News for hackers. Stuff that matters.

A comment on Oil Crash is Kicking Off One of the Largest Wealth Transfers in History. Parent comment

Re:Oil Crash is Kicking Off One of the Largest Wealth Transf... by _nedR on Tuesday February 02, 2016 @02:52PM (#11021991)
How efficient would that be though?
[ Parent | on HN ]
Re:Oil Crash is Kicking Off One of the Largest Wealth Transf... by binarypaean on Tuesday February 02, 2016 @03:38PM (#11022324)
Round-trip energy efficiency is reported to be > 80% for pumped-hydro energy storage.

Ecological, space, and financial efficiency are more variable.

http://energystorage.org/energy-storage/technologies/pumped-...

[ Parent | on HN ]