Firm value reflects investors’ assessment of a company’s performance and future prospects. This study aims to analyze the effect of Green Finance, Environmental Performance, and Good Corporate Governance on Firm Value in energy sector companies listed on the Indonesia Stock Exchange (IDX) during the 2020–2024 period. This study employed a quantitative approach with a descriptive-verificative method using secondary data obtained from annual reports, sustainability reports, and other relevant publications. The population consisted of 89 energy sector companies listed on the IDX, and 21 companies were selected through purposive sampling, resulting in 105 observations. Green Finance was measured using the Green Coin Rating (GCR) index, Environmental Performance was measured using the PROPER rating, Good Corporate Governance was proxied by the proportion of independent commissioners, and Firm Value was measured using Price-to-Book Value (PBV). Data were analyzed using classical assumption tests and multiple linear regression with SPSS 27. The results indicate that Green Finance and Good Corporate Governance have a positive and significant effect on Firm Value, while Environmental Performance has no significant effect on Firm Value. These findings suggest that the implementation of sustainable finance practices and effective corporate governance can enhance firm value by increasing investor confidence, whereas environmental performance alone has not yet become a determining factor in firm valuation within Indonesia’s energy sector.
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