Firms' or industries' ranking in terms of environmental performance may be influenced by equilibrium and not only by ex ante technological characteristics. We adopt a natural definition of relative eco-efficiency between two industries operating within the same environmental constraint: the more...

We study, in a simple model, the partial equilibrium of an industry with n firms endowed by different Cobb-Douglas technologies which have different pollution effects. The price of input (labour) and the demand curve to the industry are given. Pollution is restricted by a tradeable market of...