Jed— You missed the point of using a submarine hull!
It can be anchored 500 to 1000 feet below sea level with a large differential pressure when there is a valved vent pipe connected to the surface. I agree the hull volume would not be a ”Banks Lake” volume feeding Grand Coulee Dam. But may be as large as 10,000 cubic meters and able to supply energy for a small community near the sea for a night or so to supplement solar or wind power. Bob Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 ________________________________ From: Jed Rothwell <jedrothw...@gmail.com> Sent: Thursday, November 2, 2017 4:51:00 PM To: Vortex Subject: Re: [Vo]:Article on approaches to energy storage bobcook39...@hotmail.com<mailto:bobcook39...@hotmail.com> <bobcook39...@hotmail.com<mailto:bobcook39...@hotmail.com>> wrote: An old submarine hull (ridged structure) would work nicely as a reservoir. That's an underwater reservoir: https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity#Underwater_reservoirs That is MUCH too small. It has to have hundreds or even thousands of times more capacity than that to hold a significant amount of energy. The water pressure is low. The reservoir is not far below sea level. It is not like a dam with water falling hundreds of feet. Typical pumped storage lakes are 30 to 50 million cubic meters. - Jed