Peak and off-peak are quite easy to predict when it comes to electricity bills. Night is off-peak.
A better analogy would be cellphone roaming, if when you placed the call, you were told exactly how much more you were going to pay per minute. Roaming is (and long distance charges used to be) even worse than Uber's surge pricing because you only see the charge afterwards.
A better analogy would be cellphone roaming, if when you placed the call, you were told exactly how much more you were going to pay per minute. Roaming is (and long distance charges used to be) even worse than Uber's surge pricing because you only see the charge afterwards.