[ajuc]

I don't know for power genreation, but it would make awesome weapon.

[w1ntermute]

Sounds like the Memento Mori (from Mobile Suit Gundam 00): http://gundam.wikia.com/wiki/Memento_Mori

[jkdearden]

It actually makes for pretty good power plants, usually they're called some variant of 'solar power towers'. The plants use a bunch of adjustable mirrors that focus sunlight in order to heat water and make it into steam that powers a turbine. There are also ones that use molten salts as a heating element, but that technology is a lot newer.

[JanezStupar]

I remember reading about such a device being planned to "send power" to remote US army outposts e.g. near front lines.