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Major energy production or consumption is often expressed as terawatt-hours (TWh) for a given period that is often a calendar year or financial year. A 365-day year equals 8,760 hours, so over a period of one year, power of one gigawatt equates to 8.76 terawatt-hours of energy.
1 terawatt hour per year = 1 × 10 12 W·h / (365 days × 24 hours per day) ≈ 114 million watts, equivalent to approximately 114 megawatts of constant power output. The watt-second is a unit of energy, equal to the joule .
1–3 × 10 3 W tech: heat output of a domestic electric kettle: 1.1 × 10 3 W tech: power of a microwave oven: 1.366 × 10 3 W astro: power per square meter received from the Sun at the Earth's orbit: 1.5 × 10 3 W tech: legal limit of power output of an amateur radio station in the United States up to 2 × 10 3 W
If a plant is only needed during the day, for example, even if it operates at full power output from 8 am to 8 pm every day (12 hours) all year long, it would only have a 50% capacity factor. Due to low capacity factors, electricity from peaking power plants is relatively expensive because the limited generation has to cover the plant fixed costs.
1 quadrillion BTU = 293 TW·h = 1.055 EJ 1 quadrillion BTU/yr = 1.055 EJ/yr = 293 TW·h/yr = 33.433 GW The numbers below are for the total energy consumption or production in a whole year, so should be multiplied by 33.433 to get the average value in GW in that year.
3.4×10 12 J Maximum fuel energy of an Airbus A330-300 (97,530 liters [157] of Jet A-1 [158]) [159] 3.6×10 12 J 1 GW·h (gigawatt-hour) [160] 4×10 12 J Electricity generated by one 20-kg CANDU fuel bundle assuming ~29% [161] thermal efficiency of reactor [162] [163] 4.2×10 12 J Chemical energy released by the detonation of 1 kiloton of TNT ...
Olkiluoto block 3, which achieved first criticality in late 2021 had an overnight cost to the construction consortium (the utility paid a fixed price agreed to when the deal was signed of only 3.2 billion euros) of €8.5 billion and a net electricity capacity of 1.6 GW or €5310 per kW of capacity. [25]
Three Gorges Dam in China, currently the world's largest hydroelectric power station, and the largest power-producing facility ever built, at 22,500 MW. This article lists the largest power stations in the world, the ten overall and the five of each type, in terms of installed electrical capacity.