(1) The Electricity Generators (Rateable Values) Order 1989 [Footnote e] shall be amended as provided in this article.
(2) For article 3(2) there shall be substituted:
(2) The conditions mentioned in paragraph (1) are that —
(a) the hereditament is used or available for use for the purposes of generating electricity, where —
(i) such use is its sole or primary function; or
(ii) it is so used or available in connection with a scheme for the production for sale of both electrical power and heat; or
(iii) its primary source of energy is the burning of refuse; and
(b) the generating plant —
(i) uses wind, tidal or water power as its primary source of energy; or
(ii) if its primary source of energy is the burning of refuse, has a declared net capacity of 25 megawatts or more; or
(iii) has a declared net capacity of 500 kilowatts or more.
(3) In article 4(1), after “wind” there shall be inserted “or tidal” .