The Standard Industrial Classification (SIC) system has been replaced by the North American Industry Classification System (NAICS). Since the Bureau of the Census has collected the information necessary to classify establishments on both an NAICS and an SIC basis, the same 1998 data can be shown on both the old and the new basis in bridge tables that allow comparisons between the two systems.  These data are hereby produced for the last time on an SIC basis for 1998 at the national level only.

(a) Transfers In include quantities delivered from any other establishment(s) in the company, quantities transferred from other establishments of the company for which payment was not made, quantities purchased centrally within the company but separate from the reporting establishment, and quantities for which payment was made in kind.

 (b) Total Onsite Generation includes cogeneration, generation by renewable energy sources, and conventional generation by combustible fuels.

 (c) Net Electricity Demand is the sum of purchases, transfers in, and total onsite generation, minus sales and transfers offsite.  It is the total amount of electricity used.  It is not comparable to net electricity that excludes electricity generated onsite by combustible energy sources.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Energy Consumption Division, Form EIA-846, '1994 and 1998 Manufacturing Energy Consumption Surveys.'