expected consumption |
| LA DG Rider - commercial | 300 kW | >300 kW only if LPSC finds public interest |
| TX Distributed Renewable Generation (IV-63) | 2000 kW | Lesser of 2 MW or estimated monthly maximum demand |
| TX pre-interconnection study fee tier | 10 kW | Lowest fee tier 0-10 kW |
Arkansas net-metering size limits per Ark. Code Ann. 23-18-603 / APSC Net-Metering Rules (not restated in SWEPCO schedule read).
Storage, EV and stamps
Battery storage
SWEPCO page: energy storage systems follow the same interconnection process; battery storage may join an aggregation program only with a valid ISA. AR agreement lists 'Energy Storage Device' as system type; LA agreement asks 'Battery Backup Installed: Yes/No'. Texas study fees distinguish exporting vs non-exporting systems.
Common issues the utility lists
- AR: items violating safety standards and/or power generation limits are explained with required modifications (Schedule 58 review terms)
- LA: facility sized above 100% of expected consumption -> LPSC notified and facility disconnected (DG Rider cond. 8)
Gridpol’s pre-submission check covers these before we file.
Sources
- SWEPCO - Generating Equipment / Interconnection: https://www.swepco.com/builders/GeneratingEquipment.aspx (retrieved 2026-11-13)
- AEP PowerClerk - interconnection application login: https://aep.powerclerk.com/MvcAccount/Login (retrieved 2026-11-13)
- SWEPCO Arkansas rate book (Schedules 57/58 Net-Metering): https://www.swepco.com/lib/docs/ratesandtariffs/Arkansas/Arkansas_Rae_Book_08-11-26.pdf (retrieved 2026-11-13)
- SWEPCO Louisiana tariff book (Distributed Generation Rider, sheet 33): https://www.swepco.com/lib/docs/ratesandtariffs/Louisiana/LA_Tariff_Book_as_of_10-28-26.pdf (retrieved 2026-11-13)
- SWEPCO Texas Tariff Manual - Rates, Charges and Fees (IV-51, IV-63): https://www.swepco.com/lib/docs/ratesandtariffs/Texas/TexasRatesChargesandFees_08-01-26.pdf (retrieved 2026-11-13)
$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.