<![CDATA[In recent years, Indonesia has experienced a significant increase in LPG consumption, resulting in a greater dependence on imports to fulfill domestic energy demand and contributing to higher gas prices. One potential solution to support energy availability is the utilization of biomass resources as biogas. Goat manure is one of the abundant biomas wastes with considerable potential to be converted into renewable energy. This study aimed to design and evaluate a biogas digester system utilizing goat manure as an alternative energy source for cooking purposes. The study employed an experimental method by designing and operating a biogas digester filled with a mixture of goat manure and water. The substrate composition used a ratio of 1:2, consisting of 1 kg of goat manure mixed with 2 liters of water in a digester with a capacity of 0.121580 m³. The fermentation process was conducted for 33 days. The performance of biogas production was evaluated through measurements of manometer column height differences to determine biogas pressure, observation of gas volume development, calculation of total biogas volume produced, and combustion testing. The results showed that biogas production occurred from day 6 to day 33, with a total accumulated biogas volume of 0.239512 m³. The produced biogas was successfully ignited during the combustion test, producing a blue flame. This result indicates that the methane concentration met the minimum requirement of 20%, confirming the successful production of combustible biogas.]]>
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