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Alison Reeve

@reevealison.bsky.social

Program Director, Energy + Climate Change, Grattan Institute. Views here are my own, naturally. Usually posting from Ngunnawal Country. I block Nazis, climate deniers, and Russian propaganda amplifiers.

1047 Posts3754 Follower328 Folgt
Alison Reeve@reevealison.bsky.social · 8mo ago

Seeing as I'm in sarcastic shout-out mode, I'll also give a big one to the rat that has died in an obscure part of my ceiling in the middle of a heatwave, leaving me to choose between opening the doors and windows and suffering the heat, or staying cool and suffering the smell.

Alison Reeve@reevealison.bsky.social · 8mo ago

Big shoutout to my next-door neighbour who is maximising the amount of legacy feed-in tarrif (90c/kWh) he gets from his 10kW rooftop solar system by cleaning it with two leaf blowers and a pressure washer running off a gen-set. Cannot hear myself think RN.

Alison Reeve@reevealison.bsky.social · 8mo ago

There's a level of wealth above which you don't get happier, and there's a level of wealth above which you think physics no longer applies to you.

Ketan Joshi@ketanjoshi.co · 8mo ago

It is intensely funny to me that tech bro CEOs on an annual salary of 15 petabillion dollars think data centres can go in space because it's very cold but actually they would get obscenely hot because heat won't radiate into the vacuum of space taranis.ie/datacenters-...

cold coolant returned to the loop. Typically the coolant is cooled via convective cooling to the air, so one way or another this is how things work on Earth. In space, there is no air. The environment is close enough to a hard, total vacuum as makes no practical difference, so convection just doesn't happen. On the space engineering side, we typically think about thermal management, not just cooling. Thing is, space doesn't really have a temperature as-such. Only materials have a temperature. It may come as a surprise, but in the Earth-Moon system the average temperature of pretty much anything is basically the same as the average temperature of Earth, because this is why Earth has that particular temperature. If a satellite is rotating, a bit like a chicken on a rotisserie, it will tend toward having a consistent temperature that's roughly similar to that of the Earth surface. If it isn't rotating, the side pointing away from the sun will tend to get progressively colder, with a limit due to the cosmic microwave background, around 4 Kelvin, just a little bit above absolute zero. On the sunward side, things can get a bit cooked, hitting hundreds of centigrade. Thermal management therefore requires very careful design, making sure that heat is carefully directed where it needs to go. Because there is no convection in a vacuum, this can only be achieved by conduction, or via some kind of heat pump. I've designed space hardware that has flown in space. In one particular case, I designed a camera system that needed to be very small and lightweight, whilst still providing science-grade imaging capabilities. Thermal management was front and centre in the design process – it had to be, because power is scarce in small spacecraft, and thermal management has to be achieved whilst keeping mass to a minimum. So no heat pumps or fancy stuff for me – I went in the other direction, designing the system to draw a maximum of about 1 watt at peak, dropping to around 10% of that wh…
Alison Reeve@reevealison.bsky.social · 9mo ago

Happy World Energy Outlook day to all those who celebrate. Here's your annual reminder about what the different scenarios mean (journalists and sub-editors: looking at you in particular).

James Murray@james-bg.bsky.social · 10mo ago

Wonder if Starmer will find room in his speech to acknowledge the objective fact a century of escalating climate impacts means global migration will massively increase. We either find a way to effectively and humanely manage that fact, rather than deny it, or things will get very dark very quickly.

Jonathan Green@greenj.bsky.social · 11mo ago

To journalists various: the issue is not whether the coalition tears itself apart over climate denialism… the issue is whether we do what we can to save our home. Stop reporting the goddam horse race.

Voices of Wentworth@voicesofwentworth.bsky.social · 11mo ago

Climate Risk Assessment Report: 💀 400% increase in heat deaths 🔥 1m homes uninsurable by 2050 🥵$211 billion in lost wealth from reduced labour productivity. Uninsurable means unsellable, means ppl lose wealth, reduced tax revenue & economic recession for all www.abc.net.au/news/2025-09... #auspol

One million homes at 'very high risk' will be effectively uninsurable by 2050

One in 10 homes could be effectively uninsurable by 2050, while lost labour productivity to extreme weather could wipe $211 billion in household wealth, the Climate Risk Assessment warns, with tourism...

abc.net.au

Voices of Wentworth@voicesofwentworth.bsky.social · 11mo ago

At what point are we going to realise that the wealth we will lose from reducing fossil fuel exports is trivial compared to the wealth we will lose from pumping all that CO2 into the atmosphere? Will it be too late by then? www.abc.net.au/news/2025-09... #aupol

What happens to Australia when the world warms by 3C? It's revealed in this report

For the first time, the government has modelled the threats from climate change on Australia's future. What’s the point of a document like this, and can it help us avoid the worst-case scenarios?

abc.net.au

Helen Haines MP@helenhainesindi.bsky.social · 11mo ago

These findings are alarming, but not surprising. Regional Australia is depending on strong climate action. The Government’s carbon emission targets must reflect the severity of the findings released yesterday. www.abc.net.au/news/2025-09...

First climate risk assessment finds 1.5m Australians at risk from sea level rise by 2050

One and a half million Australians are at risk from sea levels rising by 2050 unless climate change can be limited, Australia’s first national climate risk assessment warns.

abc.net.au

Alison Reeve@reevealison.bsky.social · 11mo ago

Re-upping this thread following the National Climate Risk Assessment and the latest LNP ructions. If you want to aspire to any leadership position in this country, you must have a serious, coherent plan to respond to climate change. That's table stakes.

Alison Reeve@reevealison.bsky.social · last yr.

I am going to quote-post every part of this thread, and substitute "LNP" for "Tories", because we are seeing the same tired, bad arguments play out in the same way. Thanks you James for articulating is so well. 🧵⬇️

Dr. Jonathan Foley@globalecoguy.bsky.social · 11mo ago

"Each year, nuclear adds as much net global capacity as renewables add every two days. Soaring renewables generate three times more global electricity than stagnant nuclear... …China added 197 times more solar and wind than nuclear capacity, at half the cost." www.utilitydive.com/news/nuclear...

Nuclear power is failing, and AI can’t rescue it

Nuclear generation is expensive and slow to develop. Claims that past failures won’t recur have convinced politicians to socialize investments rejected by private capital markets.

utilitydive.com