What about membership fees?

Bill Hero handles membership fees

Some energy plans include a mandatory fixed one-time, monthly or annual membership fee, or an account establishment fee.

Bill Hero includes any such fees in its calculations by applying the fee pro-rata over 1 year. 

For example, a plan with a $120 one-time membership fee would be calculated with an additional $10 charge in the Bill Hero calculation for what this plan would cost for a monthly bill. 

The system actually calculates this additional charge by bill-days, not months, but you get the idea.