ENVIRONMENTAL AND ECONOMIC GROWTH ORIENTED ENERGY EFFICIENCY IN G-11 COUNTRIES: EVIDENCE FROM DEA AND MALMQUIST TOTAL FACTOR PRODUCTIVITY INDEX

Year 2025, Issue: 48, 365 - 376, 31.07.2025

Fatih Volkan Ayyıldız

https://doi.org/10.18092/ulikidince.1685643

Abstract

The aim of this study is to examine the energy efficiency oriented environmental and economic growth in G-11 countries in the time period 2000-2023. Data envelopment analysis (DEA) and Malmquist total factor productivity (TFP) index methods were used in the analysis. The findings obtained in the study, respectively, indicate that the input-oriented model findings established under the assumption of constant returns to scale indicate that the efficiency of decision-making units decreased in the period in question, however, the USA, Japan, Australia, Netherlands and Switzerland were effective in all periods. The country with the lowest efficiency value in the relevant period is Canada. The input-oriented model findings established under the assumption of variable returns to scale indicate that the efficiency of decision-making units decreased in the period 2000-2023, furthermore, the USA, Japan, Australia, Belgium, Netherlands and Switzerland were effective in all periods. As a result of the study, according to the Malmquist TFP index findings, environmental and growth-oriented energy efficiency is achieved in Canada, Italy, Spain, Sweden and Switzerland.

Keywords

Energy Efficiency , Data Envelopment Analysis , Malmquist Total Factor Productivity Index

Ethical Statement

This article contains a study that does not require ethics committee approval.

G-11 ÜLKELERİNDE ÇEVRESEL VE EKONOMİK BÜYÜME ODAKLI ENERJİ VERİMLİLİĞİ: VZA VE MALMQUIST TOPLAM FAKTÖR VERİMLİLİĞİ ENDEKSİNDEN KANITLAR

Abstract

Bu çalışmanın amacı, 2000-2023 zaman diliminde G-11 ülkelerinde çevresel ve ekonomik büyümeye odaklanan enerji verimliliğini incelemektir. Veri zarflama analizi (VZA) ve Malmquist toplam faktör verimliliği (TFV) endeksi yöntemleri analizde kullanılmıştır. Çalışmada elde edlen bulgular sırasıyla ölçeğe göre sabit getiri varsayımı altında kurulan girdi yönelimli model bulguları, söz konusu dönem aralığında karar verme birimlerinin etkinliğinin azaldığını, bununla birlikte ABD, Japonya, Avustralya, Hollanda ve İsviçre’nin tüm dönemlerde etkin olduklarını belirtmektedir. İlgili dönemde etkinlik değeri en düşük olan ülke Kanada’dır. Ölçeğe göre değişken getiri varsayımı altında kurulan girdi yönelimli model bulguları, 2000-2023 döneminde karar verme birimlerinin etkinliğinin azaldığını, ayrıca ABD, Japonya, Avustralya, Belçika, Hollanda ve İsviçre’nin tüm dönemlerde etkin olduklarını açıklamaktadır. Çalışmanın sonucunda Malmquist TFP endeksi bulgularına göre ise Kanada, İtalya, İspanya, İsveç ve İsviçre’de çevresel ve büyüme odaklı enerji verimliliğinin gerçekleştiğini göstermektedir.

Keywords

Enerji Verimliliği , Veri Zarflama Analizi , Malmquist Toplam Faktör Verimliliği Endeksi

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