Ind. Admin. Code tit. 170, r. 4-4.3-4 – General interconnection provisions

Sec. 4. (a) An investor-owned electric utility shall provide each of the following three (3) procedures for applications for the interconnection of customer facilities and use:

(1) The Level 1 review procedure described in section 6 of this rule for applications to connect inverter-based customer facilities that:

(A) have a nameplate capacity of not more than twenty-five (25) kilowatts; and

(B) meet the certification requirements of section 5 of this rule.

(2) The Level 2 review procedure described in section 7 of this rule for applications to connect customer facilities:

(A) with a nameplate capacity of not more than two (2) megawatts; and

(B) that meet the certification requirements of section 5 of this rule.

(3) The Level 3 review procedure described in section 8 of this rule for applications to connect customer facilities to its distribution system that do not qualify for either Level 1 or Level 2 interconnection review procedures.

(b) Each utility shall designate a contact person or an office from which an eligible customer can obtain basic application forms and information through an informal process.

(d) The utility may require the applicant to include a disconnect switch as a supplement to the equipment package.

(e) Application and interconnection review fees are set as follows:

(1) A utility may not charge an application fee, or any other fee, to an applicant that requests Level 1 interconnection review. However, if an application for Level 1 interconnection review is denied because the:

(A) application does not meet the requirements for Level 1 interconnection review; and

(B) applicant resubmits the application under another review procedure;

the utility may impose a fee for the resubmitted application, consistent with this section.

(2) For a Level 2 interconnection review, the utility may charge fees up to fifty dollars ($50) plus one dollar ($1) per kilowatt of the customer facility's nameplate capacity, plus the cost of any minor modifications to the electric distribution system or additional review, if required under section 7(q)(3) of this rule. Costs for minor modifications or additional review are:

(A) based on utility estimates; and

(B) subject to review by the commission or its designee.

Costs for engineering work done as part of an additional review may not exceed one hundred dollars ($100) per hour.

(3) For a Level 3 interconnection review, the utility may charge fees up to one hundred dollars ($100) plus two dollars ($2) per kilowatt of the customer facility's nameplate capacity, as well as charges for actual time spent on any impact or facilities studies required under section 8 of this rule. Costs for engineering work done as part of an impact or a facilities study may not exceed one hundred dollars ($100) per hour. If the utility must install facilities to accommodate the interconnection of the customer facility, the cost of those facilities is the responsibility of the applicant.

(f) The interconnection and operation of a customer facility is secondary to and may not interfere with the ability of the utility to meet its primary responsibility of furnishing reasonably adequate service to all customers.

(g) The customer facility electrical installations must conform to the following:

(1) The requirements of local ordinances and inspection authorities.

(2) The applicable requirements of this rule.

(Indiana Utility Regulatory Commission; 170 IAC 4-4.3-4; filed Mar 6, 2006, 9:45 a.m.: 29 IR 2171; readopted filed Jul 12, 2012, 2:12 p.m.: 20120808-IR-170120114RFA; readopted filed Aug 2, 2013, 2:16 p.m.: 20130828-IR-170130227RFA; readopted filed Apr 11, 2019, 9:04 a.m.: 20190508-IR-170190136RFA; readopted filed Sep 12, 2025, 11:43 a.m.: 20251001-IR-170240381RFA; filed Jan 16, 2026, 3:25 p.m.: 20260211-IR-170250368FRA)