Coal is a carbon-rich sedimentary rock formed over millions of years, and the coal industry has played a significant part in global energy, industrial development, and environmental policy.
Coal is a combustible black or brownish-black sedimentary rock composed largely of carbon and hydrocarbons, formed from ancient plant material buried under layers of sediment. Over millions of years, heat and pressure transformed this organic matter into coal, a process known as coalification.
Coal is considered nonrenewable because its formation spans geological timescales. The energy stored in coal originates from plants that lived in prehistoric swamp forests, whose remains were compacted and chemically altered into progressively higher-rank coals.
Coal has been used since antiquity. Archaeological evidence shows coal burned in Bronze Age Wales, and classical authors such as Aristotle and Theophrastus described its use. The Romans in Britain used coal for heating, and by the Middle Ages, coal was mined in northern England. In North America, the Hopi people mined and used coal as early as the 12th century. Coal's global significance surged during the Industrial Revolution, when it became the primary fuel for steam engines, metallurgy, and early electricity generation. Although petroleum and natural gas overtook coal in the mid-20th century, coal remained a major global energy source.
Coal is classified into four ranks, based on carbon content and heating value. Anthracite coal(86-97% carbon) has the highest energy content and is used mainly in the metals industry. Bituminous coal (45-86% carbon) is the most abundant in the United States, and is used for electricity generation and as coking coal in steelmaking. Subbituminous coal (35-45% carbon) has a lower heating value and is widely used for electric power generation. Lignite coal (25-35% carbon) is the lowest rank and has a high moisture content; it is used in mine-mouth power plants. These ranks reflect increasing heat and pressure during coalification, with higher-rank coals producing more energy per unit mass.
Coal remains abundant, with major reserves in the United States concentrated in Wyoming, Montana, West Virginia, Pennsylvania, and Illinois. U.S. coal production peaked in 2008, and consumption in 2007, followed by a long decline driven by competition from natural gas and renewables, as well as plant retirements. Employment in the coal sector has fallen 92% over the past century, even as mining efficiency increased.
Coal is mined through surface and underground methods, both now highly mechanized. Surface mining dominates in the western United States, while underground mining remains common in Appalachia.
Coal's environmental impacts are significant. Coal consumption is a major source of CO2, contributing to climate change. Burning coal releases sulfur dioxide, nitrogen oxides, particulates, and mercury, affecting air quality and public health. Surface mining alters landscapes, while underground mining can cause subsidence and water contamination. Coal ash contains heavy metals requiring disposal. These concerns have accelerated the shift toward cleaner energy sources and stricter environmental regulations.
Topics relating to coal, the coal industry, and its use as a source of energy and utilities are the focus of this category.
Recommended Resources
Bloomberg Global Coal Countdown
Led by Bloomberg Philanthropies, the BGCC is an interactive dashboard that tracks the world's remaining coal-fired power plant units and capacity, aggregating data from leading research groups to show operational status, phase-out commitments, and emissions scenarios. The data-driven tracker counts down the world's remaining coal plant units and monitors changes in capacity, retirements, and new proposals. A coal plant status map shows plants by status, and country profiles are included.
https://bloombergcoalcountdown.com/
Coal Age is an industry trade publication covering coal mining, processing, equipment, safety, policy, and global market developments. The website publishes breaking news, feature articles, technical departments, digital editions, event listings, and a calendar of industry conferences. Key sections include Breaking News, Features, Leading Developments, Departments, and Digital Editions. Other content includes a list of upcoming conferences and contact details.
https://www.coalage.com/
The Coal Hub is an online platform for sharing analysis and information about the global coal market. The publication is independent, with no affiliation to industry groups, funding, sponsorship, or endorsement of any kind, and its users include coal market analysts from energy companies and utilities, shippers, banks, coal mining companies, and traders. Its content includes free market updates and headlines, plus premium reports, white papers, and research studies behind a subscription paywall.
https://thecoalhub.com/
The online trade publication is focused on the coal industry, publishing news, analysis, interviews, event reports, and a coal calendar. The platform runs weekly email blasts and maintains current and archived articles. Featured sections include news and analysis, Videos, Event Reports, Interviews, a Coal Calendar, and On the Move. A directory of national and state mining organizations is provided; readers may subscribe to a newsletter, and contact details are provided.
https://coalzoom.com/
FutureCoal is a global industry alliance that promotes a technology-led sustainable coal pathway called Sustainable Coal Stewardship and represents coal value-chain participants worldwide. The organization is the successor to the World Coal Association, positioning itself as a neutral, multi-lateral voice for modernizing coal through abatement technologies and collaboration. The organization describes itself as "The Global Alliance for Sustainable Coal." Memberships are noted.
https://www.futurecoal.org/
Positioned as the world's leading online physical coal trading platform, and the architect of SCoTA (the world's standard coal trading agreement), the platform promotes the development of a liquid and transparent thermal and metallurgical coal market. SCoTA was first introduced in 2001 to create liquidity around standardized specifications of coal. Through the site, users can start trading thermal or met coal. A standard trading contract and prices are noted.
https://www.globalcoal.com/
Warrior Met Coal is a US-based producer of premium steel-making coal, focused on responsible mining and supplying metallurgical coal to global steelmakers. Based in Alabama, the company exports to about 35 countries with fast logistics through the Port of Mobile. Its operations are centered in Alabama with multiple mines and combined reserves for about 40 years of production. The company emphasizes low-cost, safety-focused mining. Career opportunities are posted on the website.
https://warriormetcoal.com/
With locations in the United States and Canada, Westmoreland is a North American mining and energy company with a long history in coal production and mine-to-mouth operations. The company emphasizes safety, community collaboration, and land reclamation, and presents a strategy to diversify beyond coal into other energy and industrial activities. Currently, its core activities are coal mining and supplying fuel to power plants, mine contracting, and reclamation work.
https://westmoreland.com/
The WCA is an international, non-profit, non-governmental association headquartered in London. Created to represent the global coal industry, the organization was originally called the World Coal Institute, taking its current name in 2010. The organization undertakes lobbying, organizes workshops, and provided information on the coal industry to decision-makers in international energy and environmental policy and research discussions, as well as the general public.
https://www.worldcoal.org/
