Pertumbuhan jumlah penduduk serta perkembangan dan kemajuan teknologi saat ini menyebabkan terjadinya peningkatan kebutuhan energi listrik, baik untuk skala listrik rumah tangga, komersial maupun industri. pembangkit yang digunakan pada sistem tenaga listrik kebanyakan merupakan pembangkit termal. pembangkit termal beroperasi dengan bahan bakar yang umumnya berupa bahan bakar fosil seperti gas, minyak dan batu bara sehingga hal tersebut perlu mendapat perhatian khusus. emisi gas yang ditimbulkan pembangkit listrik termal dapat berupa nitrogen oksida (nox), sulfur dioksida (so2), dan karbon dioksida (co2). emisi gas buangan tersebut berdampak pada lingkungan sekitar serta akan berkontribusi signifikan terhadap emisi gas rumah kaca dan perubahan iklim global. penelitian ini mempunyai tujuan penting mengenai perhitungan emisi suatu pembangkit sehingga mampu meminimalisir adanya emisi gas buang yang ditimbulkan pembangkit. pada penelitian ini emission dispatch diselesaikan menggunakan metode quadratic programming pada software gams dan telah berhasil diuji coba menggunakan data sistem ieee 30 bus dan sistem jawa bali 500 kv. jika metode quadratic programming dibandingkan dengan metode emission dispatch lainnya yaitu metode iterasi lamda dan metode flower pollination algorithm khususnya pada sistem jawa bali 500 kv, metode quadratic programming merupakan metode terbaik untuk permasalahan emission dispatch. kata kunci: pembangkit termal, emission dispatch, quadratic programming

The population growth, the current technological developments and advances have led to an increase in the need for electrical energy, both for household, commercial and industrial electricity scales. the power plants used in electric power systems are mostly thermal power plants. thermal power plants operate with fuels that are generally fossil fuels such as gas, oil and coal, thus it needs special attention. gas emissions caused by thermal power plants can be nitrogen oxides (nox), sulfur dioxide (so2), and carbon dioxide (co2). these exhaust emissions have an impact on the surrounding environment and will contribute significantly to greenhouse gas emissions and global climate change. this research has an important purpose regarding the calculation of emissions of a plant, so it can minimize the exhaust emissions caused by power plants. in this study, emission dispatch was completed using the quadratic programming method in gams software and has been successfully tested using ieee 30 bus system data and the java-bali 500 kv system. if the quadratic programming method was compared to other emission dispatch methods, namely the lambda iteration method and the flower pollination algorithm method, especially in the java bali 500 kv system, the quadratic programming method is the best method for emission dispatch problems. keywords: thermal power plant, emission dispatch, quadratic programming