pay your entergy louisiana, arkansas, mississippi, new orleans bills online with ease using billmatrix. welcome to the online bill payment system for entergy brought to you by bill matrix. You will need a copy of your entergy bill available for this payment transaction. pay your bill with a credit card, debit card or electronic check through the speedpay or billmatrix site, for a $1. 60 service fee. With speedpay you can use your. billmatrix is a company that entergy has authorized to help customers pay their entergy bills using credit…