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Explanation of New Terminology for Sales and Revenue Data <br /> Changes in the electric utility industry and to the Energy Information <br /> Administration's (ETA) data collection process have resulted in some new <br /> terminology. Below is an explanation of the new terminology used by ETA for sales <br /> and revenues reported by U.S. electric utilities. <br /> Full Service Sales — (also referred to as "bundled" sales) are sales by a utility to a <br /> customer where the utility provides both the energy and the delivery service. <br /> Note that a utility can provide energy either by generating power or by purchasing <br /> wholesale power to sell to its customers. These full service sales occur in states that <br /> have not enacted retail choice as well as in retail choice states when the customer <br /> elects to remain with the standard provider for both energy and delivery service. <br /> Energy Only Sales — in retail choice states, this is the power supply portion of the <br /> customer's bill if the customer chooses a supplier that is not the standard provider <br /> for its service territory. <br /> Delivery Only Sales — in retail choice states, this is the distribution portion of the <br /> customer's bill if the customer chooses a supplier that is not the standard provider <br /> for its service territory. (When a customer in a retail choice state elects to receive <br /> energy service from a provider other than the local utility, then the local utility <br /> providing the delivery service records the sale as a "delivery only" sale.) <br /> Unbundled Sales — the sum of the delivery only sales and the energy only sales. <br /> Since the energy service suppliers are required to report their sales to customers <br /> grouped by the state where the customers reside, unbundled sales can only be <br /> summed on a state or national level. <br /> The methodology used by the Energy Information Administration is: <br /> Delivery Only Revenue + Energy Only Revenue <br /> Energy Only Sales (Mwh) <br /> Other notes on the data: <br /> In theory, the "Delivery Only" MWH sales and the "Energy Only" MWH sales <br /> should be equal in every state. However, that is not true in any state for the 2002 <br /> data. In fact, many states have large differences in the Energy Only MWH sales <br /> and the Delivery Only MWH sales. The likely reason for this is reporting errors or <br /> incomplete data. Until there is consistency in the reporting of sales and revenues, <br /> analysis of the impact of retail choice is extremely difficult. <br />