The challenge that all developed countries are facing is how to grow their economies in a sustainable way. To do this, energy efficiency is proposed as one of the keys solutions. In Europe, energy efficiency is one of the key elements; therefore; Europe the worlds largest energy importer worldwide.
Lai-Wang Wang, Ke-Duc Le (2019); Energy Efficiency and Improvement European countries: Data Envelopment Analysis approach; International Journal of Scientific and Research Publications (IJSRP)
9(11) (ISSN: 2250-3153), DOI: http://dx.doi.org/10.29322/IJSRP.9.11.2019.p9506