Ameren Illinois accepts debit or credit card payments, electronic check payments, and online banking payments. While the electronic check payment option is free, card transactions include a $2.75 convenience fee per transaction, as of 2015. Your bank may charge you for online banking transactions.Continue Reading
To make an online payment, you need a credit or debit Visa or MasterCard, or American Express credit card. Phone payments require either an electronic check or either a credit or debit card.
For payments above $99,999, you may be forced to make multiple payments and pay the convenience fee for each transaction. Ameren has also limited the number of card transactions to five within a 25-day period, to protect clients.Learn more about Customer Service