If Project Co:
(a) achieves Commercial Acceptance earlier than the Date for Commercial Acceptance but after the Original Date for Commercial Acceptance; and
(b) has been granted an extension of time for an Extension Event that is a Compensable Extension Event and has been compensated or is entitled to compensation under clause 26.12(a) for that Compensable Extension Event,
Project Co must pay the State within 20 Business Days of the Date of Commercial Acceptance as a debt due and payable a share of the Prolongation Costs paid or payable to Project Co for the period between the Date of Commercial Acceptance and the Date for Commercial Acceptance:
(c) as agreed between the State and Project Co; or
(d) if Project Co and the State are unable to agree an amount payable under clause 26.13(c), 50% of the Prolongation Costs paid or payable to Project Co for the period between the Date of Commercial Acceptance and the Date for Commercial Acceptance.