Senate perfects energy bill that lays groundwork for zero‑emission credits and in‑state battery incentives

The Missouri Senate on April 8 perfected a substitute to Senate Bill 838, a bill sponsors said is designed to create a statutory framework for future zero‑emission credits and to add battery energy storage systems to the state’s renewable energy credit program.

Senator from the eighth (speaker 11), the bill’s floor sponsor, told colleagues the measure is “laying the groundwork for nuclear eventually in the state” and would allow the Environmental Improvement and Energy Resource Authority (EIERA) and the Public Service Commission (PSC) to participate in designing a future zero‑emission credit program. “Section 3…adds eligible battery energy storage systems,” the sponsor said, adding the intent is to “get these facilities built in Missouri” by giving in‑state generation and storage extra credit value.

Supporters said the bill is largely preparatory. The substitute adds a definition of an eligible battery energy storage system and proposes a higher compliance value for in‑state generation that is stored locally: existing language that counts each in‑state kilowatt‑hour produced as 1.25 kWh for compliance would be augmented so that a kilowatt‑hour generated and stored in an eligible in‑state battery that becomes operational after December 31 would count as 1.50 kWh. The sponsor described that extra 0.25 kWh as an incentive for storage facilities to locate in Missouri.

At the same time, some senators said the bill raises significant consumer‑protection and finance questions. The Senator from the 24th (speaker 12) asked whether shifting administration of some programs to the Department of Natural Resources (from the Department of Economic Development) was appropriate; the sponsor replied the move reflects departmental expertise. The Senator from the eleventh (speaker 16) and others pressed the floor about whether financing tools that let utilities recover costs while a plant is under construction (construction‑work‑in‑progress or CWIP, sometimes called QUIP) would expose ratepayers to added costs. "My constituents are suffering with all kinds of high bills," the senator said, urging protections; other supporters argued paying some costs during construction can reduce long‑term financing charges.

Floor amendments tightened some potential pathways for automatic ratemaking changes and added procedural safeguards. One amendment directed the state Department of Transportation to develop criteria for co‑locating transmission lines in highway rights‑of‑way to reduce private‑property impacts; another clarified that Public Service Commission rulemaking would be required to implement a zero‑emission credit market and that credits would be tradable certificates that could be used only once, mirroring renewable energy standards.

After amendment debate and votes on multiple floor changes, the sponsor moved the perfected substitute. The Senate declared the substitute perfected and ordered it printed. The measure will proceed in the legislative process for printing and subsequent steps.

What happens next: If enacted, the bill would set statutory definitions and program authority that could let Missouri capture extra compliance credit for in‑state batteries and reserve a regulatory role for the PSC in any future ZEC market—actions supporters say will make the state a more attractive regulatory environment if new nuclear or other zero‑emission facilities are proposed. Opponents warned the structural financing questions and consumer impacts remain politically and technically fraught and will require careful rulemaking and oversight.