Spire Missouri, Inc. natural gas customers will see rates change under a filing that will take effect on Friday, October 1.

According to a press release, the change reflects a shift in the Weather Normalization Adjustment Rider (WNAR) which authorizes rate adjustments based on weather variations.

Officials say the purpose of the WNAR tariff is to adjust revenues, either positive or negative, for differences between actual heating degree days and normal heating degree days. This filing generally reflected colder than normal weather in the Spire East and Spire West districts.

Under tariffs filed by the natural gas company, a Spire Missouri East residential customer using 100 Ccf of natural gas in a given billing month would see a line item charge of $0.19 in their bill, which is a $0.82 reduction in their bill from the current WNAR rate. A Spire Missouri West residential customer using 100 Ccf of natural gas in a given billing month would see a line item charge of $0.58 in their bill, which is a $0.48 reduction in their bill from the current WNAR rate.

Spire Missouri West provides natural gas service to approximately 522,000 customers. Counties effected in the KMMO listening area included Carroll, Howard, Johnson, Lafayette, Pettis and Saline.