Controversy continues over the question of whether capital and energy are substitutes or complements. The authors find that the answer to the question partly depends on the aggregation of building capital and machinery capital into an aggregate input called capital. The authors' empirical...

This paper presents a model to estimate the rate of capacity utilization (CU) in the manufacturing sector by state. Consistent measures of state-level CU rates have been unavailable since 1982. The lack of a capacity measure has hindered regional studies of capital formation, long-run output...

This paper seeks to reconcile the growth empirics technique of Mankiw, Romer, and Weil (1992) with the empirical results of Barro and Sala-"i-Martin (1991) through the development of a new database covering the 1977-96 period. We create state-by-state capital stock and gross investment estimates...