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Australia struggling with oversupply of solar power
(www.abc.net.au)
This is a most excellent place for technology news and articles.
Night? Longer periods of cloudy days or storms?
So we are not using it for cars, but to make electricity at night? Just even less efficiently than hydro pumped power? Ok...
Hydroelectric is great where it is available, but it's again limited by landscape and other factors in use