How dependent is France on Niger's uranium?
How dependent is France on Niger's uranium?
The military coup in Niger has raised concerns about uranium mining in the country by the French group Orano, and the consequences for France's energy independence.
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@MattMastodon @Sodis Careful about labels. »Renewables« often includes biomass (which is just fast-track fossil tbh) and hydro (which is not so volatile). I'm talking about wind and solar specifically (volatiles).
40% is roughly the mean capacity factor of a good mix of volatiles. This is what you can directly feed to the user from the windmill/panel, without storage. You can expand a bit by massive overbuilding, but you can't overbuild your way out of no wind at night.
Mostly we don't use energy at night. In the UK there is a peak in the morning. In the UK we mainly use gas to fill this. We will have to find a storage solution as nuclear can't be upscale that quickly. Gas was meant to be used just to fill the gaps but it's quickly become a staple.
We need to find a way of smoothing the graph. Energy storage is the best option in the short term.
Or we can vary use.
@MattMastodon @Sodis Again: that demand is lower at night is already factored in. Roughly 40% of demand can be directly met by volatile sources. You may think nuclear is slow to deploy, but it's still much faster than anything that doesn't exist.
The gap is 60%. Gas is a fossil fuel. Varying use is mostly a euphemism. If you hurt industry, you won't have the industry to build clean energy sources.
Wind power is hardly new technology.
And let's say we treble wind power and solar and add battery and hydro storage we can upscale our energy mix to meet demand. And continue to reduce demand.
The amazing thing about this is for most of the time we will have a superabundance of energy. So energy on most days will be crazy cheap.
Our industries can use the energy at superlow cost. We could have free energy days where charging your car or washing is free.
I struggling to find anywhere that convincingly shows #nuclear is cheap compared to #renewables. There's references to cheap 'running cost' but this probably doesn't include construction and disposal costs. The main costs tbh.
And then there is the fact that uranium comes from #Russia or #Niger.
@MattMastodon @Sodis If you include construction and disposal (and transport and so on…) it is called lifecycle costs. First image shows that per energy produced (sorry german, »AKW neu« is new-built nuclear).
Uranium comes from all over the world. Second image shows the situation a few years ago. Niger is place 5, Russia place 7.
The cost is £106/MWh in 2021 for Hinkley Point, the #nuclear powerstations in the UK but it's indexed linked (goes up with inflation) so. Is higher now, and only starts when the reactor goes live in 2028 (estimated) .
The reactor was going to cost £23,000,000,000 but this has jumped to £33,000,000,000 and there is a suggestion (Reuters) that it will jump again to nearer £40,000,000,000.
To me this seems expensive #energy when #renewables can cost £50/MWh. At the moment.
@MattMastodon @Sodis We're going in circles. Volatile sources can only supply 40% of current demand for £50/MWh. The question is what fills the rest.
If storage, then the price goes up immediately by at least two conversion losses from/to storage, in addition to the cost of storage itself. Which doesn't exist at the needed scalability.
Pointing to single projects is not meaningful, as we need to build a fleet anyway, which has its own dynamics.
OK so I have googled the men capacity factor and of course #nuclear has nearly 100% and #renewables only 40%.
But this just means it produces on average 40% of it's capacity. You'd need a sunny windy day to get 100%
What I've read about is a #SWB (Solar wind and battery) system with massive overcapacity
So biomass, hydro and battery can take up the slack when needed. Or gas - which has a very low mean capacity factor <10% but is usually used as a last resort
Well you haven't explained the 40% or I've not understood you.
The fact remains the Hinkley, my local #nuclear reactor is turning out to be very expensive.
This, will make it hard for any government or investor to put the case for a second #reactor, let alone a slew of them. After all, if #EDF can't deliver, who can?
And #renewables only get cheaper.
I get the point about #batteries but batteries are great at smoothing sharp peaks in demand. Everyone making tea at 8am...
I'll try to explain the 40%, sorry for the parts that you already know.
Electric energy is always produced at the same time (and »place« roughly) as it is consumed. (You can't pump electricity into some reservoir to be consumed later, you always need a different energy form for storage.)
The problem with volatile sources is that they mostly (more than half) produce energy at the wrong time and/or the wrong place, and at other times produce nothing.
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