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4-County Electric Power Association interconnection application

4-County Electric Power Association is an electric cooperative serving 41,491 residential customers in Mississippi (EIA-861, 2025). Gridpol files 4-County Electric Power Association 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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Mississippi’s commission rule (Miss. Admin. Code Title 39, Part IV, Subpart I - Mississippi Distributed Generator Interconnection Rule (MDGIR)) does not bind electric cooperatives; 4-County Electric Power Association sets its own interconnection policy. We confirm its form on the first project. Municipal utilities and TVA-served distributors are not MPSC rate-regulated and follow their own/TVA programs. Applicability to non-IOU PSC-jurisdictional cooperatives not confirmed for the 2022 rule.

4-County Electric Power Association at a glance

Utility

4-County Electric Power Assn

Type

Electric cooperative

EIA utility ID

6641

Residential customers

41,491 (EIA-861, 2025)

Net-metered residential customers

none reported

Service territory

7 counties in Mississippi

Wholesale supplier / association

Tennessee Valley Authority (TVA) - local power company (distributor) network · TVA Dispersed Power Production (DPP) Guidelines + Dispersed Power Price Schedule CSPP (Attachment A)

Documents 4-County Electric Power Association 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.
  • PV module spec sheetManufacturer data sheet of the modules.
  • Inverter spec sheetManufacturer data sheet (string inverter, microinverter or hybrid inverter).
  • Customer signatureThe account holder signs the application or authorization. We send the signature link.
  • Recent electric billName, service address, account and meter number must match the application.
  • Final inspection sign-offApproved electrical inspection from the authority having jurisdiction after installation.

Typical documents for US utilities – not yet verified for 4-County Electric Power Association. We confirm 4-County Electric Power Association’s exact list on the first project.

Mississippi interconnection rule

Interconnection details from 2015 MDGIR text; net generation details from the 2022 proposed amendment filed with SOS - final adopted 2022 text not retrieved. Coop applicability unconfirmed.

Commission

Mississippi Public Service Commission

Interconnection rule

Miss. Admin. Code Title 39, Part IV, Subpart I - Mississippi Distributed Generator Interconnection Rule (MDGIR) – Mississippi Distributed Generator Interconnection Rule · source

Applies to

Electric Utilities (EUs) under MPSC jurisdiction (EU as defined in Miss. Code Ann. 77-3-3(d)(i)): Entergy Mississippi, Mississippi Power and PSC-jurisdictional electric utilities. MPSC described the 2022 amendments as applying to customers of investor-owned utilities.

Application form

Commission-approved Standard Interconnection Application; for Level 1 the application and agreement are one combined document; Certificate of Completion in Commission-approved form

Timelines

Completeness notice within 10 business days of receipt (customer has 10 business days to cure); Level 1 screens/conditional approval within 15 business days after completeness; Level 2 agreement within 5 business days after passing screens; resubmittals reviewed within 20 business days.

Fees

Level 1: none. Level 2: <=$50 + $1/kW. Level 3: <=$100 + $2/kW plus study costs; engineering capped at $100/h. Fees must be published on each EU's website. No other fees, equipment or insurance requirements unless authorized by the rules or Commission.

Insurance

Interconnection customer is not required to obtain general liability insurance as a precondition for interconnection approval (standard application/agreement insurance disclosure); EU may not require insurance unless authorized by the rules.

External disconnect

Level 2 and 3: lockable, visible-break isolation device accessible to the EU required. Level 1 interconnections do not require an external disconnect.

Export compensation

Net billing – Miss. Admin. Code Title 39, Part IV, Subpart II - Mississippi Distributed Generation Rule (net generation; amended 2022)
Residential: lesser of 110% of annual peak demand or 20 kW DC; non-residential: lesser of 110% or 2 MW (2022 text). Exports credited at Total Value of DG = avoided cost of wholesale power + 2.5 c/kWh DG value (+2 c/kWh low-to-moderate income adder), fixed 25 years; negative bill amounts carried forward; balance paid on account closure. Battery capacity does not count toward size limit.

Not bound by the rule

Municipal utilities and TVA-served distributors are not MPSC rate-regulated and follow their own/TVA programs. Applicability to non-IOU PSC-jurisdictional cooperatives not confirmed for the 2022 rule.

Other utilities in Mississippi

All Mississippi 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