Generally, the generation of electricity is unrelated to anything on your bill. Power plant companies generate electricity and sell it to utilities as well as retail electricity providers in deregulated areas. The electricity is then resold to you, the customer. Transmission and distribution is taken care of and charged to you by your utility, regardless of what company supplies the electricity. These charges are separate from the supply portion of your bill.
Every state that is deregulated requires their electricity providers to be licensed or certified by the state in order to sell electricity. Your state’s public utility commission website keeps an up to date list of these electricity providers so that you can be certain that you are purchasing electricity from an authorized electricity provider. All of the electricity providers represented on ElectricityPlans.com are authorized electricity providers in the respective states where they do business.