Coal is a resource that is most often used by primitive societies as a power source. The poor efficiency of coal compared to more advanced resources generally discourages once power production facilities such as Fission or Fusion power plants can be constructed.
Coal is a Planetary Resource that can be extracted from a Coal Mine, if it is listed on the Planet's Geological Survey (GEO), or converted from Raw Resources on any Planet using a Stripmining Complex.
1 ton
Already learned - your empire starts with this technology.
Content contributed by Raven Zachary.