The Total Monthly Fuel Cost Adjustment is determined by the cost of the natural gas, coal and other fuels used to generate your power. Because of frequent fluctuations in these fuels, TVA makes an adjustment to the “fuel cost” portion of your electric rate each month based on the current market price of these fuels. The current Total Monthly Fuel Cost Adjustment used to help determine your energy bills this month can be found by clicking here. To see our complete residential energy rates, click here. To see our complete commercial energy rates, click here.