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Grid matters

dspp
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Re: Grid matters

#394627

Postby dspp » March 11th, 2021, 2:12 pm

Climate change and US grid (with thanks John Kemp Reuters)

https://www.gao.gov/assets/gao-21-423t.pdf

fairly applicable to most grids,
dspp

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Re: Grid matters

#412956

Postby 88V8 » May 18th, 2021, 12:12 pm

An interesting aside in this commentary about... another... new battery design being developed by Australian Co Graphene Manufacturing Group, which supposedly can charge at ten times the rate of l-i;

Mobile phones can charge up quickly without frying the power grid, but electric cars simply can't right now. Tesla's Superchargers already pump electrons at rates up to 250 kW – representing a 60 kWh energy transfer in about 15 minutes. If you want to charge just 10 times faster than that, you need to be able to instantly supply 2.5 MW at the charge cable.
For reference, a typical coal-fired power station has a total output around 600 MW – so if 240 of these ultra fast charging cars happened to plug in at the same time, they'd put an instant load on the power grid equivalent to a whole power station. That's charging 10 times faster than today's batteries; GMG says it might be able to charge 60 times faster than some cells.


So potentially the limitation on EVs may not be the batteries, nor the availability of charging points, but the grid.
https://newatlas.com/energy/gmg-graphene-aluminium-ion-battery/

Perhaps that would be solved by some of these mini-nukes for which R-R is seeking investors... except apparently they expect the UK regulators to take four years to approve the design. Four years. Well, no hurry guys. Climate emergency... what?
Old link https://www.bbc.co.uk/news/science-environment-54703204

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