The most advantageous part about their plan is that they offer prepaid electricity, where you pay beforehand and avoid the usual surprise you get every month when you see your bill. This is super convenient when used with text alerts because they can tell you how much electricity you’ve used, how much money you’ve saved, how much you have remaining on your prepaid balance, and the days remaining too.
On the other hand, month-to-month variable rate (no-contract) plans don’t have cancellation fees. You won’t be penalized if you find a better deal elsewhere and want to make another switch.  And, you won’t be stuck paying more than you should be if the market rate for electricity trends down.  But, if it goes up, you’ll be paying more than your in-contract neighbors, and you’ll likely want to shop around again for a better deal.