Under the hybrid market model customers have the option of buying electric supply from a competitive retailer or choosing to continue taking supply from the utility company under default regulated rates. Thus, while all customers have the option of choosing competitive supply, the utility maintains a procurement function for customers who do not choose a competitive retail marketer. In the early years of this market model, most smaller customers chose to remain with the default utility supply while many of the larger commercial and industrial customers chose to purchase from the competitive market.