The Missouri Public Service Commission has approved a request filed by Spire Missouri, Inc. (Spire Missouri) to change the Infrastructure System Replacement Surcharge (ISRS) on the bills of its natural gas customers.

The ISRS first appeared on Spire West customer bills in April 2004 and on Spire East customer bills in June 2004.

This ISRS adjustment reflects infrastructure replacement investments made by the natural gas company during the period of Oct. 1, 2022 through Feb. 28, 2023. These costs for natural gas pipeline replacements and relocations are not currently included in Spire Missouri’s rates.

In Spire Missouri’s mostly recently completed general rate case (GR-2022-0179), ISRS rates were re-set to zero, effective Dec. 26, 2022. As a result of this case, the ISRS for a Spire East residential customer will be $0.37 a month. For Spire West residential customer, the ISRS will be $0.59 a month. Spire Missouri seeks to have the change take effect on May 1, 2023.

Spire East provides natural gas service to approximately 662,800 customers in the City of St. Louis as well as the Missouri counties of St. Louis, St. Charles, Butler, Iron, Franklin, Jefferson, Madison, Crawford, St. Francois and Ste. Genevieve. Spire West provides natural gas service to approximately 532,900 customers in Andrew, Barry, Barton, Bates, Buchanan, Carroll, Cass, Cedar, Christian, Clay, Clinton, Dade, DeKalb, Greene, Henry, Howard, Jackson, Jasper, Johnson, Lafayette, Lawrence, McDonald, Moniteau, Pettis, Platte, Ray, Saline, Stone and Vernon counties.