…when the sun doesn’t shine and the wind doesn’t blow.
You’ve surely read such a phrase in any number of articles about supplying climate-friendly electricity to households and economies. Me, I roll my eyes every time I see it, no matter who the author is, but that’s mainly because it has to already be numbingly obvious that sometimes it’s cloudy or nighttime or calm.
Yet you wouldn’t know it from headlines like
or hot takes like
More than 150,000 [rooftop PV] systems installed in the last year alone would produce enough energy for 226,000 homes.
Why not? Because of last night on the mainland, for example:
That’s an average of 91% fossil fuels supplying the evening’s electricity, with most of the remainder from existing hydro. The perseverance of solar and wind development in Australia is absolutely commendable, but even with all current projects completed this picture from last night would barely change.
Renewable energy advocates (and I count myself as one) were cautioned at the beginning of the year to be mindful of the reality of energy supply systems. When the triumphalism shown by advocacy groups like GetUp eventually fails to translate into rapidly diminished fossil fuel consumption at those times when the sun’s not shining and the wind’s not blowing, the resulting cynicism might make the “Tony Abbott years” not seem so bad by comparison.
GetUp heralds Australia’s progress with renewable energy as “the end of the era of big polluting energy companies dominating the market” but the growing awareness of waste and pollution also generated directly by the big overseas manufacturers of their favoured alternative energy sources must be addressed, not ignored just because it’s not happening here.
I’ll conclude with official data on annual shares from Australia’s technology mix.
One can also look at the last 19.5 days of Australian electricity generation here (this web site will now collect stats and report on them going forward) “An initial look at the Australian electricity grid data” http://euanmearns.com/an-initial-look-at-the-australian-electricity-grid-data/
Notice from the bar chart that gas and RE are now about the same. Funny they never mention that. In relative terms it appears that gas+RE has displaced some coal noting that eastern gas now nudges $8-$10 per GJ and most RE gets $85/Mwh subsidy. We’ll eventually go broke at this rate. Most likely we’ll get stuck on 50% coal, 25% gas (largely open cycle) and 25% RE. The Guardian will keep telling us how great it is to be only 75% fossil fuelled.
Dr John storified a whole tweetstream of unassailable logic regarding this.
Laugh or cry dept. Low level radiological waste is to be exported from SA, home of 25% of the world’s uranium, to overseas.
That doesn’t merely ignore the Royal Commission’s findings but reverses them. Having achieved the world’s highest retail electricity prices SA is now hellbent on green correctness. A basket case.