RT Journal Article T1 Does corporate social performance improve environmentally adjusted efficiency? Evidence from the energy sector A1 Maside Sanfiz, José Manuel A1 Suárez Fernández, Óscar A1 López Penabad, Celia A1 Alzghoul, Mohammad Omar K1 Corporate social performance K1 Data envelopment analysis K1 Energy sector K1 Environmental firm efficiency K1 ESG K1 U-shaped AB This study analyses the impact of corporate social performance (CSP), proxied by the Environmental, Social and Governance (ESG) Index and its pillars and dimensions, on the environmentally adjusted efficiency (EAE) of 239 listed companies, over the period 2016–2021, in the global energy sector. The EAE index, estimated via data envelopment analysis (DEA), assesses the efficiency of companies by considering economic aspects alongside CO2 and energy consumption reduction targets. Our results support the hypothesis that only above a certain level of performance, do CSP practices positively influence EAE, so there is a non-linear U-shaped association between the overall ESG score and EAE. The same holds for the social and governance pillars, and the human rights and management subspecific dimensions, on EAE. Other ESG attributes show a positive linear relationship with EAE, namely the environmental pillar, the environmental innovation dimension and the shareholder dimension. Our paper has significant implications for companies, policy makers and researchers insofar as it estimates EAE and indicates which CSP practices should be invested in over the long term to have a positive effect on it PB Wiley SN 1535-3958 YR 2023 FD 2023 LK http://hdl.handle.net/10347/33001 UL http://hdl.handle.net/10347/33001 LA eng NO Maside-Sanfiz, J. M., Suárez Fernández, Ó., López-Penabad, M.-C., & Alzghoul, M. O. (2023). Does corporate social performance improve environmentally adjusted efficiency? Evidence from the energy sector. Corporate Social Responsibility and Environmental Management, 1–21. https://doi.org/10.1002/csr.2650 NO This work was supported by the Spanish Ministry of Science and Innovation, the State Investigation Agency (10.13039/501100011033) and European Regional Development Fund (Project number PID2021-127527OB-I00) DS Minerva RD 24 abr 2026