MO SB957

Establishes Missouri policy to promote combined heat and power (CHP) systems that generate electricity and thermal energy simultaneously, reducing pollution and enhancing grid reliability

Requires electrical corporations to purchase electricity from eligible CHP systems meeting specified criteria: 50 megawatts or less capacity, 60% operating efficiency, NOx emissions at 0.07 pounds per megawatt-hour, and 20% electricity and 20% thermal energy output

Mandates tariffs paid at a rate no less than the retail rate for the host site, indexed to natural gas costs, with options for contract durations up to 20 years and time-of-delivery rates encouraging peak demand generation

Makes tariffs available until 500 megawatts of CHP capacity is installed statewide, after which the Public Service Commission determines whether to continue them based on remaining cost-effective potential

Allows utilities to own CHP systems without obtaining certificates of convenience and necessity, and requires rural electric cooperatives and municipally owned utilities to provide market purchase rates for CHP-generated electricity