About intermittency and being a net exporter

Trust, yet verify

While writing the post on the upgrade of the Hornsdale Power Reserve, I became curious how South Australia balances its grid. Looking into the data, it became pretty clear that it aren’t the batteries that doing the balancing. According to the fuel mix data of AEMO, the battery storage output is insignificant compared to the huge swings in output of solar and wind power.

There are several balancing strategies possible. For example, in a previous series on the German energiewende, I found that Germany’s strategy is to use fossil fuels (gas, coal and even lignite) when there is not enough solar & wind and export the surplus to the neighboring countries when there is too much solar & wind.

South Australia also has a high share of solar and wind, so how do they do it?

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