It is also TBMK a sweet spot becuase an analysis by I think...

It is also TBMK a sweet spot becuase an analysis by I think UNSW.
Found that with Just 8hr storages we can get to 85% WInd and Solar, Then on top of that is the % from existing river hydro.

Then the last Few percent get hard. It can be done with hydro as per Blakers. But the extra storage capacity to do so only gets used rarely and the marginal cost of making larger storages with more hours makes the extraMWH per year supplied more expensive,

PHS in world with substantial numbers of smaller hr batteries, for much of the year will be able to go for cheaper MWH for pumping as they are less desperate to get charged than batteries. PHS does not have cycle cost so makes money at smaller arbitrage differentials, so may choose to charge up on days batteries just won't. paying for larger turbines for more peak power will get extra cash some days of the year but now aces us had to head against batteries when buying MWH to store for arbitrage. VBy having deeper storage than batteries. Our PHs can out mabuver them on price.

yes I am in GNX for the PHS not the batteries.