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> No nuclear fleet drops to 5% capacity for weeks at a time like solar or wind Source? Reality: a continental mix production is way less variable. > The nucl

• realusername 2y ago
  > Source? Source of what? That nuclear doesn't drop to 5%? It never happened so I can't get any source... > I referenced proofs showing this is insufficient. Well, it works in reality so the proof is in the pudding, it works. > Nope. Source? The Germans even have a word for that, Daunkelflaute https://cdn.prod.website-files.com/65b3e159d25a6097b6ca5815/665d743202efe9d670c60172_Dunkelflaute_Germany_2023.png https://cdn.prod.website-files.com/65b3e159d25a6097b6ca5815/... > Batteries already are ( https://www.nytimes.com/interactive/2024/05/07/climate/batte https://www.nytimes.com/interactive/2024/05/07/climate/batte... Well no they aren't, they are used for very low scale grid management, such as stated in your link. > What do you mean? Electricity cannot be stored?! No it can't in large scale, those battery needs to make a x100 here to be used for that. The only large scale tech to store electricity are dams. > Brennilis (1981, 1981, 1996), Dirinon (1981), Gennevilliers (1991), Vaires-sur-Marne (2008, 2009), DK6 (2005)... The only exisitng gas plant stil used before 2010 is DK6 and it's not even connected to the gas pipeline but reusing factory gas. https://fr.m.wikipedia.org/wiki/Liste_des_centrales_thermiques_%C3%A0_flamme_en_France https://fr.m.wikipedia.org/wiki/Liste_des_centrales_thermiqu... All the other existing gas plants in France were built post 2010 for renewables. > We are far from this as France is notoriously way behind, partly because it wastes money on nuclear late-and-overbudget projects (EPR...). France spent more than a hundred billions on new renewables alone (roughly half of the total cost of the nuclear grid). It's true that the results look even worse than the EPR though. And it's not counting these new gas plants and external costs on the nuclear grid in the total. The renewable investments look so bad that there's people like you who think they haven't been done but they have. There's multille reasons France is bring the nuclear program back from the dead and one of them is that the renewable investments underdelivered. > In France RTE is in charge of the grid (less the "last kilometer") and is a subsidiary of EDF (electricity producer, head of the nuclear sector. RTE benefits from grid investments for renewables so yeah it's not a surprise they are all for it. They are especially afraid of a merge to go back to the previous statu quo. Remember that big hole in the production on the graph before? That's exactly the time where the president of RTE made a public speech for building renewables, when they produced closed to nothing.
  • natmaka 2y ago
    You wrote that "solar and wind" can drop "to 5% capacity for weeks at a time", and I ask for the source of this, in order to check that if, contrary to all scientific studies, it is true for a mix (wind, solar...) deployed on whole continent. Guess what? It isn't! Check "How synchronous is wind energy production among European countries?" (Monforti, Gaetani, Vignati). This is also true in China (check Liu, Xiao Wang, Dai, Qi "Analysis on the hourly spatiotemporal complementarities between China's solar and wind energy resources spreading in a wide area") and America ("Is it always windy somewhere? Occurrence of low-wind-power events over large areas" (Handschy, Rose, Apt).) > Daunkelflaute It's "Dunkelflaute" (only one 'a') "a single event usually lasts up to 24 hours" and "more than two days over most of Europe happen about every five years" (source: https://en.wikipedia.org/wiki/Dunkelflaute https://en.wikipedia.org/wiki/Dunkelflaute ), here is for your "weeks at a time". Moreover regions outside North of Europe are way less impacted. > are used for very low scale grid management And what exactly forbids to manage all local grids this way? This is more and more true, as being able to isolate a local grid is useful. > The only large scale tech to store electricity are dams As of 2022, the total combined energy capacity of electric vehicle (EV) batteries sold in Europe reached approximately 690 GWh, and grows very quickly. Note: dams are a renewable source. > The only exisitng gas plant stil used before 2010 It is about fossil fuel, and factually the French nuclear fleet always used some: https://ourworldindata.org/explorers/energy?Metric=Share+of+total+generation&Total+or+Breakdown=Select+a+source&Energy+or+Electricity=Electricity+only&Select+a+source=Fossil+fuels&tab=chart&country=~FRA https://ourworldindata.org/explorers/energy?Metric=Share+of+... > hundred billions on new renewables alone With a clearly promising result: https://ourworldindata.org/grapher/electricity-fossil-renewables-nuclear-line?time=2002..latest&country=~FRA https://ourworldindata.org/grapher/electricity-fossil-renewa... > (roughly half of the total cost of the nuclear grid) This is highly debatable as the real total cost of the nuclear fleet is disputed. Remember: EDF's debt now surpasses 50 billion €... > It's true that the results look even worse than the EPR though Source? Reality: the French EPR should have started around 2012 and didn't (right now) did so, while https://www.iea.org/reports/renewable-energy-market-update-june-2023/how-much-money-are-european-consumers-saving-thanks-to-renewables#abstract https://www.iea.org/reports/renewable-energy-market-update-j...