Guest opinion by Viv Forbes
Solar power only works while the sun shines – it is part-time power.
Wind power only works when suitable winds blows – also part-time power.
Batteries only work when charged – part-time power again.
Hydro fails in droughts – more part-time power.
And using full-time power like natural gas to fill the inevitable supply gaps from part-time power forces backup gas to operate like part-time power.
Moreover, on sunny windy days, wind and solar generators spew out electricity at little extra cost. These erratic surges of part-time power drive electricity prices so low that even low-cost full-time producers like coal cannot operate profitably at those times. They are throttled back and forced to operate as yet another part-time power plant.
24/7 electricity users such as hospitals, trains, factories, refineries, fuel and water pumps, cash registers, infrastructure and mines cannot operate on part-time electricity.
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