Ameren Missouri customers should see a decrease in the fuel adjustment charge on their electric bill with a lower tariff scheduled to take effect on Sept. 24.
The change in the tariff adopted by the Missouri Public Service Commission will mean a reduction of approximately $1.97 a month - from $6.07 to $4.10 a month - for the average residential customer who uses 1,100 kWh of electricity a month.
In its filing, Ameren Missouri stated the proposed adjustment to customer rates primarily reflected changes in its fuel and purchased power costs net of off-system sales revenues experienced during the four month period of February to May.
The fuel adjustment charge was authorized by the Commission for Ameren Missouri in a regular rate case in 2009. The FAC tariff allows the company to pass increases or decreases in its net fuel and purchase power costs to customers outside of a general rate case.
The FAC allows the company to recover most – up to 95 percent – of its costs, but not all, to encourage conservation and prudence in fuel use by the company. Fuel adjustment charges are intended to help companies deal with volatility in fuel pricing. Any charges resulting from the fuel adjustment clause must appear in a separate category on customers' bills.
Ameren Missouri provides electric service to approximately 1.2 million customers in Missouri.