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MississippiMississippi interconnection applications
50 electric utilities serve Mississippi (EIA-861, 2025): 2 investor-owned utilitys, 25 electric cooperatives, 23 municipal utilitys. Together they serve 1,311,490 residential customers; 2,029 residential customers were on net metering at year-end 2025.
Largest utilities in Mississippi
Investor-owned utility · 384,493 residential customers · Mississippi
Applications: Own online portal – Entergy Interconnection Portal
Interconnection process and documents →Investor-owned utility · 158,206 residential customers · Mississippi
Applications: PowerClerk – Mississippi Power Interconnections PowerClerk (Levels 1-2)
Interconnection process and documents →Electric cooperative · 84,194 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 73,734 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 65,580 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 52,557 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 41,491 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 37,963 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 37,347 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 31,161 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 31,032 residential customers · Mississippi
Interconnection process and documents →Electric cooperative · 29,392 residential customers · Mississippi
Interconnection process and documents →Export compensation among the researched Mississippi utilities: Net billing. Rules differ by utility – see each utility page.
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.
Mississippi Public Service Commission
Interconnection ruleMiss. Admin. Code Title 39, Part IV, Subpart I - Mississippi Distributed Generator Interconnection Rule (MDGIR) – Mississippi Distributed Generator Interconnection Rule · source
Applies toElectric 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 formCommission-approved Standard Interconnection Application; for Level 1 the application and agreement are one combined document; Certificate of Completion in Commission-approved form
TimelinesCompleteness 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.
FeesLevel 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.
InsuranceInterconnection 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 disconnectLevel 2 and 3: lockable, visible-break isolation device accessible to the EU required. Level 1 interconnections do not require an external disconnect.
Export compensationNet 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.
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.
| Level | Up to | Criteria / review / fee |
|---|---|---|
| Level 1 | 20 kW | inverter-based, nameplate <=20 kW, certified equipment (IEEE 1547.1 / UL 1741); line section aggregate <=15% of peak; shared secondary <=20 kW · completeness 10 business days; screens and conditional approval 15 business days after complete · no application or other fee |
| Level 2 | 2000 kW | nameplate <=2 MW, certified equipment · completeness 10 business days; agreement within 5 business days of passing screens · up to $50 + $1/kW plus minor modification/additional review costs (engineering <=$100/h) |
| Level 3 | on customer request / not qualifying for Level 1-2; impact and facilities studies · completeness 10 business days · up to $100 + $2/kW plus actual study time (engineering <=$100/h) |
- MPSC - Mississippi Distributed Generator Interconnection Rule and Net Metering Rule (2015 text): https://www.psc.ms.gov/sites/default/files/Documents/Net%20Meeting%20and%20Interconnection%20Rules.pdf (retrieved 2026-11-13)
- MS SOS - proposed amended Mississippi Distributed Generation Rule (Title 39 Part IV Subpart II): https://www.sos.ms.gov/adminsearch/ACProposed/00028091b.pdf (retrieved 2026-11-13)
- MPSC news release 2022-10-04 - Updated Distributed Generation Rules: https://www.psc.ms.gov/sites/default/files/2022-10/RELEASE_BrentBaileyAnnouncesUpdatedDistributedGenerationRules.pdf (retrieved 2026-11-13)
All 50 utilities in Mississippi
- Entergy Mississippi384,493
- Mississippi Power158,206
- Coast Electric Power Association84,194
- Singing River Electric Cooperative73,398
- Southern Pine Electric Cooperative65,580
- Pearl River Valley El Power Association52,557
- 4-County Electric Power Association41,491
- Dixie Electric Power Association37,963
- Tombigbee Electric Power Association37,347
- Magnolia Electric Power Association31,161
- Central Electric Power Association31,032
- Northcentral Mississippi E P A29,392
- North East Mississippi EPA26,836
- Southwest Mississippi E P A23,095
- Tallahatchie Valley E P A21,509
- Delta Electric Power Association21,089
- Pontotoc Electric Power Association16,453
- Alcorn County Electric Power Association14,987
- City of Starkville12,799
- Natchez Trace Electric Power Association12,599
- Tishomingo County E P A10,997
- Prentiss County Electric Power Association10,994
- City of Tupelo10,646
- Tippah Electric Power Association10,534
- Monroe County Electric Power Association10,247
- East Mississippi Electric Power Association9,883
- Yazoo Valley Electric Power Association9,475
- City of Holly Springs9,398
- City of Columbus8,852
- City of Oxford8,620
- City of New Albany8,170
- Greenwood Utilities Comm7,273
- City of Okolona4,288
- City of West Point2,987
- City of Amory2,836
- City of Philadelphia2,669
- City of Aberdeen2,577
- Louisville Electric System2,447
- City of Water Valley1,523
- City of Macon893
- Twin County Electric Power Association0
- Coahoma Electric Power Association0
- Clarksdale Public Utilities0
- Public Serv Comm of Yazoo City0
- Canton Municipal Utilities0
- City of Kosciusko0
- City of Leland0
- City of Collins0
- City of Itta Bena0
- City of Durant0
Residential customers in Mississippi per EIA-861 (2025). Customer counts = bundled + delivery-only service (EIA-861 Part A + Part D). Service territory is reported by county; a county can be served by several utilities.
$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.