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 | 89 209 | -1,44 % |
| 2021 | 90 509 | 14,62 % |
| 2020 | 78 966 | -14,41 % |
| 2019 | 92 257 | 3,22 % |
| 2018 | 89 380 | 13,47 % |
| 2017 | 78 770 | 1,74 % |
| 2016 | 77 425 | 25,15 % |
| 2015 | 61 864 | -10,31 % |
| 2014 | 68 975 | -1,19 % |
| 2013 | 69 803 | -5,91 % |
| 2012 | 74 190 | -6,55 % |
| 2011 | 79 388 |