Abstract: A system receives information for a plurality of invoices having invoice amounts owed by a debtor-buyer to a plurality of creditor-suppliers, a cash pool amount for a cash pool available by the debtor-buyer for early payment of at least some of the invoice amounts, and a desired return rate, receives a plurality of offers, each offer from a corresponding creditor-supplier and comprising an offer return rate, determines whether each of the plurality of offers is eligible for acceptance based on each offer return rate from each offer and the desired return rate for the buyer and selects one or more invoices each having an invoice amount, and transmits award information to the debtor-buyer.

Abstract: A solar energy collector for the entrapment of radiant energy from the sun or other energy source and the conversion thereof to usable heat energy comprises a radiant energy-transmitting cover panel assembly having an edge rail attached to at least a portion thereof and a radiant energy absorber held in spaced relation by a structural chassis side wall member having a channel portion adapted to receive and non-rigidly hold the edge rail of the cover panel assembly and allow for free linear and lateral expansion thereof.