Engineer, technologist & energy trader.

Joined May 2012
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The case for Nuclear in Ireland - I am starting this thread here because there are so many people calling for it now with no idea of what they are talking about. The cost & construction time for nuclear plants is so onerous, the companies involved usually go bust along the way
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Peter Brennan retweeted
Communist Professor: “Well, jihadist violence is a complex phenomenon shaped by a constellation of interacting factors, including geopolitical instability and foreign military interventions, authoritarian repression and weak state institutions, local grievances and socioeconomic marginalisation in conflict zones, and transnational ideological narratives that are amplified through networks and recruitment ecosystems.” Also Communist Professor:
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Peter Brennan retweeted
Chinese generation by cost $/MWh ☀️ Solar PV 24-38 🌬️ Onshore wind 26-45 💧 Existing hydro 30-60 🌊 Offshore wind 55-80 ⚛️ Nuclear 60-90 🏭 Coal (USC) 70-86 🔥 Gas 90-120 Little wonder 90% of all new capacity additions in China is now wind and solar.
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Peter Brennan retweeted
Die Absurdität der selbstverschuldeten Transformation Es ist eine der großen Ironien unserer Zeit: Millionen Menschen fliehen aus islamisch geprägten Ländern in den Westen, weil dort Wirtschaft, Freiheit und Zukunftsperspektiven miserabel sind – oft als Folge von Korruption, Clanstrukturen, religiöser Bevormundung und fehlender Innovationskultur. Sie suchen genau das, was sie zu Hause nicht hatten. Doch darin liegt die Absurdität: Je größer ihre Communities im Westen werden, desto stärker verändern sie die politische Landschaft. Westliche Politiker, getrieben von Wahlarithmetik, werden abhängig von diesen Stimmen und passen ihre Programme immer mehr an die Forderungen der neuen Wähler an – zulasten der einheimischen Bevölkerung. Das Ergebnis ist vorhersehbar und tragisch: Die Probleme, vor denen die Migranten geflohen sind, werden langsam importiert. Aufstieg durch Leistung, säkulare Freiheit und Rechtsstaatlichkeit weichen zunehmend No-Go-Zonen, hohen Sozialkosten, sinkenden Bildungsstandards und wachsender religiöser Einflussnahme. Am Ende steht die bittere Pointe: Die Menschen verlassen gescheiterte Gesellschaften – und reproduzieren durch ihre bloße Präsenz genau jene Bedingungen, vor denen sie fliehen wollten. Der Westen importiert nicht nur Menschen, sondern auch die archaischen kulturellen Vorstellungen, Geschlechterrollen, Homophobie, Antisemitismus und institutionellen Defizite ihrer Herkunftsländer. Wer das kritisiert, weil es nicht in das Schema der Parteien passt, gilt schnell als „rechts“. Die eigentliche Absurdität aber liegt darin, dass ein Kontinent, der jahrhundertelang für seine Errungenschaften bewundert wurde, freiwillig den Weg in die eigene Dekadenz beschreitet – nur um nicht „intolerant“ zu wirken.
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Peter Brennan retweeted
Replying to @tomhfh
A reminder Blair’s cheap energy solutions are More Nuclear currently £140-160/MWh New Gas with CCS £160/MWh The last AR7 round was Solar £65 Wind £72 Offshore Wind £91
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Peter Brennan retweeted
Proximity to nuclear power plants was associated with elevated mortality from breast, colon, and lung cancers. From 2000 to 2020, an estimated 39,767 female deaths (95% CI: 9312–69,381), representing 2.01% (95% CI: 0.47–3.50%), and 38,124 male deaths (95% CI: 16,106–59,600), representing 2.33% (95% CI: 0.98–3.64%), were attributable to this proximity. Lung cancer accounted for the largest burden in both sexes, followed by breast and colon cancer in females and colon cancer in males. Mortality risks declined with increasing distance, becoming negligible beyond 50 km. Nature 20th May 2026 nature.com/articles/s41370-0…
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Peter Brennan retweeted
Replying to @aimeeterese
Social media has essentially supercharged this exact dynamic. It rewards narcissists with endless dopamine hits for performative outrage and moral superiority, turning politics into a nonstop supply of validation. Leftists don’t need consistent beliefs when a platform constantly affirms their unearned right to rule and punishes anyone who won’t submit. Straight white males who resist the groupthink become the ultimate threat- they don’t feed the retarded fragile ego machine. What we’re seeing isn’t ideology, it’s narcissism optimized by algorithms.
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Peter Brennan retweeted
Liberals use third party middle men as agents of destruction to wreck everything & everyone they resent. The third party middle men they frame as pitiful, needy victims are actually lawbreaking malcontents & aggressors eg illegal immigrants, criminals, transsexuals, rioters etc
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What about nuclear waste & decommissioning costs. How safe is nuclear? Starting a thread on this in response to the v foolish calls for Ireland to go nuclear. This is an issue the industry likes to hide & kick the can down the road on. To give you an idea of how horrendous
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just 70MW. To put that into context, an average nuclear reactor is about 1,000MW. A typical nuclear plant would have several reactors. Thought the plant stopped operating in 1990 and decommissioning began shortly afterwards. More than thirty years later, that work is
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still unfinished with full decommissioning now expected to be around 2040, with costs estimated at over €1bn. Wow!
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How safe is nuclear? Starting a thread on this in response to the v foolish calls for Ireland to go nuclear. The biggest concern about Nuclear power is rarely mentioned - There are some 440 nuclear plants in the world. How safe are these plants in a climate change world?
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production due to low river water levels. The latter  make the plants prone to tripping in hot weather. Even after nuclear plants are turned off the reactor has to be kept cool for years afterwards to stop it over-heating (the current situation in Zaporizhzhia). Nuclear plants
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typically have a lot of radioactive material stored on site in spent fuel ponds and these will need to be managed for many thousands of years into the future.
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Peter Brennan retweeted
Solar, wind & batteries are beginning to do what critics claimed was impossible: Push national electricity prices DOWN at country scale. Spain may be one of the first major real-world examples of the new energy system structurally undercutting fossil-driven power markets. #SWB Their wholesale electricity market is rapidly becoming one of the clearest signals yet that the energy transition is no longer theoretical. It is now materially reshaping price formation at national scale. In Jan-Apr 2026, Spain recorded some of the lowest wholesale electricity prices in Europe at roughly €44/MWh. For comparison: • Italy: ~€127/MWh • Germany: ~€96/MWh • UK: ~€103/MWh The shift is being driven by a massive expansion of low-marginal-cost renewables. Wind solar now supply roughly 44% of Spain’s electricity generation, while fossil generation has fallen sharply. Most importantly, gas plants reportedly set the wholesale market price in only ~9% of hours, down from ~55% in 2022. That is the real inflection point. What we appear to be witnessing is one of the first major real-world examples of electricity prices falling at country scale due to the aggressive scaling of solar, wind and batteries. Not just isolated hours. Not temporary oversupply events. But structural downward pressure on wholesale electricity markets. The old energy system depended on expensive gas generation frequently sitting at the margin and effectively dictating electricity prices across the market. But once solar and wind become large enough: • gas runs less often • peak pricing weakens • wholesale clearing prices compress • fossil volatility loses influence This is the merit-order effect now playing out at country scale. And batteries are only beginning to enter the equation. Spain’s battery storage capacity is ramping rapidly, helping absorb cheap midday solar, reduce curtailment, and increasingly shift low-cost electricity deeper into evening demand peaks. Critics long argued high renewable penetration would inevitably make electricity more expensive due to intermittency, backup requirements, and system instability. Yet Spain is increasingly demonstrating the opposite: More clean energy can structurally suppress wholesale electricity prices while reducing exposure to imported fossil fuel volatility. This does not mean the transition is “complete.” Retail electricity bills still include taxes, transmission, distribution, and policy costs. Evening price spikes still occur. Flexibility, storage and transmission expansion remain critical. But the broader signal is becoming harder to ignore: Spain may ultimately be remembered as one of the first places where the new energy system began visibly undercutting the old one economically.
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Peter Brennan retweeted
Replying to @pulse_carbon
Max infeed size per TSO code [ EirGrid ] is currently at ~ 700 MW - same as France IC - a 1600 MW EPR or similar single large Nuclear unit would collapse the grid on tripping. Also existing 400 kVA lines would need a massive upgrade involving the whole Irish grid to handle GigaWatt-scale nuclear install . 300 MWe*4 SMRs is likely max at e,g Moneypoint ( rated 915 MW ) but renewables now taking a big chunk of this 400 kVA line so it may be limited to 2 @EirGrid may wish to respond ?
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Peter Brennan retweeted
En Italia hay una idea hermosa llamada “el placer de no hacer nada”. Sentarse en calma, beber tu café y vivir el momento sin prisas. Un recordatorio simple: a veces el descanso en sí mismo es la felicidad.
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Peter Brennan retweeted
30 myth-busting short videos about transitioning to 100% renewables and the electrification of everything - from mining to land use to electricity prices to grid reliability - in the middle of this link web.stanford.edu/group/efmh/…

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