Thanks for your post!
If all of, or at least the majority of this 50c feed-in tariff is contributed by the government then this will carry over to AGL provided that the name on the account remains the same! If you'd like to find out more, you're always welcome to get in touch with our web chat team here.
You won't be able to determine this from your bill unfortunately! If you can locate your 'NMI' or 'National Meter Identifier' on this bill and send this through to me in a private message, I'll be able to double check a few bits and pieces for you.