Re:EU experts to say nuclear power qualifies for green inves...
by pydry on Saturday March 27, 2021 @07:31PM
(#26606605)
Storing became cost effective last year: https://ieefa.org/ieefa-grid-scale-battery-costs-have-reache...
>If storing energy were cost effective you could make a killing buying low and selling high on the national grid.
Maybe not a killing but you could make $$$ yes. This is starting to happen.
Re:EU experts to say nuclear power qualifies for green inves...
by tpmx on Saturday March 27, 2021 @07:36PM
(#26606639)
You're not understanding that correctly. They are talking about things like https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve
This giant (world's largest!) and very expensive thing provides short term-relief against grid outages. The batteries last for ~1 hour and it can still only provide electricity for something like 50k homes.
(It's used for more economically useful things, like stabilizing the grid in emergencies.)
The periods between high and low/zero wind are in the order of 200-300 hours (at least where I live).
This is apparent looking at how much energy prices change throughout the day / month based on usage and cost of production, and how predictable those changes are.
If storing energy were cost effective you could make a killing buying low and selling high on the national grid.