Provide a sales and use tax exemption for electricity, natural gas, propane, and sewer utilities

LB 117 exempts residential users from Nebraska's sales and use tax on electricity, natural gas, propane, and sewer utilities. It directly affects homeowners and renters in apartments or commercial properties primarily used as residences, where utilities are billed separately from rent. The bill amends tax code section 77-2704.13 to exclude these utility services from taxation when used for qualifying residential purposes. The exemption takes effect January 1, 2026, and repeals the previous tax treatment for these utilities. This is a direct tax policy change for residential utility consumers, not a procedural measure.