C Climate change and environmental damage due to energy sector activities require theimplementation of green accounting and environmental cost management to improvefinancial performance and corporate sustainability. the research objective is to analyzethe effect of green accounting practices, environmental performance, and cost of capitalon the financial performance of energy companies listed on the indonesia stock exchangefor the period 2021-2024. the method used is simple linear regression analysis on thecompany\\\'s financial statements. the results of this study are that green accounting has anegative effect but is still able to increase the company\\\'s net profit. better environmentalperformance leads to increased spending on compliance, resulting in lower financialperformance in the short term. efficient capital costs contribute positively to improvingthe company\\\'s financial performance. the research confirms the need for effectivestrategies to integrate environmental aspects and encourage efficient management ofenvironmental costs. further recommendations are to expand the variables, study sectorsand research period.