Modifies and creates new provisions relating to electric utilities

HB 713 requires Missouri electric utilities to certify to the Public Service Commission before closing any existing thermal power plant over 100 megawatts (effective January 1, 2026 or later) that they have secured replacement reliable electric generation equal to the plant’s capacity. This replacement must be operational concurrently with the closure (or within 120 days if using existing interconnection facilities), verified using regional transmission operator metrics for summer/winter capacity. The bill directly affects all Missouri-based electric utilities operating such large power plants, ensuring grid reliability during transitions without relying on temporary power contracts.