SB 610 revises Missouri law governing electric utilities to create a new framework for financing and planning certain large generation projects, especially new nuclear facilities. The bill repeals and replaces section 393.135 to continue the general prohibition on charging customers for construction work in progress (CWIP) before a facility is operational, but it adds exceptions for new natural gas generating units and, more significantly, for new clean baseload generating plants. It also creates the “Missouri Nuclear Clean Power Act,” which applies to new in-state nuclear-fueled facilities of 600 megawatts or less that are intended to serve Missouri retail customers.
Under the bill, an electrical corporation could seek to include CWIP in rate base for qualifying clean baseload plants before construction is complete, subject to commission review, cost limits, refund obligations if costs are later found imprudent, and a possible sunset in 2035 unless extended to 2045. The bill also authorizes the Public Service Commission to approve additional amortizations to support utility financial ratios and to adopt rules implementing the new provisions. In effect, the bill would shift some construction financing risk from utilities to ratepayers earlier in the project lifecycle, while preserving commission oversight and refund protections.
SB 610 also adds a detailed integrated resource planning statute for electrical corporations. It requires the commission to begin quadrennial planning proceedings, set filing schedules, and require utilities to submit long-range resource plans covering at least 16 years. Those plans must address reserve margins, environmental rules, load forecasts, generation mix, transmission and distribution needs, fuel supply, demand response, rate impacts, and requests for proposals for new supply-side resources. The commission must evaluate whether a preferred plan is reasonable and prudent, and if approved, that determination would streamline later certificate-of-convenience-and-necessity review for the approved resources.
The bill’s impact on state law would be substantial for utility regulation, rate recovery, and resource planning. It expands the circumstances under which utilities may recover construction costs before a plant is in service, creates a special statutory path for nuclear development, and gives the commission a more structured role in approving long-term utility portfolios and specific generation additions. It also affects ratepayers, utilities, and commission proceedings by tying cost recovery to planning approvals and by limiting later challenges for approved projects.
Because there are no recorded committee transcripts or votes in the provided material, the general sentiment cannot be measured from formal debate or roll calls. Based on the bill’s structure, it appears designed to support new clean baseload and nuclear development while maintaining regulatory oversight, suggesting a pro-development but commission-supervised approach. Likely points of contention include the use of ratepayer-backed CWIP for large projects, the risk of cost overruns, the prudence and refund standards, and whether the bill gives utilities too much assurance of recovery before projects are completed.
SB 610 would amend Missouri utility law by replacing the existing CWIP prohibition with targeted exceptions for new natural gas generating units and qualifying clean baseload nuclear plants, and by creating a new statutory framework for integrated resource planning. It would give the Public Service Commission expanded authority over utility planning, rate recovery, and approval of generation projects, while also allowing earlier recovery of certain construction costs and streamlining later certificate proceedings for approved resources. The bill would directly affect electrical corporations, the commission, and ratepayers, especially in relation to nuclear and other large-scale generation investments.
No committee transcript or vote record is provided, so there is no direct evidence of support or opposition from the legislative process in the supplied materials. The bill’s text suggests a generally pro-utility-development and pro-nuclear policy direction, paired with regulatory safeguards such as commission review, prudence standards, and refund provisions. Overall, the measure appears to be framed as a clean-energy and reliability bill rather than a purely deregulatory one.
The main likely points of contention are whether customers should bear construction costs before a plant is operational, whether CWIP should be expanded beyond the current prohibition, and whether the bill sufficiently protects ratepayers from imprudent spending or cost overruns. Another likely issue is the special treatment of nuclear and natural gas generation compared with other resources, including whether the bill favors large utility-owned projects over alternatives such as demand-side management, renewables, or market purchases. The bill also raises questions about the breadth of commission authority, the streamlined approval process for approved projects, and the long-term implications of locking in resource plans and rate recovery mechanisms.