TY  - JOUR
T1  - Factors affecting energy sector efficiency in OECD countries
AU  - Sağlam, Fatih
AU  - Sözen, Mervenur
AU  - Sözen, Çağlar
PY  - 2025
DA  - May
DO  - 10.26650/ibr.2025.54.1267765
JF  - Istanbul Business Research
JO  - IBR
PB  - Istanbul University
WT  - DergiPark
SN  - 2630-5488
SP  - 143
EP  - 155
VL  - 54
IS  - 1
LA  - en
AB  - Energy efficiency is an important concept for ensuring sustainable development and reducing energy consumption. Efficiency means using a minimal amount of energy to complete a process. Considering the amount of energy needed by OECD countries, we aimed to analyze the energy efficiency of 37 OECD countries in different sectors, such as transport, industry, trade, and agriculture for 2015. The analysis involves modeling the efficiency results obtained using multivariate adaptive regression splines to explore linear and nonlinear relationships. We examined the effects of various factors, such as Gross National Income (GNI), population density, Gross Fixed Capital Formation (GFCF), Gross Floor Area (GFA), CO2 density, and Total Primary Energy Supply (TPES). The results showed that the energy efficiency of OECD countries varies greatly between different sectors, with transport and industry being the least productive. In addition, this study revealed that the nonlinear effects of the GNI of the energy mix, population density, and CO2 density significantly affect energy efficiency. The findings show that policies aiming to promote energy efficiency in different sectors should consider the nonlinear effects of various factors that can lead to more efficient and sustainable energy use. In addition, increasing energy efficiency has many benefits, including environmental protection, cost savings, and improved economic performance.
KW  - Data Envelopment Analysis
KW  - Second Stage Analysis
KW  - Energy Efficiency
KW  - OECD
KW  - MARS
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UR  - https://doi.org/10.26650/ibr.2025.54.1267765
L1  - https://dergipark.org.tr/en/download/article-file/3021667
ER  -