Authority: IC 8-1-1-3; IC 8-1-8.5-3

Affected: IC 5-14-3; IC 8-1-1-8; IC 8-1-8.5; IC 8-1.5

Sec. 2.5. (a) An interested party that does not file comments under this rule may still participate as a party or advance an argument or position in a formally docketed proceeding before the commission. Similarly, the content of comments filed by an interested party under this rule shall not preclude an interested party from advancing an argument or position in a formally docketed proceeding before the commission, whether or not that argument or position was raised in comments submitted under this rule.

(b) When a utility takes a resource action, it shall be consistent with the most recent IRP submitted under this rule, including its:

1. (1) inputs;
2. (2) data and assumptions;
3. (3) methods;
4. (4) models;
5. (5) judgment factors; and
6. (6) rationales used to determine inputs, methods, and risk metrics;

unless differences between the most recent IRP and the resource action are fully explained and justified with supporting evidence, including an updated IRP analysis.

(c) Documents submitted to the commission or created pursuant to this rule may be used as follows:

1. (1) To assist the commission in the preparation of the commission analysis.
2. (2) In the preparation of a commission staff report in formally docketed proceedings before the commission.
3. (3) In a formally docketed proceeding before the commission if admitted into evidence.

(Indiana Utility Regulatory Commission; 170 IAC 4-7-2.5; filed Dec 5, 2018, 11:49 a.m.: 20190102-IR-170180127FRA; readopted filed Apr 11, 2019, 9:04 a.m.: 20190508-IR-170190136RFA; readopted filed Sep 12, 2025, 11:43 a.m.: 20251001-IR-170240381RFA)