Hydro-Electric power is the main source of power generation in this part of the world.
There are several Hydro power stations within a 30 minute drive of Inverness. The local power supplier is called Scottish Hydro-Electric, now part of Scottish & Southern Energy Plc, but in pre-privatisation days was The North of Scotland Hydro-Electric Board.
If you are interested the following link will give you some information on hydro power in North Scotland. www.scottish-southern.co.uk/pftg/default.htm