Global Coal Market Global Coal Market Coal comes in three major grades, anthracite (85% carbon), bituminous (50 to 75% carbon), and lignite (40% carbon). Anthracite is the most exploited and most rapidly depleted. Thermal coal represents about 90% of use, mainly in power stations. Share this:Click to share on LinkedIn (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)