New South Wales Consolidated Regulations New South Wales Consolidated RegulationsThe percentage (or range of percentages) that is the subject of a renewable energy sources offer and the percentage that is the subject of a renewable energy sources term may be calculated and applied either (at the choice of the supplier):
(a) as the equivalent percentage of the customer’s electricity usage over a billing period, or
(b) in some other manner permitted under the approved accreditation scheme of which the supplier is a member.