There is a similar idea using metal pellets fired from electromagnetic accelerators in a "space fountain". The energy would be stored there in the form of kinet

There is a similar idea using metal pellets fired from electromagnetic accelerators in a "space fountain". The energy would be stored there in the form of kinetic and potential energy, and it is relatively effortless to tap into that stored energy to even out something like the energy grid. Has the nice side effect of being able to launch things to space on it. http://www.orbitalvector.com/Orbital%20Travel/Space%20Fountains/Space%20Fountains.htm http://www.orbitalvector.com/Orbital%20Travel/Space%20Founta...