Snowy 2 cost $5 per watt (blown out from initial $1/watt) and already had a bunch of infrastructure. Beats lithium ion by a fair margin for diurnal or longer st

Snowy 2 cost $5 per watt (blown out from initial $1/watt) and already had a bunch of infrastructure. Beats lithium ion by a fair margin for diurnal or longer storage, but hardly a poster child for the process being cheap or on budget. Still cheaper than nuclear though because 1W of storage can serve 2-3W of wind+solar.