19BADetermination of number of certificates

#### 19BA Determination of number of certificates (1) For subsection 22(1) of the Act, the Regulator may determine the number of certificates that may be created for a particular model of solar water heater in each of the zones mentioned in paragraph 19C(3)(b). (2) In making the determination, the Regulator must: (a) if a determination under subregulation 19B(1) is in force—make the determination in accordance with that determination; and (b) if there is no determination under subregulation 19B(1) in force—determine the number of certificates using the method in subregulation (3). (3) For paragraph (2)(b), the number of certificates that may be created is to be worked out: (a) by reference to the difference, over the number of years specified for the solar water heater in regulation 19BE, between: (i) the energy, other than solar energy or energy collected from the latent and sensible heat of the atmosphere, to be used by the solar water heater; and (ii) the electrical energy that would be used by an equivalent electric water heater; and (b) having regard to the following, as in force at the time of the determination: (i) AS/NZS 2535.1:2007, Test methods for solar collectors, Part 1: Thermal performance of glazed liquid heating collectors including pressure drop; and (ii) AS 4234—1994, Solar water heaters—Domestic and heat pump—Calculation of energy consumption; and (iii) AS/NZS 4692.1:2005, Electric water heaters, Part 1: Energy consumption, performance and general requirements; and (c) if the solar water heater has a volumetric capacity up to and including 700 litres—having regard to the guidelines known as REC calculation methodology for solar water heaters and heat pump water heaters with a volumetric capacity up to and including 700 litres, published by the Regulator on its website, as in force at the time the determination is made; and (d) if the solar water heater has a volumetric capacity over 700 litres—having regard to the guidelines known as REC calculation methodology for solar water heaters and heat pump water heaters with a volumetric capacity over 700 litres, published by the Regulator on its website, as in force at the time the determination is made. (4) For subregulation (3), an electric water heater is an equivalent electric water heater if it: (a) supplies the same, or a similar, hot water load as the solar water heater mentioned in subparagraph (3)(a)(i); and (b) is not a heat pump.