Missouri interconnection applications
132 electric utilities serve Missouri (EIA-861, 2025): 5 investor-owned utilitys, 84 municipal utilitys, 42 electric cooperatives, 1 federal power agency. Together they serve 2,750,253 residential customers; 33,251 residential customers were on net metering at year-end 2025.
Largest utilities in Missouri
Investor-owned utility · 1,100,654 residential customers · Missouri
Applications: PowerClerk – Ameren Missouri PowerClerk (all applications online; paper applications on developer resources page)
Interconnection process and documents →Investor-owned utility · 308,573 residential customers · Missouri
Applications: Own online portal – Evergy DER application portal (<200 kW AC); >200 kW AC: evergydistributedic.customerapplication.com
Interconnection process and documents →Investor-owned utility · 523,588 residential customers · Missouri
Applications: Own online portal – Evergy DER application portal (<200 kW AC); >200 kW AC: evergydistributedic.customerapplication.com
Interconnection process and documents →Investor-owned utility · 161,373 residential customers · Missouri
Applications: PDF + mail – Interconnection Application/Agreement for Net Metering Systems (Rider NM)
Interconnection process and documents →Municipal utility · 105,859 residential customers · Missouri
Interconnection process and documents →Electric cooperative · 74,261 residential customers · Missouri
Interconnection process and documents →Municipal utility · 54,199 residential customers · Missouri
Interconnection process and documents →Municipal utility · 45,899 residential customers · Missouri
Interconnection process and documents →Electric cooperative · 41,670 residential customers · Missouri
Interconnection process and documents →Electric cooperative · 39,401 residential customers · Missouri
Interconnection process and documents →Electric cooperative · 35,275 residential customers · Missouri
Interconnection process and documents →Electric cooperative · 34,098 residential customers · Missouri
Interconnection process and documents →Export compensation among the researched Missouri utilities: NEM, Net billing. Rules differ by utility – see each utility page.
Missouri interconnection rule
Missouri Public Service Commission (PSC)
Interconnection rule20 CSR 4240-20.065 (Net Metering) implementing RSMo §386.890 (Net Metering and Easy Connection Act) – Net Metering - interconnection standards for net metering units <=100 kW · source
Applies toPSC rule binds PSC-regulated electrical corporations (Ameren Missouri, Evergy, Liberty/Empire). RSMo 386.890 itself binds all retail electric suppliers incl. municipal utilities (ch. 91) and rural electric cooperatives (ch. 394), whose governing bodies must adopt similar policies.
Application formStatewide standard form 'Interconnection Application/Agreement for Net Metering Systems with Capacity of One Hundred Kilowatts (100 kW) or Less' (all-in-one document for <=10 kW per statute).
Timelines30 days (<=10 kW) / 90 days (>10 kW) for approval; utility acts within 21 days after post-construction documentation; approval expires if not interconnected within 1 year; 15 days for unchanged system takeover.
FeesNo application fee in rule; no standby/capacity/interconnection charges beyond those of similar non-generating customers (RSMo 386.890); customer pays added metering/distribution equipment (spread over up to 12 billing cycles).
Insurance<=10 kW: no liability insurance required. >10 kW: at least $100,000 liability insurance (personal injury incl. death and property damage), existing policy or endorsement ok.
External disconnectUtility MAY require a switch, breaker, fuse or similar device near the meter allowing manual instant disconnection by utility worker (20.065(5)(B); RSMo 386.890); not tied to size. Unit must automatically disconnect on loss of utility service.
Export compensationNEM – RSMo §386.890; 20 CSR 4240-20.065
Excess generation credited at least at avoided fuel cost, carried to next bill, expires after 12 months. Aggregate availability until 5% of supplier single-hour peak; supplier may stop approving once 1% of prior-year peak reached in a calendar year. Electrician/engineer certification required before interconnection.
Municipal utilities and electric cooperatives must offer net metering under RSMo 386.890 (<=100 kW, same 30/90-day timelines, certification) and adopt similar interconnection policies/forms through their governing bodies; additional standards and insurance exemption criteria for >10 kW set by the local governing body.
| Level | Up to | Criteria / review / fee |
|---|---|---|
| <=10 kW | 10 kW | Renewable net metering unit <=10 kW · Approve/deny within 30 days · No application fee in rule |
| >10 kW to 100 kW | 100 kW | Renewable net metering unit <=100 kW · Approve/deny within 90 days · No application fee in rule |
- RSMo 386.890: https://revisor.mo.gov/main/OneSection.aspx?section=386.890 (retrieved 2026-11-13)
- 20 CSR 4240-20.065 (LII copy): https://www.law.cornell.edu/regulations/missouri/20-CSR-4240-20-065 (retrieved 2026-11-13)
- MO SOS 20 CSR 4240-20 (403 from fetch): https://www.sos.mo.gov/CMSImages/AdRules/csr/current/20csr/20c4240-20.pdf (retrieved 2026-11-13)
All 132 utilities in Missouri
- Ameren Missouri1,100,654
- Evergy Missouri West308,573
- Evergy (Missouri Metro / Kansas Metro)276,162
- Liberty (Empire District)144,059
- City Utilities of Springfield105,859
- Cuivre River Electric Cooperative Inc.74,261
- City of Independence54,199
- City of Columbia45,899
- Southwest Electric Cooperative, Inc.41,670
- White River Valley El Cooperative Inc.39,401
- Laclede Electric Cooperative, Inc.35,275
- Boone Electric Cooperative34,098
- Ozark Border Electric Cooperative33,262
- Ozark Electric Cooperative Inc.31,915
- Co-Mo Electric Cooperative Inc.31,352
- Intercounty Electric Cooperative Association30,009
- Citizens Electric Corporation24,997
- Platte-Clay Electric Cooperative, Inc.23,816
- Howell-Oregon Electric Cooperative, Inc.23,203
- Three Rivers Electric Cooperative22,757
- Black River Electric Cooperative21,606
- Crawford Electric Cooperative, Inc.19,861
- New-Mac Electric Cooperative, Inc.19,527
- Webster Electric Cooperative19,050
- Osage Valley Electric Cooperative Association16,710
- West Central Electric Cooperative Inc.15,556
- Callaway Electric Cooperative12,767
- Farmers Electric Cooperative, Inc.12,497
- Carroll Electric Cooperative12,212
- Central Missouri Electric Cooperative Inc.11,259
- SEMO Electric Cooperative10,798
- Macon Electric Cooperative10,059
- City of Kirkwood9,522
- Gascosage Electric Cooperative9,292
- City of Rolla8,097
- City of Poplar Bluff7,710
- Consolidated Electric Cooperative7,698
- City of Hannibal7,673
- City of Farmington7,396
- City of Carthage7,234
- City of Sikeston6,928
- City of Lebanon6,078
- Missouri Rural Electric Cooperative5,077
- City of Monett4,174
- Clay County Electric Cooperative Corporation51
- Entergy Arkansas0
- Sac-Osage Electric Cooperative Inc.0
- City of Nixa0
- United Electric Cooperative, Inc.0
- Barry Electric Cooperative0
- Pemiscot-Dunklin Electric Cooperative Inc.0
- City of Jackson0
- Lewis County Rural E C A0
- Grundy Electric Cooperative, Inc.0
- Barton County Electric Cooperative, Inc.0
- City of West Plains0
- SE-MA-NO Electric Cooperative0
- Ralls County Electric Cooperative0
- Tri-County Electric Cooperative Association (MO)0
- City of Marshall0
- City of Fulton0
- City of Kennett0
- North Central MO Electric Cooperative Inc.0
- City of Harrisonville0
- Chillicothe Municipal Utils (MO)0
- City of Sullivan0
- Atchison-Holt Electric Cooperative0
- City of St Robert0
- Howard Electric Cooperative0
- City of Cameron0
- City of Macon0
- Trenton Municipal Utilities0
- City of Waynesville0
- City of Salem0
- City of Higginsville0
- City of Odessa0
- City of Centralia0
- City of Lamar0
- City of California0
- City of Butler0
- City of Mount Vernon0
- City of Fredericktown0
- City of St James0
- City of Malden0
- Carrollton Board of Public Wks0
- City of Cuba0
- City of Palmyra0
- City of Bethany0
- City of El Dorado Springs0
- City of New Madrid0
- City of Ava0
- City of Fayette0
- City of Hermann0
- City of Mountain View0
- City of Vandalia0
- City of Houston0
- City of Monroe City0
- City of Cabool0
- City of Marceline0
- City of Kahoka0
- City of Memphis0
- City of Unionville0
- City of Willow Springs0
- City of Thayer0
- City of Richland0
- City of Slater0
- City of Shelbina0
- City of Gallatin0
- City of Salisbury0
- City of Albany0
- City of Seymour0
- City of Milan0
- City of Mansfield0
- City of Paris0
- City of Steelville0
- City of Rockport0
- City of Crane0
- City of La Plata0
- City of Stanberry0
- City of Winona0
- Lockwood Water & Light Company0
- City of Osceola0
- City of Perry0
- City of Liberal0
- WAPA-- Western Area Power Administration0
- City of Meadville0
- City of Newburg0
- City of Gilman City0
- City of Linneus0
- City of Easton0
- City of Mindenmines0
- City of Hunnewell0
Residential customers in Missouri 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.