green: American electric utility companies
Description
The dataset consists of 123 American electric utility companies. As in the set-up of Gijbels et al. (1999),
we used the measurements of the variables $y_i = \log(q_i)$ and
$x_i = \log(c_i)$, where $q_i$ is the production output
of the company $i$ and $c_i$ is the total cost involved in the production.
For a detailed description and analysis of these data see, e.g., Christensen and Greene (1976) and Greene (1990).source
Gijbels et al. (1999).References
Christensen, L.R. and Greene, W.H. (1976). Economies of Scale in U.S. Electric Power Generation, Journal of Political Economy, University of Chicago Press, 84, 655-76.
Gijbels, I., Mammen, E., Park, B.U. and Simar, L. (1999). On estimation of monotone and
concave frontier functions. Journal of American Statistical Association, 94, 220-228.
Greene, W.H. (1990). A Gamma-distributed stochastic frontier model, Journal of Econometrics, 46, 141-163.