Oconee appears headed toward a big pay day. The check from Duke Energy to cover its Oconee County holdings for the tax year 2012 is expected to arrive at the county Treasurer’s Office before Wednesday. For 96.3/WGOG NEWS, Auditor Ken Nix calculations show the county’s top taxpayer must pay $27,044,493.86. According to county tax officials, to avoid a three percent late penalty Duke must ensure the payment is in the treasurer’s office by the close of business tomorrow. If it mails the check, the letter must bear a postmark no later than tomorrow.