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Murray Arthur-Worsop's avatar

I should expand my comment on gas prices impacting electricity prices. In Australia, base load is provided by coal fired power plants, which are in the process of being phased out and gas fired generators. Gas fired generators are deemed best suited to quickly meet shortfalls in wind and solar generation and therefore set the wholesale price in such circumstances.

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Murray Arthur-Worsop's avatar

A very interesting article and somewhat contrary to much of the negativity regarding renewables I have been reading over the past year. However, you have not provided comment on electricity prices paid by consumers apart from noting negative pricing is occuring in markets as a consequence of surplus electricity.

My experience in Australia, which has very high penetration of renewables, is that the latter is not translating into lower electricity prices, and in fact the state with the highest penetration of renewables (South Australia) has the highest electricity prices. In part this seems to be due to high gas prices impacting wholesale prices. This is in part being addressed through the large number of big batteries being installed, in line with your analysis, and it has also prompted a review of whether the electricity market in Australia is still fit for purpose.

Another factor is the very high cost of connecting dispersed solar and wind farms to the existing grid. All of the above has prompted a push towards nuclear energy from the opposition party in Australia. Independent economic analysis has shown that the proposal would reduce electricity prices but as you might expect the analysis while sound on one level, is fraught with assumptions and has been met with a frenzied response.

Interested in your thoughts or comment on any or all of the above.

Murray Arthur-Worsop

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