To put it simply, the sun doesn’t shine and the wind doesn’t blow precisely when you need electricity, at least not all the time. You need to store solar generated energy from midday so that people can turn their lights on in the evening, and you need to store power from windy days to use on still days. Otherwise the electricity is wasted in the moment and non-existent when you need it.
To put it simply, the sun doesn’t shine and the wind doesn’t blow precisely when you need electricity, at least not all the time. You need to store solar generated energy from midday so that people can turn their lights on in the evening, and you need to store power from windy days to use on still days. Otherwise the electricity is wasted in the moment and non-existent when you need it.