BBC News: Molten metal batteries for the grid

[kf4hcw]

On 2014-09-21 15:26, William Danielson wrote:
> I have heard from some folks who worked where they had a forward and
> reverse hydroelectric setup...off peak they would pump water up above
> a dam, on peak they would release it to power alternators. 

I saw this a year ago (maybe more).

I wonder which loses less energy -- pumping water upstream, or keeping
molten metal batteries hot (plus inversion losses).

Of course, you don't have the opportunity to do the water trick
everywhere... so there's that.

_M

-- 
kf4hcw
Pete McNeil
lifeatwarp9.com/kf4hcw