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Reposted by Nick Greenacre

Larry the Cat @number10cat.bsky.social · 13/03/2026

The Strait of Hormuz is perfectly safe...

Nick Greenacre @nicknet.bsky.social · 12/03/2026

Unfortunately the price of electricity is set by the marginal price of gas. So even when the supply in mostly low carbon, the market price is set high.

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Jesse @ember42.bsky.social · 18/01/2025

Should we be setting a climate action level target like we set a NATO defense spending target? Say a target of 2% of GDP. As a security issue the same as the defense spending target? #energysky

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Technology Connections @techconnectify.bsky.social · 12/01/2025

I've been trying to understand why I feel the particular flavor of distressed that I do right now. I think it's because we can no longer discuss the lessons we should be learning from any kind of disaster without the worst chucklefucks coming out of the woodwork to wreck everything.

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Nick Touran @whatisnuclear.com · 11/01/2025

People often say that breeder reactors "make more fuel than they consume". I think a wood stove analogy is more intuitive: "They ignite more logs than they need, so you can go start other fires". Regular reactors burn kindling (U-235). Breeder burn logs (U-238 or Th-232).

Squares of Uranium-238, Thorium-232, and a little bit of U-235, showing that there's a lot more fertile fuel than fissile.

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Nick Greenacre @nicknet.bsky.social · 09/01/2025

Don't they just tot up and charge [n]kWh for each tariff?

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Nick Greenacre @nicknet.bsky.social · 09/01/2025

I only use two of three phases in my office, I just pay the sum total + service charge.

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Nick Greenacre @nicknet.bsky.social · 09/01/2025

Unless I'm missing something the total power in/out is unchanged.

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Nick Greenacre @nicknet.bsky.social · 09/01/2025

But each phase is metered separately on one tariff/bill isn't it? Don't they just Tott up the totals in/out and add a service charge?

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Nick Greenacre @nicknet.bsky.social · 09/01/2025

What are you measuring that from/t?

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Doug Parr @dougparr.bsky.social · 08/01/2025

The irony of a climate-change fuelled disaster hitting the US West Coast as a new climate sceptic administration takes charge of America will be lost on few people in California, but likely all of those assuming power in Washington www.fastcompany.com/91256483/the...

fastcompany.com

The horrifying L.A. wildfires are being fueled by the worst conditions January has ever seen

Southern California is experiencing a midwinter drought at the same time as dangerous Santa Ana winds, leading to a wildfire in the Pacific Palisades.

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Nick Greenacre @nicknet.bsky.social · 07/01/2025

Does it matter that much? For most situations, surely it's just a passing demand reduction for the phase/building.

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Doug Parr @dougparr.bsky.social · 07/01/2025

Look how far UK has to go to get housing stock to low-C heating compared to Europe Numerous barriers incl (dis)information, up-front cost, running cost, local strategies Upcoming Warm Homes Plan needs....a plan Thanks to @benmsanderson.bsky.social for flagging graphic www.ehpa.org/market-data/

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Nick Greenacre @nicknet.bsky.social · 31/12/2024

UK costs include transmission, European costs tend not to.

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Nick Greenacre @nicknet.bsky.social · 31/12/2024

Probably, but the further offshore the better the cf. ... and deeper with longer cables and the complexity of offshore substations and HVDC.

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Nick Greenacre @nicknet.bsky.social · 31/12/2024

That ballpark. Considerably less than the latest floating offshore and tidal plant, and with a lower system overhead. www.gov.uk/government/p...

gov.uk

Contracts for Difference (CfD) Allocation Round 6: results

Outcome of Contracts for Difference (CfD) Allocation Round 6 which commenced on 27 March 2024.

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Nick Greenacre @nicknet.bsky.social · 30/12/2024

Yes, it's circa 21g CO2/GJ for LNG compared to ~5g for conventional natural gas.

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Nick Greenacre @nicknet.bsky.social · 30/12/2024

£20bn overnight cost/26TWh pa over the lifetime.

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Nick Greenacre @nicknet.bsky.social · 30/12/2024

This is terribly sloppy journalism. EDF had zero involvement in UK nuclear in 2007, and they're a supplier, not the customer so it's not their decision. HP-C wasn't even shortlisted until 2012. It was ordered in late 2016. And you're ignoring the fact that that main delay was the pandemic.

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Nick Greenacre @nicknet.bsky.social · 30/12/2024

Based on the figures in the article.

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Nick Greenacre @nicknet.bsky.social · 29/12/2024

[insert Mandy Rice-Davis quote] Let's not forget that the price/kWh is still significantly lower than our tidal and floating offshore wind.

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Andrew G. Benson @a-g-benson.bsky.social · 29/12/2024

Nuclear power is the best source of electricity if you care about preserving scenic vistas.

Chart comparing land use between different sources of electricity. Visit https://ourworldindata.org/land-use-per-energy-source for a detailed explanation.

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Gniewomir Flis @gnievchenko.bsky.social · 28/12/2024

BloombergNEF recently revised it's green hydrogen cost projections. $1/kg H2? Forget about it. Already $2/kg is a stretch, even for China and India who don't reach it until 2040. Worth noting these are average costs tho. There will be exceptional projects that will outperform.

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Nick Greenacre @nicknet.bsky.social · 27/12/2024

A cheap 'lemon' with 70% capacity may be a good investment for people doing the school run or city driving.

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Technology Connections @techconnectify.bsky.social · 25/12/2024

Merry Christmas! And many warm greetings to Bluesky - y'all are the reason I turned my idea into reality. youtu.be/kTctVqjhDEw

youtu.be

I tricked my car charging station into powering a 7.5 kW heater

YouTube video by Technology Connections

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Aaron Stoll @aaronstoll.bsky.social · 24/12/2024

We need to build more transmission, this is obvious. But what I think a lot of people overlook is the fact that even if we build more tx, we still need to completely overhaul the interconnection process. The current process does not make any sense for a high renewable penetration grid

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Xiao Wang @xiaowang1984.bsky.social · 24/12/2024

A really interesting study on cold weather heat pump COPs, including at max thermal capacity where the temperature is recovering. The setup where they look at an electric heater and achieving temperature balance in a cold box was pretty elegant too. www.nrel.gov/docs/fy23ost...

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Nick Greenacre @nicknet.bsky.social · 24/12/2024

Surely I'm not alone in that Glenne?

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

Lest we forget that Labour 'voted' (with 'encouragement' of the hard left Momentum bro's) to not* oppose Brexit. youtu.be/5BRH8VZP8KA?...

youtu.be

Chaotic scenes as Labour delegates reject plan to back remain

YouTube video by Guardian News

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Siobhan Thompson @vornietom.bsky.social · 21/12/2024

We have entered the season of no meal rules. Dessert is breakfast. Dinner is lunch. A snack is an entire honey-mustard ham

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

There's no shortage of lessons in Flamanville for nuclear proponents, but nuclear opponents should also take heed of the IPCC who have nuclear in all successful 1.5-2°C mitigation pathways through 2100. www.ipcc.ch/report/ar6/w... There is no 'renewables only' climate objective. Only Carbon matters.

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

To this end EDF/Framatome have learned and redesigned the EPR so it should be cheaper (and faster!) to build. And finally. There's no rule that reaching net zero will save money. We have to be prepared to invest heavily.

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

My admittedly long winded point is that these are constructor issues, not design or technology issues. As constructors 're learn' the skills we had in the 1980's then the build time will tend to even out.

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

- Nationalised industries being what they are, EDF & AREVA couldn't be seen to be giving the order to a foreign supplier (such as UK-Sheffield Forgemasters) for a plant in France (Flammanville) -and so despite it being the limit of their capacity, the order went to le Creusot

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Nick Greenacre @nicknet.bsky.social · 22/12/2024

The story here isn't so much about nuclear as it is politics & business. When the EPR was specified, AREVA designed it to significantly exceed every European regulatory requirement. Part of that was that the (unusually large) pressure vessel would be made from as few individual forgings as possible.

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Nick Touran @whatisnuclear.com · 21/12/2024

The Fuel of the Future: a 1964 film about how the Argonne National Lab fabricated plutonium fuel for the Experimental Breeder Reactor-II. Utterly fascinating footage! www.youtube.com/watch?v=93Ef...

youtube.com

The Fuel of the Future: Making Plutonium Fuel for EBR-II (1964)

YouTube video by What is Nuclear?

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Jesse D. Jenkins @jessedjenkins.com · 20/12/2024

This is probably the most important story of year in the energy transition. ~600 gigawatts of new solar added to world grids today. That will produce ~1,000 terawatt-hours of clean electricity, or ~25% of all US electricity use or 2/3 of India's. In one year! Simply massive & it's accelerating. 🔌💡

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David Roberts @volts.wtf · 20/12/2024

Today on Volts: I talk with the developer of the nation's largest virtual power plant, composed of hundreds of thousands of smart thermometers controlling residential HVAC systems in Texas. We get into customer experience, data privacy, & the outer limits of VPPs. www.volts.wtf/p/the-promis...

volts.wtf

The promise of residential VPPs

How Renew Home is building a massive virtual power plant by tapping into millions of smart thermostats that are already in people's homes 🏠⚡️

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Gniewomir Flis @gnievchenko.bsky.social · 14/12/2024

Buying green hydrogen in the UK today will set you back *at least* £30/kg H2. Real quotes from suppliers. Sure it’ll get cheaper with time but you can kiss £4/kg goodbye before 2035.

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Nick Greenacre @nicknet.bsky.social · 19/12/2024

Interesting smallprint on that chart.

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Nick Greenacre @nicknet.bsky.social · 18/12/2024

I did. I said "I think we need distributed generation regardless" We do. Deal with it.

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Nick Greenacre @nicknet.bsky.social · 18/12/2024

If i said no, you'd immediately come back with a claim that it proved I'm opposed to solar. And I'm not.

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Nick Greenacre @nicknet.bsky.social · 18/12/2024

If you genuinely mean that, then I freely admit it's beyond my ability /and/or/ time /and/or/ character limit to do that for you.

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Nick Greenacre @nicknet.bsky.social · 18/12/2024

No, you asked one question (answered yes) and added a conditional reason to it that I don't agree with. Cheap trick.

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Nick Greenacre @nicknet.bsky.social · 18/12/2024

"for some reason you said "it doesn't really help with the demand profile"" It's interesting that you went to the effort of rewriting what I said. Was that just so you could claim the point (UK lowest solar insolation and highest grid demand) was ambiguous? bsky.app/profile/nick...

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