(1)  In this regulation –

satisfactory payment , in relation to the payment of an electricity account, means that the account is fully paid –

(a) no later than 5 business days after the due date for payment specified in the account; or

(b) no later than the number of business days, as agreed between the electricity retailer and the customer, after the due date for payment specified in the account; or

(c) in accordance with a payment plan agreed to under regulation 19 .

(2)  An electricity retailer must return a tariff customer's security deposit, refundable advance or guarantee to the customer, together with accrued interest, within 10 business days after any of the following events occurs:

(a) the customer completes 2 years of satisfactory payment of electricity accounts;

(b) the customer is no longer a tariff customer and he or she has paid any amount owed to the electricity retailer;

(c) the electricity retailer ceases the sale and supply of electricity to the customer and the customer has paid any amount owed to the electricity retailer.