The SPS would be in Earth’s shadow on solely a couple of days at the spring and fall equinoxes; and even then for a most of seventy five minutes late at the hours of darkness once power demands square measure at their lowest. This characteristic of SPS based mostly power generation systems to avoid the costly storage facilities necessary in several Earth-based power generation systems.Additionally, AN SPS can have none of the polluting consequences of fuel systems, nor the ecological issues ensuing from several renewable or low impact power generation systems.