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Cristian Padureac

@cristoforestman.bsky.social

pedestrian focused urban fabric, good public transportation, bike infra and nuclear power+ren are the way forward for deep decarbonization

684 Followers  |  161 Following  |  829 Posts  |  Joined: 02.01.2024  |  2.5424

Latest posts by cristoforestman.bsky.social on Bluesky

Right now both should be expanded. It's not either. Again, if you don't plan firm power ahead you'll end up building gas because it's faster and too late. Even Norway understands this, hence they want nuclear too

26.08.2025 16:00 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Production is adapted each year. 2025 had 13% increase vs last year

26.08.2025 15:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That's true. So you deploy different tech to alleviate this problem.
The situation also looks very different in the magnitude - it's extremely rare to get all nuclear fleet down to 5-10% production at the same time. Especially when you have more units (hence smaller reactors do have a benefit here)

26.08.2025 15:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

So again, wind is nice and should be expanded where it makes sense, esp to avoid some drought problems like Norway has faced. But you still need more firm power. If you don't start planning for nuclear now, gas will be planned later because it's too late to plan for nuclear

26.08.2025 14:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

And that's based on a day GWh average. The actual production in that day in some timeframes could have been even lower. On first febr offshore CF in Germany was about 3.6%. in 19Feb- 2.2%. these are daily averages so min production could have been worse (I don't have per hour data sadly)

26.08.2025 14:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Last year's winter, cumulative wind+solar CF in the whole EU dropped significantly for 2-3 days several times.
It's hard to find data for Sweden, but say for DK on 5-7 november offshore generated at about 4-8% (1-2GWh vs 2.7GW installed). In Germany it was similar with 6% for offshore those days

26.08.2025 14:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

On the other hand I'm optimistic about BWRX timelines. Both Sweden and Hitachi have great BWR experience and BWRX is similar in many ways to ABWR that was already built in the past. They have all the chances to beat EDF in this by a mile

26.08.2025 13:10 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nuclear rises the bar by 1GW. Offshore can still play along with hydro modulation and help with droughts, but you no longer have supply issues. And rather than waiting when demand reaches 5GW(hypothetical) you better start building nuclear when peak demand is still 2-3GW considering delays

26.08.2025 13:08 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Offshore wind will not solve the lack of firm power. It can help for drought periods to save hydro and sometimes reduce gas. But if your total demand rises to say 5GW and hydro can output 4GW at max and wind is operating at 1%CF due to weather, you are screwed unless you ration or import

26.08.2025 13:06 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sweden still doesn't have alternative clean firm power. Hydro can be boosted but nordics in general don't want to extend it too much due to environmental concerns. If peak demand grows and wind isn't blowing, telling people to wait isn't an option. Better start building now than waiting

26.08.2025 11:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Low-carbon technologies need far less mining than fossil fuels Mining for coal is much more resource-intensive than renewables or nuclear power.

Yes if EU wants to ditch gas for firming.
Yes if countries want less transmission expansion
Yes if countries care about material/mining amount ourworldindata.org/low-carbon-t...
Or environmental impact unece.org/sites/defaul...

26.08.2025 10:20 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Recycling is sadly banned in US under any form

26.08.2025 06:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

10% of french power is from recycled MOX from Orano la Hague. They also tested REPU last year
Heck, France even had a reactor designed to work on nuclear waste called Superphenix which was closed under greens pressure. Because of that nowadays only Russia has a big working fast reactor

26.08.2025 06:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
What are the safest and cleanest sources of energy? Fossil fuels are the dirtiest and most dangerous energy sources, while nuclear and modern renewable energy sources are vastly safer and cleaner.

It's pretty safe despite of them ourworldindata.org/safest-sourc...

And despite it not being renewable, it still requires least mining ourworldindata.org/low-carbon-t...
And has lowest environmental impact unece.org/sites/defaul...

26.08.2025 06:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
What are the safest and cleanest sources of energy? Fossil fuels are the dirtiest and most dangerous energy sources, while nuclear and modern renewable energy sources are vastly safer and cleaner.

It is good ourworldindata.org/safest-sourc...

26.08.2025 06:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Not in France. It actually proved to be the best one

26.08.2025 06:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That's a different thing. Twh will not change much if peak demand grows by some hours but you still need to cover it

26.08.2025 05:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

300gw is unrealistic imo
Solar is nice and should be added too, but isn't firm. There's a reason big tech hopes nuclear works- buying carbon credits like before becomes challenging since amount of firm power is limited

26.08.2025 04:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

But it exemplifies what you can do in a series build- you start a new unit 1y after prev one and continue this till you are done. But this requires tons of effort and maybe govt intervention similar to messmer

25.08.2025 20:28 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

They had about 8y per units, 12 total. Each unit 1400MW. That's not fast compared to chinese deployments, french messmer ones and even more so-japanese abwr

25.08.2025 20:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

But in their case it took bit longer per unit

25.08.2025 20:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

You can have one team and move subteams on different sites once their phase is done. That's how you do series deployment. If you want 10 units, 5y each, with team movement, you get 15y total.
Kinda similar to how Barakah was built

25.08.2025 20:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I think this shrimp is from Indonesia

25.08.2025 19:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Utah should better talk to Hitachi

25.08.2025 19:18 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It was figured out with AbWR. The question is why Vogtle picked AP1000 foak instead of ABWR noak that was a proved design

25.08.2025 19:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It is. Fk wastewater has tritium at levels below WHO limit.

We can speculate, but CS137 is usually used for food decontamination among other usecases like medical sector. My bet is either on that or nuclear weapons testing era

25.08.2025 19:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Basically they installed a new equipment that performed so well that after tests they found out other equipment must be replaced too to work in sync

25.08.2025 15:47 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

You should ask the same question about forever toxic chemicals, some coming from renewables, that must be stored forever. The same solution applies for nuclear

25.08.2025 15:36 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Chasing the wind: The value of wind generation in a low-emission nuclear and hydro-dominant grid – the case of Ontario[1] - Energy Regulation Quarterly INTRODUCTION This paper provides a cost-benefit assessment of wind generation in Ontario, Canada for the 2020–2023 period and on a forward-looking basis for the 2027–2030 period. Our work is based on ...

Ontario was already burnt with alternative pathway energyregulationquarterly.ca/en/articles/...
Nothing bad in trying something else

25.08.2025 06:45 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

If peak demand rises ren alone will not be enough and gas will be expanded.

25.08.2025 06:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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