In Indonesia and many countries for economic reasons and green energy LPG is widely used for cooking. This paper show implementation and design gas leakage detection system. The main objective of the project to build a gas LPG leakage detector using an LPG gas sensor and micro-controller. It developed a security system by providing an early Warning System to give a sign if there is a smell of gas around Home. If this system has been the existence of leakage and smell of LPG gas, then the system will give a sign of alarm or buzzer where if there is leakage of gas that smelling the LPG system will work and the early warning alarm of the system. That the presence of gas leakage signals on the sensors to work, the MQ-6 is the gas Sensor used to detect leakage gas LPG. The tool is designed to detect gas leaks that are then legible on the LCD screen and alarm, and in certain circumstances, the buzzer will sound. This MQ-6 sensor test is performed by measuring the sensor output with the Atmega8 microcontroller when the LPG gas is detected and then writes it on the LCD screen. This test was conducted to determine the contribution of the MQ-6 sensor. It becomes essential to protect gas leakage from damage and accident.

Excitation system is one of the most important parts of synchronous generators, where the system functions to provide dc power to the field generator coil. Iin this study, a static excitation system consisting of transformers and connected thyristors in bridge configuration has been implemented in synchronous machines that operate as 206,1 mva capacity generators, 16,5 kv using the help of matlab simulink r2017b software. By adjusting the load given to the generator, variations in excitation currents can affect the amount of output voltage generated by the generator so that it can increase and decrease the induced voltage. In full load conditions, namely p = 175 mw, q = 100 mvar, the results of the study show that when the simulation is run at alpha 0 °, it is known that the average value of dc voltage is 496,4 v, excitation current is 1057 a and voltage generator output has increased beyond its nominal voltage of 16,72 kv. in this case, to maintain the terminal voltage, the excitation current must be reduced by increasing the angle of shooting of the thyristor to an alpha angle of 45 °, so that the average dc voltage can be reduced to 479,3 v, as well as the excitation current to 985,9 a. the generator output voltage at the alpha 45 ° angle is obtained according to its nominal value of 1,.5 kv.

The use of renewable energy (EBT) is increasing to achieve the target of 23% by 2025. There needs to be a variety of preparations in welcoming the transition of fossil-based energy to renewable energy. One of them is by improving the quality of human resources that excel in developing the use of renewable energy in Indonesia. Through the Electrical Engineering PkM Team IT-PLN had the opportunity to provide counseling or education to the academic community of MA Al-Khairiyah Rancaranji. The activity is in the form of learning the installation of solar power plant components and the utilization of solar energy in the form of prototype portable plts. The learning improved students' understanding of renewable energy and was able to assemble photovoltaic system components into prototype portable plts with a capacity of 100 WP. Then the tool is tested using a lamp load of 9 watts to find out the amount of current and voltage produced. From this activity, it can be known that the students of MA Al-Khairiyah Rancaranji are very enthusiastic in knowing about renewable energy and can apply it in the surrounding environment.

Kompor merupakan kebutuhan sehari-hari yang digunakan masyarakat sebagai alat untuk menyediakan berbagai makanan guna memenuhi kebutuhan pokok. Penggunaan kompor gas sangat umum digunakan oleh berbagai kalangan karena mudah didapat dan ekonomis (Pemerintah di Indonesia masih mensubsidi tabung gas 3 kg sehingga harganya sangat terjangkau). Namun saat ini pemerintah mendorong masyarakat untuk menggunakan kompor induksi sebagai pengganti dari kompor gas untuk mengurangi impor gas yang selama ini jumlahnya terus meningkat. Pada penelitian sebelumnya dilakukan perbandingan antara penggunaan kompor gas, listrik, dan induksi dengan mengujinya dalam mendidihkan 1 liter air. Pada penelitian ini dilakukan pengujian performa kompor gas dan kompor induksi dalam penggunaannya sehari-hari dengan membandingkan pemakaian energi dan aspek ekonomisnya selama 4 minggu. Dari hasil penelitian yang telah dilakukan menyatakan bahwa pemakaian energi pada kompor induksi dalam 4 miinggu lebih hemat energi dengan pemakaian sebesar 9900,571 kJ dibandingkan dengan kompor gas yaitu 225389,75 kJ di periode waktu yang sama. Namun dari keekonomian, kompor induksi menghabiskan biaya lebih besar yaitu Rp. 4048,45,- dibandingkan dengan kompor gas yang menggunakan gas subsidi yaitu sebesar Rp. 2400,-. Sedangkan untuk biaya pemakaian kompor gas dengan gas nonsubsidi besarnya biaya adalah Rp. 5625,-.

<p>The fossil energy utilization for electricity<br />generation is currently starting to be limited because it is predicted<br />that the availability of fossil energy for the next few decades will<br />run out. Renewable energy is an alternative energy that can be<br />used to generate electricity. Solar power plant is one of the<br />electrical energy generators with renewable energy sources that<br />have been widely used. Solar power plant is a Distributed<br />Generator that can be applied directly to consumers and it is very<br />suitable for use in remote areas which currently still use diesel as<br />a fuel for power generation. In this research, the design of a hybrid<br />power generation system between Soalr Energy and Wind will be<br />carried out to replace the use of diesel as a source of electricity<br />generation. After the generator design is done, then the<br />performance test of the hybrid system will be carried out in order<br />to see the feasibility of the design that has been made. From the<br />test results, the results of the Hybrid Energy Generator have<br />efficiencies ranging from 10-12% where this shows that the power<br />plant system is still said to be unable to work efficiently. The<br />average amount of energy produced from this Hybrid PLT system<br />is 1,304 kWh per day. Based on the results of the economic<br />feasibility analysis, that the use of the hybrid system is able to<br />produce savings of Rp. 1,700 – Rp. 2,100/kWh per day</p>