Äänekoski pulp mill was built 25 years ago. During these years the mill has produced over ten million tons of pulp, of which one half is softwood pulp and the other half birch pulp. Today, the production of birch pulp amounts to approximately 80 percent. The annual capacity of the mill is presently 500,000 tons.There have been various investments made into the mill during its life cycle. This year, the investments will focus on improving the runnability of the digestor. Also, the electrostatic precipitator of the recovery boiler will be repaired.Metsä Botnia Äänekoski mill has around 200 employees.