Sch 2 para 3
Development to provide a change to or extension of— (a) a generating station (other than a change or extension set out in paragraph 2 of Schedule 1); or (b) an electric line of a description set out— (i) in paragraph 1 of Schedule 1(other than a change or extension set out in paragraph 2 of that Schedule); or (ii) in paragraph 2 of this Schedule, where the generating station or electric line is already authorised, executed or in the process of being executed and the change or extension may have significant adverse effects on the environment.