The problem of climate change, caused by global warming, has a negative impact on economic and social life. In this direction, the Sustainable Development Goals (SDGs) established for sustainable development have revealed important activities to be implemented by countries. In order to reduce the greenhouse effect, it has become necessary to reduce the use of fossil resources and increase the use of renewable energy resources. It is important to provide sources of finance for renewable energy investments and to attract investment in this area. Countries are developing renewable energy projects and increasing their investments in line with targets. The increase in the number of companies investing and producing in this field, and the fact that these companies are traded on the stock exchange, has led to the need to evaluate the performance of companies in this field. Both company managers and those seeking to invest in such companies need to know the financial position and profitability of the companies and the extent to which targets have been achieved. In addition, renewable energy companies have a very important place in terms of energy dependency and energy security for countries. In this context, the study aims to highlight the importance of assessing the financial performance of renewable energy companies.

The study analysed four selected renewable energy companies (AKENR, AYDEM, ENJSA and ZOREN) included in the Borsa Istanbul Sustainability Index and the Steam, Gas and Electricity Index. In order to assess the performance of the relevant companies, the Dupont Analysis approach, one of the financial analysis methods, was used. The study analysed balance sheet and income statement data from the companies' basic financial statements for the years 2021, 2022 and 2023. The financial performance and profitability of the selected companies were calculated for the relevant period and assessments were made on both a company and sector basis. The results showed that company performance changed over the years. It was particularly noticeable that the most successful companies in terms of financial ratios changed over the years.