For this reason most businesses don’t review energy bills but pay them so their facilities won’t go dark. Complex invoices and minimum internal oversight create a dangerous situation – the risk of overpayment. To help businesses eliminate this risk, NUS provides invoice processing services. NUS captures the data from current energy invoices and validates them to ensure billed amounts are correct. Where NUS identifies an erroneous invoice, it initiates an investigation with the issuing supplier and has a new corrected invoice issued or a refund/credit applied to your subsequent invoice. As part of this service, NUS can code each invoice processed with your accounts payable information and provide you with an electronic payment file that can be easily uploaded into your accounting system. Our invoice processing systems and payment files are compatible with all major accounting software packages.