Cruachan hydro power station
Media playback is unsupported on your device

Scottish Power considers plans to double Cruachan energy output

Scottish Power is considering plans to double the output of Cruachan hydro electric power station in Argyll.

The company will carry out a feasibility study before deciding whether to push ahead with the project.

BBC Scotland's environment correspondent David Miller reports on how hydro power is already enjoying a renaissance in Spain.