The estimated equations are regression equations that together form a system of interrelated forecasting equations. The general method of estimation is ordinary least squares.
Some equations incorporate a correction for autocorrelation of the error term.
The historical energy data used to estimate the model come primarily from the IMDS electronic database. Because of data limitations there are inconsistencies in the level of disaggregation of each type of fuel. Employment and Earnings , Bureau of Labor Statistics, U.S. Department of Labor. Industrial Production , Board of Governors, U.S. Federal Reserve System. Monthly Labor Review , Bureau of Labor Statistics, U.S. Department of Labor.