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The Modern Maximum was found by Sami Solanki, Ilya G. Usoskin and colleagues [1] as the period of unusually high solar activity [2] which began with solar cycle 15 in 1914. It reached a maximum in solar cycle 19 during the late 1950s and may have ended with the peak of solar cycle 23 in 2000, as solar cycle 24 is recording, at best, very muted ...
Solar cycles still occur during these grand solar maximum periods, but the intensity of those cycles is greater. Likewise, extended periods in which the solar maximum is lower than average are labeled "grand solar minima". Some researchers suggest that grand solar maxima have shown some correlation with global and regional climate changes ...
The Philippines utilizes renewable energy sources including hydropower, geothermal and solar energy, wind power and biomass resources. [citation needed] In 2013, these sources contributed 19,903 GWh of electrical energy, representing 26.44 percent of the country's electricity needs. [1]
Panel generation factor (PGF) [1] is used while calculating the size of solar photovoltaic cells. It is a varying factor depending upon the climate of the site location (depending upon global geographic location). For example, in Thailand it is 3.43, in EU countries it is 2.93, etc. This factor is used in calculation of "Total Watt-Peak Rating ...
The emergence of renewable energy such as hydro, wind and solar power, which operate without an active, controlled supply of fuel and which come to a standstill when their natural supply of energy ceases, requires a more careful distinction between the availability factor and the capacity factor. By convention, such zero production periods are ...
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At the low range of capacity factors is the photovoltaic power station, which supplies power to the electricity grid from a large-scale photovoltaic system (PV system). An inherent limit to its capacity factor comes from its requirement of daylight , preferably with a sun unobstructed by clouds, smoke or smog , shade from trees and building ...
As at Jan 3, 2025, solar cycle 25 is averaging 39% more spots per day than solar cycle 24 at the same point in the cycle (Jan 3, 2014). Year 1 of SC25 (Dec 2019 to Nov 2020) averaged 101% more spots per day than year 1 of SC24.