View Single Post
Old 12-18-2016, 12:01 AM   #35 (permalink)
Master EcoModder
freebeard's Avatar
Join Date: Aug 2012
Location: northwest of normal
Posts: 20,913
Thanks: 5,857
Thanked 6,826 Times in 5,521 Posts
The most economical energy storage isn't pumped water; it's an inclined electric railroad. Uphill for storage, downhill for power.

The DIY version might be barbell weights suspended by cables on a flagpole.
  Reply With Quote