$705.8 billion in 2020 to $786.64 billion in 2021 at a compound annual growth rate (CAGR) of 11.5%. The growth is mainly due to the companies rearranging their operations and recovering from the COVID-19 impact, which had earlier led to restrictive containment measures involving social distancing, remote working, and the closure of commercial activities that resulted in operational challenges. The coal mining market is expected to reach $962.88 billion in 2025 at a CAGR of 5%. High efficiency low emissions (HELE) technologies are a group of diverse technologies developed to increase the efficiencies of coal-fired power plants and reduce carbon dioxide (CO2) and other greenhouse gas (GHG) emissions, as well as non-GHG emissions such as nitrogen oxide (NOx), sulphur dioxide (SO2) and particulate matter (PM). HELE technologies are critical to achieving global climate goals and sustainable development. The coal market outlook shows that HELE coal technologies are operating throughout the world and being deployed commercially in Germany, Italy, India, South Korea, Japan, Poland, Malaysia, Indonesia, the Czech Republic, the Netherlands, Slovenia, the USA, Australia, South Africa and China.