Application of Customer Payment. NATIONAL GRID agrees to calculate the fractional share of the Customer Payment (i.e., proration of Customer Payment) for each Party in accordance with HEFPA requirements except upon payment of the Lesser Amount, in which case the payment will be prorated to the Lesser Amount. Upon payment of the Lesser Amount, the unpaid portion of the Customer Accounts Receivable shall be identified and included in subsequent bills to Customer until either the unpaid amount is charged back under this Agreement or paid in full, whichever occurs first.
