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 | 15 038 | -4,08 % |
| 2021 | 15 677 | 7,32 % |
| 2020 | 14 607 | -5,87 % |
| 2019 | 15 518 | -5,21 % |
| 2018 | 16 372 | -8,65 % |
| 2017 | 17 922 | -4,24 % |
| 2016 | 18 716 | 12,07 % |
| 2015 | 16 701 | -15,74 % |
| 2014 | 19 821 | -0,71 % |
| 2013 | 19 964 | 0,25 % |
| 2012 | 19 915 | -15,29 % |
| 2011 | 23 509 |