China is one of the largest consumers of energy globally. The country also emits some of the highest levels of CO2 globally. In 2009, 18% of the world’s total energy was consumed in China and the growth rate of energy consumption in China is 6.4% per year. In recent years, the Chinese...

The promotion of US energy efficiency policy is seen as a very important activity by the Energy Information Agency (EIA). Generally, the level of energy efficiency of a state is approximated by energy intensity, commonly calculated as the ratio of energy use to GDP. However, energy intensity is...

In this paper, we compare the efficiencies of the eight major renewable energy sources that generate electricity. We use Data Envelopment Analysis (DEA) to determine the most efficient renewable energy source. We apply four different analytical approaches to rank these energy sources with...

In this paper, we compare the efficiencies of seven primary renewable energy technologies that generate electricity. We use Data Envelopment Analysis (DEA) to determine the most efficient renewable energy source with predetermined input and output variables. We apply four different analytical...

Increasing food demand will most likely be met with agricultural intensification and land clearing, exacerbating environmental consequences associated with food supply. The mechanisms and trade-offs between agriculture and the environment are heterogeneous and not well understood, yet key to...

In this paper we present a new approach to evaluate the environmental efficiency of decision making units. We propose a model that describes a two-stage process consisting of a production and an end-of-pipe abatement stage with the environmental efficiency being determined by the efficiency of...