investigate the impact this change in procurement contracts has on efficiency. Focusing on coal mines, we find that those selling …

efficiency of the interaction (mobility) and land use structure (called as 'territorial functionality'), applied to the …

This article examines the efficiency of wind energy production. We quantify production losses in four wind parks across … Germany for 19 wind turbines with non-convex efficiency analysis. In a second stage regression, we adapt the linear regression …