I am travelling and don't have time to read fully but may be a jack hammer to crack a walnut. Consider the cost of storage to get through a few nights of a wind drought with no coal in the system.
Also consider that the storage will never be even partly charged without substantial fossil fuel in the grid, even when there is enough RE capacity to deliver 100% of demand on a good day.
When you get a chance to read the full article, you will realize that this has nothing to do with Wind or Solar. It addresses a specific claim that if you use gas to charge the storage, then time-sift that power to later in the day, it will improve efficiency.
Love your state of charge/discharge graph. We will be stealing that concept for our work!
Is there really not enough wind and solar to charge the batteries? Is that because they are dispatched to meet load first rather than charge them?
It's too bad that Substack does not allow images in replies!
I have answered you questions here:
https://wrjohn1.substack.com/p/energy-storage-vs-nat-gas-replies
I am travelling and don't have time to read fully but may be a jack hammer to crack a walnut. Consider the cost of storage to get through a few nights of a wind drought with no coal in the system.
Also consider that the storage will never be even partly charged without substantial fossil fuel in the grid, even when there is enough RE capacity to deliver 100% of demand on a good day.
Back of envelope estimates should do it.
See also Schernikau and Smith.
When you get a chance to read the full article, you will realize that this has nothing to do with Wind or Solar. It addresses a specific claim that if you use gas to charge the storage, then time-sift that power to later in the day, it will improve efficiency.
Thanks Bill, apologies, I should read before I write:)