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Electric cooperativePEC interconnection application
PEC is an electric cooperative serving 420,753 residential customers in Texas (EIA-861, 2025). Applications: PowerClerk (PEC Interconnection PowerClerk). Gridpol files PEC 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 PEC’s official sources (see below).
PEC at a glance
Pedernales Electric Coop, Inc
TypeElectric cooperative
EIA utility ID14626
Residential customers420,753 (EIA-861, 2025)
Net-metered residential customers13,584 (EIA-861, 2025)
Service territory24 counties in Texas
How to applyPowerClerk – PEC Interconnection PowerClerk · official link
Who submitsInstaller or member may create the PowerClerk application, but the PEC member must personally sign the Interconnection Agreement and Member Acknowledgement Form via DocuSign (valid member e-mail required); installers may not sign on the member's behalf. PEC is in ERCOT but, as a coop, handles its own interconnection.
Export compensationNet billing – Sustainable Power Credit (default <50 kW AC) / Interconnection TOU Base Power Credit (optional, 12-month commitment)
Per PEC Tariff and Business Rules
Final inspection site visit within 10-15 business days after request.
Documents PEC asks for
- Interconnection application formPowerClerk application; valid PEC meter and account number Gridpol prepares this.
- Interconnection agreementPEC Agreement for Interconnection of Parallel DG, signed by member via DocuSign (uploaded copies not accepted)
- Customer signatureMember Acknowledgement Form via DocuSign
- Single-line diagram (one-line)One-line of all equipment incl. PV, inverter, batteries, visible-lockable AC disconnect, meter Gridpol prepares this.
- Final inspection sign-offAll required city permitting and inspections before requesting final inspection
How the PEC process runs
- Submit application in PowerClerk with one-line
- Member signs IA + Acknowledgement via DocuSign; fee posted to member bill
- PEC Energy Services Advisor reviews; corrections returned to installer, or approval-to-install e-mail
- Install; complete city permits/inspections
- Request final inspection in PowerClerk (Confirm Installation / Request for Site Inspection)
- PEC inspection (10-15 business days); failures listed by e-mail, re-inspection via PowerClerk
- PTO notice e-mailed via PowerClerk; rate assigned
Fees
| Fee | Applies to | Note |
|---|---|---|
| $500 | Tier I <50 kW AC | Non-refundable, posted to member bill after signed agreement; plus upgrade costs |
| $700 | Tier II >=50 kW AC | Plus engineering study coordination and upgrades |
| $2,500 | Tier III 1-10 MW | |
| $250 | Expansion, total <50 kW AC | |
| $100 | Failed inspection re-visit | May be charged |
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 |
|---|---|---|
| Tier I | 50 kW | <50 kW AC aggregate nameplate |
| Tier II | 1000 kW | |
| Tier III | 10000 kW |
Sizing by aggregate inverter AC nameplate
Storage, EV and stamps
Battery storage
Battery inverters count toward Total DG kW AC output; batteries must be on one-line. Energy management equipment not counted in sizing.
Common issues the utility lists
- IA/Acknowledgement uploaded or signed by installer instead of member via DocuSign
- Installed equipment not identical to approved one-line
- Missing visible, lockable, labeled, fused disconnect within 10 ft of POI (or dedicated PV breaker) / not in line of sight of meter without placard
- Meter or disconnect not accessible
- Improper wiring/conduit, non-sunlight-resistant exposed wiring, wrong conductor colors, inaccessible junction boxes
Gridpol’s pre-submission check covers these before we file.
Sources
- PEC – Interconnection Process: https://mypec.com/?p=6470 (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.