(1) For the purposes of this Act, the ESC rules may provide that an energy source referred to in section 22 or 23 has the meaning specified in the ESC rules.
(2) For the purposes of this Act, the ESC rules may make provision for and in relation to limiting the meaning of an energy source referred to in section 22.
(3) For the purposes of this Act, the ESC rules may make provision for and in relation to extending the meaning of an energy source referred to in section 23.