Brown coal, also known as LIGNITE, is a low-grade coal that is used mainly for electricity generation. It is the lowest rank of coal and has a higher moisture content than other types of coal. It is usually brownish in color and has a high carbon content. Brown coal is found in many parts of the world, including Europe, North America, and Australia. It is a relatively inexpensive source of energy and is often used to generate electricity in countries with limited access to other forms of energy.