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Gavin Miller's avatar

Afternoon PJQ,

Good to see you contributing to the debate - any plans to return to Twitter/X? Your presence is missed there. What are your impressions of other platforms?

Re: COP28 deal confirms what Australia already knows: coal is out of vogue and out of time

'the world has finally committed to weaning itself from these carbon-based drivers of climate change'

Q- what are the ramifications of not going along with the commitment?

'Australia must now decide what kind of energy superpower it wants to be: the home of a sustainable future, or the last refuge of coal and gas extraction.'

'Given the absence of a domestic motor vehicle industry in Australia, the current government’s inaction on electric vehicles is surprising. It appears driven in part by a fear of populist campaigns by the Coalition and others about the effects on motorists.'

These paragraphs make it seem like you think that Australian governments have a choice. Well maybe a future one will in 2025 hopefully eg. minority Labor with many Teals/Indies, but at the moment isn't it a duopoly controlled by corporations & the Murdochracy ( I know you don't think they hold much sway, but many commentators do).

Be good to get your opinion on the 2party Lib/Lab mutualism.

Thanks, cheers

James Wimberley's avatar

Agree on the main points, but not energy exports. Apart from microstates, most countries have enough renewable resources to meet their own energy needs without incurring long-distance transport costs and exposing themselves to the demonstrably high political and economic risks of trade dependency. The default and baseline solution is energy autarky. From that starting-point, many countries will find that comparative-advantage trade in energy with neighbours, overwhelmingly in the weightless form of electricity, will save them money at acceptably low risks, as within Europe (here including the UK) and North America. There won’t be any energy superpowers in a renewable world, and good riddance to them.

Australia has only one suitable neighbour for energy trade, New Zealand, which has plentiful cheap hydro at home, and it's too far for an HVDC cable to be worthwhile. Who else can Australian solar energy be sold to? Indonesia is cloudy, so its solar power will be more expensive, but the cost of HVDC cables across a deep oceanic trench will be very high, and Indonesia is not exactly a close ally. Then there is Japan. It has poor solar resources like the UK, and a similar irrational objection to onshore wind, though plenty of ocean for out-of-sight floating wind farms.

The dream for Australian promoters is to export hydrogen, matching a similar delusion by Japanese officials and corporations. The obstacles are immense, and the dreams depend on massive and irrational subsidies. Hydrogen is even harder to ship than fossil gas: you either have to use very high pressures or very low temperatures, both costly and quite risky. Hydrogen is simply too dangerous for heating buildings, let alone cooking. For transport, hydrogen fuel-cell cars have decisively lost the market battle with BEVs, unsurprisingly so as inserting two lossy conversions from and to electricity in the pathway creates a large and unavoidable drop in comparative efficiency.

I go along with Mike Barnard’s conclusion that in a green economy hydrogen has just two assured future markets, for chemical reasons rather than energy ones: virgin ironmaking and nitrogenous fertiliser. He is rather bearish on the volumes, a nerdy dispute we can leave aside for now. Since hydrogen is a pig to transport, and can readily be made by electrolysis anywhere you have both sunshine and water, there is a strong case for reducing iron ore near the mines. I don’t know enough about fertiliser to have an opinion on it. The main iron ore ones are currently in Western Australia and the Brazilian Amazon, which tick the boxes, though Namibia and Mauretania may weirdly have futures as industrial powers. In addition, shipping iron pellets rather than ore saves 40% of the weight. Building hydrogen DRI plants near Pilbara may not turn out to be optimal, but is certainly a better bet than shipping both ore and hydrogen in separate carriers to identical DRI plants in Japan. Technically Australia could go further downstream and add the electric furnaces to make steel, but the payoff is less obvious. Unlike iron, steel is a differentiated product and there is a lot to be said for staying closer to the customers.

In the long history of humanity up to the Industrial Revolution, energy supplies, though scant, were local and sustainable: wind- and water-mills, sails, firewood, and the labour of draught animals and humans themselves. Towns and cities had to be supplied with firewood, which came from fairly local coppiced forests. Gilgamesh had to venture far into Anatolia to find intact cedar forests to plunder, against the strong opposition of the indigenous deity Humbaba, but that was for much scarcer construction timber for ships, temples and palaces. IIRC the transition to technically inferior coal was forced on English ironmasters around 1700 AD by deforestation – there wasn’t enough wood left, and transport costs limited Nordic timber, plentiful then as now, to high-value uses like shipbuilding. For a mere three centuries we have foolishly been running our economies wastefully on unsustainable and climate-wrecking fossil fuels. That nasty interlude will come to an end in the next 20 years, tapping the sun as well as the winds. Goodbye coal, goodbye oil, goodbye fossil gas. And good riddance to you too.

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