Missouri Public Service Commission

JEFFERSON CITY---The Missouri Public Service Commission has approved an application filed by Union Electric Company d/b/a Ameren Missouri which authorizes Ameren Missouri to construct, install, own, operate maintain, and otherwise control and manage a 345 kV switchyard and associated facilities in Callaway County, Missouri (known as the “Burns Switchyard” or “the Project”).

According to the filing, Ameren Missouri, the Midcontinent Independent System Operator, Inc. (MISO), and Show Me State Solar, LLC (“Show Me State Solar”) have entered into a Generator Interconnection Agreement (GIA) which will facilitate the interconnection of a 250 megawatt (MW) solar generation facility in Callaway County. The 250 MW solar facility will be owned and operated by Show Me State Solar and is not subject to this CCN request.

To facilitate the Show Me State Solar interconnection request, Ameren Missouri will construct the Burns Switchyard that will sit on approximately 14-acres. Show Me State Solar has obtained option contracts to acquire the land via two parcels. Upon closing, Show Me State Solar will combine the parcels and convey them to Ameren Missouri.

“The Project provides the transmission facilities necessary, under MISO’s Generation Interconnection Procedure, for interconnection of the Show Me State Solar project,” stated the Public Service Commission Staff. “In addition, the requested CCN is consistent with Ameren Missouri’s current Preferred Resource Plan.”

The Commission approved the application determining: 1) There is a need for the service; 2) Ameren Missouri is qualified to provide the proposed service; 3) Ameren Missouri has the financial ability to provide the service; 4) Ameren Missouri’s proposal is economically feasible; and 5) The service promotes the public interest.

Ameren Missouri provides electric service to approximately 1.29 million customers in Missouri.

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Case No. EA-2023-0226