4 Colo. Code Regs. § 723-4-4550
These rules foster the examination of capital investment of gas distribution utilities that are subject to the Commission's regulatory authority through the development and approval of gas infrastructure plans, planned projects, and alternatives to planned projects. The purpose of these rules is to establish a process to determine the need for, and potential alternatives to, capital investment, consistent with the objectives of maintaining just and reasonable rates, ensuring system safety, reliability, and resiliency, protecting income-qualified utility customers and disproportionately impacted communities, and supporting utility efforts to meet applicable clean heat targets pursuant to rule 4728, as established in § 40-3.2-108, C.R.S.
4 CCR 723-4-4550