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Nameplate capacity, also known as the rated capacity, nominal capacity, installed capacity, maximum effect or gross capacity, [1] is the intended full-load sustained output of a facility such as a power station, [2] [3] electric generator, a chemical plant, [4] fuel plant, mine, [5] metal refinery, [6] and many others.
The nominal power of PV devices is measured under standard test conditions (STC), specified in standards such as IEC 61215, IEC 61646 and UL 1703. Specifically, the light intensity is 1000 W/m 2, with a spectrum similar to sunlight hitting the Earth's surface at latitude 35°N in the summer (airmass 1.5), the temperature of the cells being 25 °C.
The Lieberose Photovoltaic Park – one of the largest in Germany – had a nameplate capacity at opening of 52.79 megawatt and cost some €160 million to build [37] [38] or €3031 per kW. With a yearly output of some 52 GWh (equivalent to just over 5.9 MW) it has a capacity factor just over 11%.
The capacity credit can be much lower than the capacity factor (CF): in a not very probable scenario, if the riskiest time for the power system is after sunset, the capacity credit for solar power without coupled energy storage is zero regardless of its CF [3] (under this scenario all existing conventional power plants would have to be retained after the solar installation is added).
As of 2019, about 97% of utility-scale solar power capacity was PV. [75] [76] In some countries, the nameplate capacity of photovoltaic power stations is rated in megawatt-peak (MW p), which refers to the solar array's theoretical maximum DC power output. In other countries, the manufacturer states the surface and the efficiency.
Overall installed capacity is now estimated to be sufficient to supply 2.5% of the nation's annual electricity demand. [9] The insolation is good at about 4.3 to 4.8 kWh/(m 2 ·day). Japan was the world's second largest market for solar PV growth in 2013 and 2014, adding a record 6.9 GW and 9.6 GW of nominal nameplate capacity, respectively.
In 2022, the total global photovoltaic capacity increased by 228 GW, with a 24% growth year-on-year of new installations. As a result, the total global capacity exceeded 1,185 GW by the end of the year. [9] Asia was the biggest installer of solar in 2022, with 60% of new capacity and 60% of total capacity.
Actual demand can be collected at strategic locations to perform more detailed load analysis; this is beneficial to both distribution and end-user customers looking for peak consumption. Smart grid meters , utility meter load profilers, data logging sub-meters and portable data loggers are designed to accomplish this task by recording readings ...