45.2  Report and Invoice

On the [first (1st)] Business Day following the end of each Payment Period the Contractor shall submit to the Authority:

45.2.1  a report showing for that Payment Period:

(a)  prior to the issue of the Acceptance Test Certificate [for a Facility] the Commissioning Payment, and

(b)  following the issue of an Acceptance Test Certificate [for a Facility] the Monthly Payment, and

(c)  individually, each item taken into account in calculating the [Annual Unitary Charge Monthly Payment] pursuant to paragraph 12 of Schedule 4 (Payment Mechanism); and

45.2.2  an invoice for the amount (if any) shown by the report as owing by the Authority to the Contractor and for any VAT payable by the Authority in respect of that amount.