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Wood (as energy source)

Biomass receives and stores energy from the sun. When burned, this energy is released as heat. Wood fuel (commonly referred to as fuelwood) serves a variety of heating purposes although the most common fuelwood-based practices around the world cooking and heating—especially in developing nations.

Calculating how much wood is harvested and burned each year is difficult to determine because fuelwood collection and use occurs predominantly through informal practices. As a result there is a dearth of precise data on wood energy use. This stands in contrast to non-biomass energy sources such as oil and natural gas, which have been subject to more in-depth analysis.

According to the United Nations Food and Agricultural Organization (FAO), biomass accounts for roughly 30 percent of the total energy consumed in ...

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