Ala. Code § 45-51A-33.133: Additional Appropriations.

The mayor may at any time authorize, at the request of any department, office, or agency, the transfer of any unencumbered balance or portion thereof in any general fund or utility appropriation from one classification of expenditure to another with the same department, office, or agency, provided that for this purpose the water, gas, and electric utilities shall be deemed to be separate departments. At the request of the mayor, the council may by resolution transfer any unencumbered balance or portion thereof in any general fund appropriation from one department, office, or agency to another.