This is a great idea, but it isn't quite the finished article yet. Not all utility suppliers are hooked up yet, so it's not something everyone can rely on 100%.
Until my utility supplier gets hooked up with OneDox I can only really use this as a diary reminder at the moment. I believe the intent is that it will remind me of up coming contract expiry dates, and suggest alternative deals to save me money. I can't see how this happens as present.
Idea is sound, and I am sure it will get there.