Bogs have traditionally been harvested for peat, a fossil fuel used for heating and electrical energy. These stacks of peat (also called turf) have been harvested from a bog in Ireland. They will be dried and sold as bricks for heating.

Photograph by Noel Allan, MyShot
  • Peat is the "forgotten fossil fuel." While oil, coal, and natural gas are exported around the world, few outside northern Europe are aware of this energy source.

    In certain circumstances, peat can be an early stage in coal formation. Most of the time, however, peat is a unique material.

    Peat forms in bogs. Bogs are a type of wetland with a high acid content. Like all wetlands, bogs are inhabited by marshy plants, including trees, grasses, and moss. The bog's acidity prevents this vegetation from fully decaying. This partly-decayed organic material builds up in bogs. Over millions of years, it becomes peat.

    Peat is thick, muddy, and, when harvested, looks like dark, earthen bricks. Traditional peat harvesting involves a farmer or laborer manually cutting thick strips of peat with a large, sharp hoe. Areas of harvested peatlands are called cutaway bogs for this reason. (Today, industrial peat harvesting involves huge tractors that scrape peat from the surface of bogs. This scraped peat is then collected into bricks. This is called milled peat.)

    Wet bricks of raw peat are pressed to force out water. The bricks are then dried further, using heat or pressure. The bricks are then used as fuel, mostly for heating homes and businesses.

    Northern Europe, particularly Scandinavia and the British Isles, have the most peatlands harvested for fuel use. However, peat bogs can be found from Tierra del Fuego to Indonesia. Finland, Ireland, and Scotland are the biggest consumers of peat as a fuel.

  • Term Part of Speech Definition Encyclopedic Entry
    acid Noun

    chemical compound that reacts with a base to form a salt. Acids can corrode some natural materials. Acids have pH levels lower than 7.

    bog Noun

    wetland of soft ground made mostly of decaying plant matter.

    British Isles Plural Noun

    group of islands in the Atlantic Ocean off Western Europe, including Great Britain, Ireland and several smaller islands.

    coal Noun

    dark, solid fossil fuel mined from the earth.

    cutaway bog Noun

    wetland bog from which peat has been removed by hand or industrial means. Also called a cutover bog.

    decay Verb

    to rot or decompose.

    earthen Adjective

    made of soil (earth).

    fossil fuel Noun

    coal, oil, or natural gas. Fossil fuels formed from the remains of ancient plants and animals.

    industrial Adjective

    having to do with factories or mechanical production.

    milled peat Noun

    granular particles of peat scraped from the surface of a bog and mixed with other materials by special machinery.

    natural gas Noun

    type of fossil fuel made up mostly of the gas methane.

    Encyclopedic Entry: natural gas
    oil Noun

    fossil fuel formed from the remains of marine plants and animals. Also known as petroleum or crude oil.

    organic Adjective

    composed of living or once-living material.

    peat Noun

    layers of partially decayed organic material found in some wetlands. Peat can be dried and burned as fuel.

    peatland Noun

    wetland bog.

    Scandinavia Noun

    region and name for some countries in Northern Europe: Iceland, Norway, Sweden, Finland, and Denmark.

    Tierra del Fuego Noun

    group of islands at the southern tip of South America.

    unique Adjective

    one of a kind.

    vegetation Noun

    all the plant life of a specific place.

    wetland Noun

    area of land covered by shallow water or saturated by water.

    Encyclopedic Entry: wetland