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On 4/07/2024 7:58 pm, The Natural Philosopher wrote:Ity is not massive.On 04/07/2024 10:06, alan_m wrote:But you are happy to ignore the massive costs of providing secure storage for nuclear waste for the hundred's of thousands of years it take for the longer half-life isotopes to decay into stable isotopes.Another half truth by the industry. It's only cheaper when it works and if you ignore the backup required for when it doesn't and the extra infrastructure costs required to distribute it.>
It isn't even cheaper then.
Some of us have run the numbers...
>
Per gigawatt a wind turbine is cheaper than a nuclear power station but that ignores
- the shorter lifetime of the windmill
- the capacity factor of the windmill
- the massive maintenance cost associated with a windmill.
Of course it isBefore you even get into the ancillary crap needed to attempt to make a silk purse out of a pigs ear...It's actually a sow's ear. And a nuclear power station is no silk purse.
If you want a flexible power source, a nuclear power station isn't an option.
"The ability of a PWR to run at less than full power for much of the time depends on whether it is in the early part of its 18 to 24-month refuelling cycle or late in it, and whether it is designed with special control rods which diminish power levels throughout the core without shutting it down. Thus, though the ability on any individual PWR reactor to run on a sustained basis at low power decreases markedly as it progresses through the refuelling cycle, there is considerable scope for running a fleet of reactors in load-following mode. European Utility Requirements (EUR) since 2001 specify that new reactor designs must be capable of load-following between 50 and 100% of capacity with a rate of change of electric output of 3-5% per minute. The economic consequences are mainly due to diminished load factor of a capital-intensive plant."Old tech. You can design a reactor to load follow, but it doesn't make best use of capital when you have any hydro
Gas turbine power generators are much more flexible, and pumped and battery storage is even more flexible.Battery storage is to replace the spinning mass of conventional turbiunes,. It has absolutely no ability to keep a solar grid up overnight, or w wind grid operational in a flat calm
You can need quite a bit of it, but that gets figured into price of renewable energy, even if you aren't aware of it.
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