terawattóra

Terawatt-hour is a unit of energy commonly used to measure large amounts of electrical energy production or consumption. It is equivalent to one terawatt of power sustained for one hour. A terawatt is a unit of power equal to 10^12 watts, or one trillion watts. Therefore, a terawatt-hour represents 10^12 watt-hours. To put this into perspective, a watt-hour is the energy consumed by a 1-watt device operating for one hour. A terawatt-hour is a very large quantity of energy. For context, the total annual electricity consumption of many countries is measured in terawatt-hours. The prefix "tera" signifies a trillion, so a terawatt-hour is a trillion watt-hours. It is a standard unit within the International System of Units (SI) for energy, although kilowatt-hours are more commonly used for household electricity billing.