(a) A utility may provide reasonable construction and manufacturer's specifications for utility infrastructure to ensure that the infrastructure is constructed properly and with appropriate materials. A utility that chooses to provide such specifications shall provide persons with a schedule of all approved materials for utility infrastructure with specifications for such materials.
(b) Notwithstanding subsection (a), a utility shall not require that materials or services for the construction of the utility infrastructure be provided by a specific vendor or manufacturer unless using the materials or services by a specific vendor or manufacturer is deemed necessary by the utility for the quality and integrity of the utility's system.
(c) If a material that is required for the construction of the utility infrastructure is available only from the utility, then the utility must provide that material for the customer's or approved contractor's use at the same price as the utility paid for the material. The utility shall not require the customer or approved contractor to pay taxes on the materials above the amount of taxes that the utility paid when acquiring the materials. The utility shall provide an itemized statement of the cost of materials sold to a customer or approved contractor pursuant to this subsection (c).