In Scotland, applications to build and operate power stations and to install overhead power lines, are made to the Scottish Ministers for consent. Applications are considered by Scottish Ministers where they are:
in excess of 50 megawatts (MW) for onshore wind farms and power stations that are not wholly or mainly driven by water (such as coal/gas fired or nuclear plant); and
in excess of 1 MW for offshore wind farms and generating stations wholly or mainly driven by water (such as hydroelectric, wave or tidal generating stations)
overhead power lines and associated infrastructure, as well as large gas and oil pipelines.
Such applications cover new developments as well as modifications to existing developments. Applications below these thresholds are made to the relevant local planning authority.