This work is an account of the pioneering days of hydro-electricity in Scotland.

It shows how each hydro project brought its own set of technical challenges, underlining the remarkable engineering achievements involved in bringing hydro-electric power to the wild glens of the Scottish Highlands.

It concludes by looking at the future of hydro-electric power worldwide.

Is hydro-electric power the sustainable technology of choice in a new century already riven with ecological angst.