Indiana interconnection applications
119 electric utilities serve Indiana (EIA-861, 2025): 6 investor-owned utilitys, 40 electric cooperatives, 73 municipal utilitys. Together they serve 2,934,465 residential customers; 11,490 residential customers were on net metering at year-end 2025.
Largest utilities in Indiana
Investor-owned utility · 808,572 residential customers · Indiana
Interconnection process and documents →Investor-owned utility · 469,634 residential customers · Indiana
Applications: PowerClerk – AES Indiana Interconnection (PowerClerk)
Interconnection process and documents →Investor-owned utility · 433,889 residential customers · Indiana
Applications: PDF + email – NIPSCO New Business Department (Rider 679 Application for Interconnection)
Interconnection process and documents →Investor-owned utility · 537,980 residential customers · Indiana
Applications: PowerClerk – AEP PowerClerk
Interconnection process and documents →Investor-owned utility · 134,700 residential customers · Indiana
Applications: PDF + email – CenterPoint New Service (fillable PDF with 'Submit Application' button, email or fax 888-287-2770)
Interconnection process and documents →Electric cooperative · 38,554 residential customers · Indiana
Interconnection process and documents →Electric cooperative · 35,216 residential customers · Indiana
Interconnection process and documents →Electric cooperative · 31,034 residential customers · Indiana
Interconnection process and documents →Municipal utility · 29,600 residential customers · Indiana
Interconnection process and documents →Electric cooperative · 29,540 residential customers · Indiana
Interconnection process and documents →Electric cooperative · 29,132 residential customers · Indiana
Interconnection process and documents →Electric cooperative · 27,707 residential customers · Indiana
Interconnection process and documents →Export compensation among the researched Indiana utilities: Net billing. Rules differ by utility – see each utility page.
Indiana interconnection rule
Indiana Utility Regulatory Commission (IURC)
Interconnection rule170 IAC 4-4.3 (as amended by LSA #25-368, IURC RM #24-01) – Interconnection of customer facilities · source
Applies toInvestor-owned electric utilities subject to IURC jurisdiction (170 IAC 4-4.3-2). Municipal utilities and electric cooperatives are not covered.
Application formCommission-approved interconnection application and interconnection agreement forms, used by each IOU (170 IAC 4-4.3-4(c)).
TimelinesLevel 1/2: completeness notice 10 business days; determination 15 business days after complete; executable agreement 10 business days after approval; customer returns executed agreement at least 10 business days before operation; final approval after executed agreement and any inspection, conditioned on electrical code official approval (170 IAC 4-4.3-6, -7).
FeesLevel 1: no fee. Level 2: <= $50 + $1/kW nameplate (+ minor modifications/additional review, engineering <= $100/h). Level 3: <= $100 + $2/kW + study time (<= $100/h) (170 IAC 4-4.3-4(e)).
InsuranceNet metering facilities: liability coverage of at least $100,000 (homeowners, commercial or other); utility may not require higher limits or additional policies (170 IAC 4-4.2-8, referenced by 4-4.3-10(a)). Other customer facilities: only reasonable amounts of insurance against reasonably likely risks, mutual indemnification (170 IAC 4-4.3-10(b)).
External disconnectUtility may require the applicant to include a disconnect switch as a supplement to the equipment package (170 IAC 4-4.3-4(d)).
Export compensationNet billing – IC 8-1-40 (P.L.264-2017, SEA 309); 170 IAC 4-4.2 (net metering rule, legacy)
Net metering tariffs closed to new customers after June 30, 2022 (IC 8-1-40-11); legacy NEM customers continue per IC 8-1-40-13/-14. New distributed generation (<= lesser of 1 MW or average annual consumption, IC 8-1-40-3) is credited for excess distributed generation (instantaneous difference, IC 8-1-40-5) at 1.25 x the supplier's average marginal price of electricity of the prior year (IC 8-1-40-17). Applies to IURC-regulated public utilities; excludes municipally owned utilities and certain cooperatives (IC 8-1-40-4).
Municipal utilities and REMC/electric cooperatives are not bound by 170 IAC 4-4.3 or IC 8-1-40 (IC 8-1-40-4 excludes them) and set their own interconnection and DG policies (many through Hoosier Energy / Wabash Valley Power member policies, not reviewed).
| Level | Up to | Criteria / review / fee |
|---|---|---|
| Level 1 (170 IAC 4-4.3-6) | 25 kW | Inverter-based, nameplate <= 25 kW (raised from 10 kW by RM #24-01), certified equipment (IEEE 1547-2018 / UL 1741) · Completeness 10 business days; approval/denial 15 business days after complete; agreement within 10 business days of approval · No application or other fee |
| Level 2 (170 IAC 4-4.3-7) | 2000 kW | Nameplate <= 2 MW, certified equipment, screens (e.g., network: lesser of 10% min load or 50 kW) · Completeness 10 business days; initial review 15 business days after complete; agreement within 10 business days · Up to $50 + $1/kW plus cost of minor modifications/additional review (engineering <= $100/h) |
| Level 3 (170 IAC 4-4.3-8) | Facilities not qualifying for Level 1 or 2; impact and facilities studies · Up to $100 + $2/kW plus actual study time (<= $100/h); applicant pays required facilities |
- IURC Final Rulemaking RM #24-01 (LSA #25-368), amended 170 IAC 4-4.3: https://www.in.gov/iurc/files/ord_RM24-01_093025.pdf (retrieved 2026-11-13)
- 170 IAC 4-4.2-8 Insurance (net metering): https://www.law.cornell.edu/regulations/indiana/170-IAC-4-4.2-8 (retrieved 2026-11-13)
- 170 IAC 4-4.2-1 Definitions (net metering): https://www.law.cornell.edu/regulations/indiana/170-IAC-4-4.2-1 (retrieved 2026-11-13)
- IURC handout: IC 8-1-40 statute text: https://secure.in.gov/iurc/files/2017-07-20-IURC-Tech-Conf-Handout-re-IC-8-1-40.pdf (retrieved 2026-11-13)
All 119 utilities in Indiana
- Duke Energy Indiana808,572
- AES Indiana469,634
- NIPSCO433,889
- Indiana Michigan Power (I&M)425,007
- CenterPoint Energy Indiana South134,700
- Hendricks County Rural E M C38,554
- South Central Indiana REMC35,216
- Northeastern Rural E M C31,034
- City of Anderson29,600
- Tipmont Rural Electric Member Corporation29,540
- Johnson County Rural E M C29,132
- Clark County Rural E M C27,707
- Southeastern Indiana R E M C26,271
- City of Mishawaka25,180
- Jackson County Rural E M C24,354
- Harrison County Rural E M C23,482
- Boone County Rural EMC19,224
- Utilities District-Western IN REMC19,049
- Kankakee Valley Rural E M C19,027
- NineStar Connect18,751
- Heartland REMC18,144
- Kosciusko County Rural E M C17,473
- City of Richmond16,253
- Western Indiana Energy REMC15,012
- Carroll-White REMC14,853
- RushShelby Energy14,766
- Dubois Rural Electric Cooperative Inc.13,484
- Whitewater Valley Rural EMC12,035
- City of Greenfield12,009
- City of Logansport11,507
- Bartholomew County Rural E M C11,493
- Noble County R E M C11,036
- Steuben County Rural E M C9,193
- Southern Indiana R E C, Inc.8,957
- City of Peru8,847
- Crawfordsville Electric, Lgt & Power8,685
- City of Lebanon8,328
- Decatur County Rural E M C8,187
- Daviess Martin County R E M C8,024
- City of Frankfort7,857
- Jasper County Rural E M C7,786
- City of Auburn6,826
- City of Jasper6,499
- City of Bluffton5,003
- Paulding-Putman Electric Cooperative, Inc.3,965
- Midwest Energy Cooperative320
- City of Owensboro0
- Parke County Rural E M C0
- Butler Rural Electric Cooperative Inc.0
- Henry County Rural E M C0
- Orange County Rural E M C0
- City of Washington0
- Marshall County Rural E M C0
- Lagrange County Rural E M C0
- Fulton County Rural E M C0
- Miami-Cass County Rural E M C0
- Jay County Rural E M C0
- City of Columbia City0
- Warren County Rural E M C0
- City of Tell City0
- Tipton Municipal Electric Utility0
- City of Scottsburg0
- Lawrenceburg Municipal Utils0
- City of Huntingburg0
- Town of Bargersville0
- City of Linton0
- City of Garrett0
- Town of Pendleton0
- City of Rensselaer0
- City of Gas City0
- Edinburgh Municipal Utilities0
- Bremen Electric Light & Power Company0
- City of Greendale0
- Town of Winamac0
- Town of Rockville0
- Town of Paoli0
- Town of Knightstown0
- City of Covington0
- City of Rising Sun0
- Town of Walkerton0
- Town of Middletown0
- Town of Centerville0
- Flora Utilities0
- Newton County Rural E M C0
- Town of Veedersburg0
- Town of Avilla0
- City of Hagerstown0
- Town of Frankton0
- Town of South Whitley0
- City of Williamsport0
- Town of New Carlisle0
- Town of Argos0
- Town of Ferdinand0
- City of Thorntown0
- Cannelton Utilities0
- Town of Warren0
- Town of Brookston0
- Town of Pittsboro0
- Darlington Light & Power Company0
- Town of Kingsford Heights0
- Town of Ladoga0
- Town of Montezuma0
- Town of Spiceland0
- Town of Brooklyn0
- Town of Jamestown0
- City of Waynetown0
- Dublin Municipal Electric Utility0
- Town of Bainbridge0
- Town of Etna Green0
- Town of Chalmers0
- Town of Coatesville0
- City of Troy0
- Town of Advance0
- City of Lewisville0
- City of New Ross0
- Town of Straughn0
- Town of Dunreith0
- Town of Crane0
- AGC Division of APGI Inc.0
Residential customers in Indiana 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.