SB 618 revises Missouri law governing electrical corporations by replacing the current prohibition on recovering construction work in progress (CWIP) costs with a limited authorization for certain new natural gas-generating units. Under the bill, an electrical corporation may seek to include CWIP in rate base for a qualifying project, subject to Missouri Public Service Commission review, cost limits, refund obligations if costs are later found imprudent, and a sunset date of December 31, 2035 unless extended through 2045 after a 2035 hearing. The bill also establishes a new framework for capacity planning and integrated resource planning for electric utilities.
The measure authorizes the commission to require annual capacity documentation showing that utilities own or control sufficient capacity for the upcoming planning year and three years beyond, and it allows the commission to disallow costs if a utility’s failure to maintain sufficient capacity is found imprudent. It further requires the commission to begin quadrennial integrated resource planning proceedings by 2026, set filing schedules by 2027, and evaluate utilities’ long-term plans over a minimum 16-year horizon. Those plans must address reserve margins, environmental requirements, load forecasts, generation options, transmission and distribution needs, demand response, fuel supply, rate impacts, and implementation plans for specific resources.
The bill gives the commission a more structured role in approving preferred resource plans and, if a plan is found reasonable and prudent, treats that determination as permission to build or acquire specified supply-side resources. It also streamlines later certificate-of-convenience-and-necessity review for approved resources by limiting the issues the commission may consider and requiring a decision within 120 days. If a plan is deficient, the utility may be required to refile and could lose eligibility for certain approvals or CWIP treatment for unapproved additions. The bill also defines terms such as “firm gas transportation” and “generation attribute,” and authorizes rulemaking to implement the new requirements.
The overall sentiment reflected by the bill text is pro-development and reliability-focused, with an emphasis on ensuring utilities can plan ahead for capacity needs and new generation while still subjecting projects to commission oversight. Because there are no committee transcripts or recorded votes provided, there is no direct evidence of support or opposition from discussion or voting history. Based on the structure of the bill, it appears designed to balance utility investment flexibility with regulatory review, cost controls, and consumer protections through refund and prudence provisions.
The main points of potential contention are likely to be the return of CWIP treatment for new natural gas generation, the effect on customer rates, and the extent to which the bill favors utility-owned generation over other resource options. Environmental and consumer advocates may object to expanded cost recovery before a plant is operational and to the bill’s facilitation of gas infrastructure, while utilities and reliability advocates may support the measure as necessary for meeting future load growth and maintaining adequate capacity. Another possible area of debate is the bill’s broad planning mandate and the degree of discretion it gives the commission in setting resource adequacy standards and approving utility plans.
SB 618 would substantially amend Missouri utility regulation by repealing and replacing section 393.135 and adding new sections 393.1080 and 393.1900. It changes how electrical corporations may recover certain construction costs, permits limited CWIP recovery for new natural gas-generating units, and creates new commission authority over capacity reporting, integrated resource planning, and approval of utility resource acquisitions. The bill affects electrical corporations, ratepayers, and the Missouri Public Service Commission by expanding planning obligations and altering the timing and scope of cost recovery for generation projects.
No committee transcript or vote history was provided, so there is no recorded legislative debate to summarize. From the bill’s contents, the measure appears generally favorable to utility planning and new generation development, while retaining oversight mechanisms intended to protect ratepayers. The bill’s tone suggests a policy emphasis on reliability, resource adequacy, and long-term planning rather than a purely deregulatory approach.
Likely areas of contention include the bill’s authorization of CWIP recovery for new natural gas generation, which can shift financing costs to customers before a project is operational, and the potential rate impacts of allowing utilities to recover construction costs earlier. Environmental stakeholders may also object to the bill’s support for new gas-fired generation and the role of fossil-fuel infrastructure in long-term planning. On the other hand, utilities and reliability advocates are likely to support the bill’s emphasis on capacity adequacy, streamlined approval of approved resources, and clearer integrated resource planning requirements.