The first thing to do in considering a new concept is to think conceptually, not technically. Tesla, for example, conceptually considered that EV's may be a solution to the fossil fuel problem before they knew what size they could make their Lithium batteries.
So far we have the concept of sponsored data, and a third party has a desire to promote/sell/ their wares. In this case, public utilities need to engage their customers in the new MMS manner, the new talk. But a simple text message as a reminder to pay your bill is just the beginning. They can link your bill in the message through a URL inserted in the text. But then we have a problem. URL's consume data.
I'll let you work out the rest; after all, this is a sponsored data thread. Maybe you can come up with a financial model that would include the CSP, or at least large public utilities having their app hosted on Freeway.
Hope this helps and excuse my lack of detail.
SYT Price at posting:
3.5¢ Sentiment: Buy Disclosure: Held