This report presents a financial analysis of AGL Energy Limited, evaluating its performance using various financial ratios and the DuPont analysis. The analysis covers the years 2015, 2016, 2017, and 2018, examining profitability (return on asset, net profit margin, and return on equity), liquidity (current and quick ratios), debt management (debt-to-equity and debt-to-asset ratios), efficiency (receivables and payables), and market performance ratios (price-earnings ratio). The report highlights the company's financial strengths and weaknesses, noting a negative performance in 2016 due to higher borrowing and a strong performance in 2018 with peak investment returns. The conclusion summarizes the overall financial health of AGL Energy, emphasizing the significance of financial ratios in understanding the company's performance. References to supporting literature are included.