Iowa Code § 390.8A

In addition to the powers conferred upon a city or electric power agency elsewhere in this chapter, a city or electric power agency may acquire ownership interest in a transmission facility, including ownership of the capacity of such facility, within this state or in any other state for the purpose of participating with other utilities in transmission to be operated by a regional transmission organization or an independent transmission operator approved by the federal energy regulatory commission. For purposes of this section, “electric power agency” means the same as defined in section 390.9.