This case study delves into the management and decision-making challenges faced by AGL (Australian Gas Light) energy company, a public limited company involved in gas and electricity generation and retail in Australia. The company has encountered issues in decision-making, leading to criticism from stakeholders, including the state government and customers. The study identifies key research questions to address these problems, employing a qualitative research design using secondary data sources like books, journals, and company reports. It analyzes poor decisions made by AGL, such as divesting the Hazelwood power plant and selling gas to international markets, highlighting their negative effects, including financial write-downs and increased energy prices. The study proposes alternatives like stakeholder relations management and thorough analysis before execution, recommending that AGL learn from past mistakes, enhance communication, and develop sustainable development goals. Ultimately, the case study emphasizes the importance of informed decision-making and stakeholder involvement for AGL to achieve sustainable management goals.