Lignite is the lowest rank of coal, often referred to as brown coal, used almost exclusively as fuel for steam-electric power generation. It is brownish-black and has a high inherent moisture content, sometimes as high as 45 percent The heat content of lignite ranges from 9 to 17 million Btu per ton on a moist, mineral-matter-free basis. Production data include quantities extracted from surface and underground mines, and normally exclude wastes removed at mines or associated reparation plants.
| Date | Valeur | Modifier , % |
|---|---|---|
| 2022 | 97 892 | 11,41 % |
| 2021 | 87 867 | 8,72 % |
| 2020 | 80 821 | -10,46 % |
| 2019 | 90 263 | 1,75 % |
| 2018 | 88 712 | 7,47 % |
| 2017 | 82 548 | -6,91 % |
| 2016 | 88 678 | 3,27 % |
| 2015 | 85 870 | 4,05 % |
| 2014 | 82 530 | -5,24 % |
| 2013 | 87 094 | 6,51 % |
| 2012 | 81 774 | 12,16 % |
| 2011 | 72 907 |