Electric utility affordability.

Electric utility affordability. Requires an electricity supplier, other than a municipally owned utility, that is under the jurisdiction of the Indiana utility regulatory commission (IURC) to do the following: (1) Beginning with the first monthly billing cycle that begins after June 30, 2026, apply a levelized billing plan (plan) to all active residential customer accounts: (A) for service provided under the electricity supplier's standard residential tariff to a household that is eligible for and has applied for assistance from the state's home energy assistance program; and (B) to which a plan does not already apply. (2) Not later than April 1, 2026, offer each customer a mechanism by which the customer may opt out of a plan at any time without penalty. (3) Not later than July 1, 2026, for any plan offered by the electricity supplier and applied to an active customer account, amend or design the plan so that plan's account reconciliation mechanism is applied at such times during a calendar year to reflect typical seasonal patterns of electricity usage by residential customers, but not more than two times during a calendar year. Prohibits an electricity supplier from referring to or promoting a levelized billing plan as a "budget billing plan" unless the levelized billing plan also provides other specified forms of relief for customers. Authorizes the IURC to adopt rules to implement these provisions. Amends existing law granting the IURC the authority to take certain actions with respect to the rates and services of public utilities during emergency circumstances, as judged by the IURC, to provide instead that the IURC may recommend that the governor declare a disaster emergency or proclaim a state of energy emergency during which the IURC may take such actions. Specifies that the emergency must result from: (1) a national economic depression; (2) an act of war; or (3) a disaster of unprecedented size and destructiveness. Provides that an electric utility, other t