Graphene adalah material baru yang ditemukan tahun 2004 secara sederhana oleh Andre Geim dan Konstantin Novoselov dengan menggunakan selotip yang direkatkan dengan karbon sehingga didapat lapisan dengan orde nanometer dari karbon tersebut. Graphene memiliki keunggulan mobilitas muatan yang tinggi dan memiliki konduktivitas listrik dan panas lebih baik dari material yang lain. Terutama dalam pembuatan super kapasitor yang dapat menyimpan muatan listrik. Penelitian ini Bertujuan untuk merancang superkapasitor dengan bahan dari graphene, activated carbon, polyurethane dan phosporic acid (H3PO4) dan menganalisi muatan listrik dan tegangan yang tersimpan selama pengecasan berlangsung, pada percobaan pertama pengecasan selama 1 menit dengan tegangan yang tersimpan 1,8volt dan tegangan akan habis selama 50:20,2 menit, maka voltase yang turun setiap detiknya 0.0006 v/s pada percobaan ke dua pengecasan selama 2 menit dengan tegangan yang tersimpan 1,8volt dan tegangan akan habis selama 58:28,8 menit, maka voltase yang turun setiap detiknya 0.0005 v/s pada percobaan ketiga pengecasan selama 60:24 menit dengan tegangan yang tersimpan 2volt dan tegangan akan habis selama 180:18,4 menit, maka voltase yang turun setiap detiknya 0.000185 v/s penelitian tersebut dapat disimpulkan bahwa superkapasitor memiliki muatan tegangan yang kecil tetapi memiliki daya simpan yang lama.

Jumlah sampah yang berlebihan dapat diatasi dengan cara daur ulang. Sebelum melakukan daur ulang, limbah harus disortir terlebih dahulu. Pemilahan sampah secara otomatis dalam jumlah besar dapat dilakukan dengan menggunakan sensor infra merah, sensor logam, dan sensor cahaya. Hasil pengujian menunjukkan bahwa pemilahan sampah otomatis dapat memilah sampah sesuai jenisnya. Namun masih ada kesalahan berupa limbah yang macet dan deteksi kesalahan oleh sensor.

Penyaluran tenaga listrik baik dari Pembangkit sampai ke Gardu induk sampai ke konsumen harus diperhatikan keandalan dan efisiensinya, agar tenaga listrik yang tersalurkan berkualitas dan memiliki kontinuitas yang baik. Guna menjaga kualitas tenaga listrik agar tetap andal dan efisien serta agar kontinuitas penyaluran tenaga listrik tetap terjaga dengan baik, beberapa komponen peralatan penyaluran tenaga listrik harus menjadi perhatian untuk mencegah terjadinya gangguan terhadap peralatan tenaga listrik. Salah satu gangguan pada peralatan tenaga listrik adalah titik panas (hot point). Seringnya terjadi gangguan tersebut  pada titik pertemuan antara klem dan konduktor pada peralatan listrik menjadi tolak ukur pemeliharaan dalam penyediaan tenaga listrik. Tindakan pencegahan agar tidak terjadinya hot point disebut thermovisi, dengan menggunakan alat ukur thermal imagers. Prinsip kerja thermal imagersadalah merefleksikan cahaya infrared terhadap peralatan kemudian menangkap suhu peralatan tersebut dan menampilkannya pada sebuah display. Kegiatan thermovisi dilakukan secara rutin sebagai kegiatan monitoring pemeliharaan tenaga listrik yang kemudian dilakukan analisa hasil thermovisi tersebut dengan melakukan perhitungan emisivitas melalui pendekatan selisih suhu klem dan konduktor (∆T) agar didapatkan nilai emisivitas yang sesuai.Selanjutnya dilakukan uji validasi untuk menguji keakuratan dan presisi dari hasil thermovisi tersebut.Penelitian yang dilakukan di GI 150 kV Glugur bertujuan untuk merekomendasikan hasil uji analisa matematis terhadap tindak lanjut kondisi peralatan. Hasil dari kondisi peralatan pada analisa 30 sampel menunjukan bahwa peralatan masih dalam kondisi baik dan masih layak digunakan, dengan nilai akurasi sebesar 98,02% dan presisi sebesar 0,25% pada peralatan bay penghantar Glugur - Paya Geli 1 serta nilai akurasi pada bay penghantar Glugur – Paya Geli 2 sebesar 97,9% dan 0,24% pada nilai presisinya.

The sun shines on the territory of Indonesia for about 10 to 12 hours every day, so that solar power plants can be developed in Indonesia, the government has launched the movement of one million PLTS roofs in 2017, this research uses solar panels with a capacity of 200 Wp, which consists of 2 solar panels connected in parallel, solar charge controllers, batteries, inverters and as an AC load a fan, soldering iron and LED lights, the research aims to determine the output current, voltage and output power of the inverter when given an alternating current load that is inductive, resistive and capacitive, the method used is to measure the intensity of the sun, temperature, voltage, electric current, power factor, when the load is large the voltage drops depending on the given load, the inductive fan load has a voltage drop that is greater than the voltage drop that occurs in the soldering load and the LED lamp, the large current flowing on the output side fan load wants to be bigger than output current flowing in the solder and LED lights, the low efficiency of the inverter used can shorten the life of the electrical equipment used.

Many automatic machines implemented in the processing of palm oil in the industry are less effective in working on a heating control process in the jacket water system. With the ATMega, 328 Arduino Uno microcontroller control system as an Arduino program input and output controller and “C” language, a servo motor as output (valve) is controlled, and LCD as a display device for LM35 temperature detection can make it easier for workers to control the process of controlling water temperature on the jacket and can avoid failure in the process of melting the palm oil from the previous processing so that the oil in the pipeline continues to flow. The method used in this research is the design method that consists of several stages, namely, (1) Requirement analysis, (2) Design, (3) Implementation of the circuit, (4) Testing Procedures and (5) Testing tools. The level of accuracy of the rotation degree of the servo motor (as a valve) qualifies 100% (>35 °C and ≤ 49 °C, the motor rotates 40o), the relationship between temperature and the rotation speed of the servo motor qualifies with 100% accuracy (>50 °C and ≤ 53 °C then the motor rotates 80 °C) The overall performance of this tool can work well and calibration of the detection temperature value between the LM35 sensor with a thermometer has a difference of 1 mV so that it can be implemented by adjusting devices in the industry.

All economic activities require energy and are natural energy sources that can be utilized as much as possible by the community for prosperity and sustainable development. The potential for renewable/sustainable energy in Indonesia is very large and its utilization has not been maximized. Consumption of sustainable energy according to current data is still very low, this is because it is still dominated by fossil energy. This study aims to analyze the effects of economic growth, population, and subsidized energy, as well as their impact on sustainable energy development. Based on the secondary data used in this study obtained from World Energy, the Indonesian Ministry of Finance, which was obtained in the previous three years (2018-2021). This analysis uses a multiple linear regression model and the results of this research model show that economic growth on population growth does not show a major influence on sustainable energy consumption in Indonesia for three years, fossil fuel energy consumption shows a positive and significant effect on sustainable energy consumption in Indonesia.

As we know, the need for electrical energy is increasing along with population growth and technological developments. This increase was also triggered by the growth rate of the energy demand of 6.86% per year. Most of the energy needs come from non-renewable energy, which has limitations and is not environmentally friendly. Despite being affected by Covid, this period is a momentum to start the direction of clean energy policies. The utilization of solar power can be started by utilizing a rooftop solar power system on the roof of a hotel or on the roof of other industrial buildings. As one of the research and development institutions in the housing and settlement infrastructure sector, it tries to provide alternative technology solutions through an innovative technology called PV-roof. The results of the research show that the designed roof off-grid has an average voltage and current on the first day of 13 Volts and a current of 1.8 A, and on the second day, 12.4 Volts and a current of 1.6 A, while on the third day, 12.8 Volts and current of 1.8 A. If the use of 1 battery bears a load of 450 Watts for 2.7 hours, then for users less than 5 hours, the solar charger controller capacity is 12.12 A.

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