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The emergence of Internet of Things (IoT) technology has opened up considerable possibilities for automation systems aimed at enhancing energy efficiency in both home and office settings. This study focuses on the creation and deployment of an IoT-driven Smart Home system utilizing ESP32 for the automatic and manual supervision and regulation of electrical appliances within the Employee Dormitory of the Institute for Lecturer Performance Development (LPKD). The established system employs a Passive Infrared (PIR) sensor for detecting human presence and a Light Dependent Resistor (LDR) sensor to assess the intensity of light in the room. The data from these sensors is analyzed by the ESP32 microcontroller, which controls lights and fans automatically through relay modules based on the surrounding conditions. Furthermore, the system is linked to the Blynk application and the Telegram Bot API to enable remote operation and immediate notifications. The methodological approach taken in this research is Research and Development (R&D) employing a prototyping method. The assessment outcomes show that the system functions reliably, with success rates for sensor detection and appliance management exceeding 95%. The introduction of this system aims to boost electrical energy efficiency, improve user experience, and facilitate the adoption of IoT-centered smart facility management within the LPKD framework.

Electricity service quality depends not only on physical network expansion but also on the availability of accurate, traceable, and spatially integrated asset data. This study aims to formulate an infrastructure inventory plan for electricity distribution networks as a basis for optimizing electricity services in Musi Rawas Regency, Indonesia. A descriptive-technical approach was applied using administrative maps, spatial planning documents, distribution network maps, feeder single-line diagrams, January 2026 customer data, bill of quantity documents for electricity and public street lighting, and the planned network drawing for Mandi Aur Village. The results show that 14 target districts served approximately 101,932 customers, consisting of 78,564 postpaid and 23,368 prepaid customers. Tugumulyo, Megang Sakti, Muara Kelingi, and Muara Lakitan represented the largest customer concentrations and should be prioritized for detailed asset verification. The proposed inventory object includes medium-voltage lines, low-voltage lines, poles, distribution transformers, protection equipment, public street lighting, panels, and operation-worthiness documents. The inventory database should include unique asset codes, coordinates, feeder identity, specifications, physical condition, photographs, operational status, and follow-up actions. Spatial inventory is expected to improve maintenance planning, outage response, public lighting management, safety control, and evidence-based network development.

The development of electric vehicle technology has encouraged the use of electric bicycles as an environmentally friendly and energy-efficient mode of transportation. One of the main components of an electric bicycle is the hub BLDC (Brushless Direct Current) motor, which is considered more efficient because it is directly integrated into the wheel without requiring a chain transmission system. However, the performance of the hub BLDC motor is affected by operating conditions, particularly variations in load and speed, which influence current consumption and overall electrical performance. This study aimed to analyze the effect of load and speed variations on the current consumption of a hub BLDC motor. A quantitative experimental method was employed by conducting direct tests on an electric bicycle using load variations of 50 kg, 60 kg, and 70 kg, as well as speed variations of 30 km/h, 35 km/h, and 40 km/h. Current measurements were carried out in real time using a PZEM 051 sensor, and the collected data were analyzed using average values obtained from repeated measurements. The results showed that increasing the load and speed led to higher current consumption of the hub BLDC motor, from 4.6 A to 5.0 A under load variation and from 4.5 A to 5.1 A under speed variation. These findings indicate that both load and speed significantly affect the electrical current required by the hub BLDC motor, demonstrating that greater operating demands result in higher energy consumption.

Penerangan Jalan Raya Umum Tenaga Surya / solar cell (PJUTS) adalah alternatif yang digunakan sebagai sumber energi listrik. Cahaya matahari adalah sumber energi yang sangat penting dimana panel surya menerima cahaya matahari dengan kemudian diubah menjadi energi listrik melalui proses photovoltaic. Lampu penerangan di kampung / di area jalan Tubanan Baru Surabaya masih terdapat ruas jalan yang masih kurang pencahayaan / penerangan terutama saat malam hari, oleh karena itu diperlukan rancangan PJUTS. Metode digunakan dengan cara kuantitatif dari sumber yang diperoleh. Penelitian dilakukan untuk mengetahui sudut kemiringan stang ornamen, menentukan jenis tiang, perhitungan daya lampu berbasis LED, intensitas cahaya sebesar 353,3 cd, efisien cahaya K=1,401 dan efikasi cahaya 104,65 lm/watt.

Paper ini mempresentasikan pengembangan sebuah fuzzy logic controller (FLC) untuk menggantikan automatic voltage regulator (AVR) sebagai fungsi eksitasi. Metode yang digunakan pada paper ini merupakan teknik analisa root locus sistem linier untuk respon regulasi dinamis  mesin sinkron yang berhubungan ke infinite bus. Simulasi dilakukan untuk membandingkan respon stabilitas transien  tegangan terminal (terminal voltage), sudut beban (load angle) serta torsi kelistrikan (electrical torque). Karakteristik kurva yang dihasilkan akan menunjukkan perbaikan yang signifikan dengan menggunakan FLC.

Kompleksitas subsistem elektromekanis pada sistem Radiografi Digital (DR) menuntut pendekatan diagnostik yang terstruktur untuk mencegah waktu henti yang lama dan menghindari pembongkaran yang tidak perlu. Penelitian ini bertujuan untuk menerapkan prinsip Deteksi dan Isolasi Kerusakan (FDI), dengan menggunakan metode isolasi blok, guna mendiagnosis dan mengatasi gangguan pada sistem pengunci magnetik meja pasien pada unit Philips SRO 33100. Pendekatan FDI diterapkan dengan memisahkan blok kontrol listrik dari blok aktuator mekanis secara sistematis, serta melakukan analisis perbandingan terhadap dua aktuator yang identik. Pengukuran listrik menunjukkan bahwa kedua unit kunci magnetik kiri dan kanan menerima tegangan masukan normal sebesar 23,48 V. Perhitungan koreksi relatif menghasilkan nilai 2,5%, yang masih berada dalam batas toleransi aman sebesar 10%, sehingga mengonfirmasi integritas blok kontrol listrik. Namun, analisis perbandingan mengungkapkan ketidakhadiran respons mekanis yang lengkap pada unit kiri, memungkinkan kesalahan diisolasi secara tepat ke kegagalan aktuator internal tanpa membongkar sirkuit kontrol yang utuh. Berdasarkan diagnosis definitif ini, tindakan korektif diambil melalui penggantian komponen dan kalibrasi penyesuaian celah. Uji fungsional pasca-perbaikan mencatat tegangan operasional stabil sebesar 23,45 V dan menunjukkan respons mekanis yang sepenuhnya sinkron, memulihkan gerakan mengambang empat arah. Studi ini menunjukkan bahwa kerangka kerja isolasi blok berbasis FDI yang diusulkan menyediakan strategi yang efektif dan berbasis bukti untuk mengidentifikasi kegagalan elektromekanis, sehingga meminimalkan kebutuhan akan prosedur pemecahan masalah yang invasif. Akibatnya, pendekatan ini merupakan metode diagnostik yang sangat efektif yang menghilangkan kebutuhan akan pembongkaran yang luas, menawarkan kerangka kerja yang andal yang dapat diterapkan secara luas untuk pemecahan masalah peralatan medis lainnya.

Dredger operations in water-based mining areas have a high occupational risk because they involve a combination of wet environments, mechanical equipment, and electrical systems. The presence of electrical panels, power cables, terminal connections, electric motors, inverters/drives, and protection components on the Dredger requires a sound understanding of Occupational Health and Safety, particularly electrical safety. Water splashes, wet walking surfaces, high humidity, and improper procedures during inspection or cleaning may increase the risk of short circuits, protection trips, and electric shock. Therefore, structured basic safety training is required so that operators are able to identify electrical hazards and implement safe working procedures. This activity aimed to improve operators’ understanding of hazardous electrical components, initial safety briefing procedures, measurement practice and safe handling during trips or short-circuit indications, and the correct and safe use of water pumps for unit cleaning. The activity was carried out through field observation, technical briefing, direct demonstration on the electrical panel and work area, simple measurement practice, and safe cleaning practice. The results indicate that field documentation can serve as an effective learning medium to strengthen operators’ understanding of electrical hazard sources on the Dredger, the application of simple lock out-tag out procedures, the control of wet areas, and the limitation of water spray direction during cleaning activities. Overall, the activity shows that improved compliance with safety procedures may reduce the risk of short circuits and electric shock during operation and maintenance.

The availability of a reliable backup power source is essential for supporting the operational continuity of the Indonesian National Army Fuel Filling Station (SPBT) at the Naval Academy (AAL). Interruptions in the main electrical supply can disrupt fuel distribution activities and reduce operational readiness. This study aims to determine the most appropriate emergency generator as a backup power source for SPBT AAL using the Analytical Hierarchy Process (AHP) method. Data were collected through observations, interviews, documentation, and questionnaires administered to experts with competencies in electrical systems and operational management. The evaluation was based on three criteria: purchase cost, spare parts availability, and ease of maintenance. Five generator alternatives were assessed, namely Cummins C10D6, Yanmar YTG10S, Traknus PL15P-SS, Honda EM10000, and Yamaha EF12000E. The results indicate that ease of maintenance is the most influential criterion with a priority weight of 0.627, followed by spare parts availability at 0.280 and purchase cost at 0.094. The global priority ranking shows that Yanmar YTG10S achieved the highest score of 0.438, making it the most suitable emergency generator for SPBT AAL. Furthermore, the consistency ratio (CR) values were below 0.10, indicating that the respondents’ judgments were consistent and that the results are valid for decision-making purposes.

This study examines the effectiveness of collaborative governance at the Benowo Waste to Energy facility following the 2025 Surabaya administrative court ruling. The facility represents a policy paradox where the success of the public private partnership scheme in attracting hundreds of billions of rupiah in investment is accompanied by escalating social conflicts and information transparency disputes. Utilizing a descriptive qualitative method based on field research this study dissects the collaborative failure through the theoretical framework of Ansell and Gash. Data collection was conducted through in depth interviews with government officials private operators environmental activists and affected residents. The analysis results indicate that the collaboration failed structurally due to severe power asymmetry since the initial planning phase. This failure was exacerbated by a flawed institutional design that legitimized bureaucratic information centralism and the dysfunction of facilitative leadership by the local government which prioritized investment stability over the fulfillment of citizens ecological rights. Ultimately the interaction process at the grassroots level was reduced to a transactional relationship where corporate social responsibility programs were merely used as instruments of social pacification to suppress temporary protests. This research concludes that the Benowo facility operates under a highly fragile closed governance model that sacrifices public legitimacy. As a solution the researcher recommends the need for an institutional design reconstruction that integrates guarantees of environmental justice and mandatory independent information transparency in future green infrastructure projects.

This study analyzes an innovative, energy-efficient chicken egg incubator made from Styrofoam waste, developed within the 2024 Appropriate Technology Competition Program in Sidoarjo Regency. The aim of this study was to explore the diffusion of this energy-efficient Styrofoam-based chicken incubator, its background, benefits, process, and challenges and supporting factors in its implementation. A qualitative case study method was used, involving structured interviews with the innovation owner, the tool user, and the competition organizer, direct observation, and document analysis. The results indicate that the innovation is effective in reducing electricity consumption, lowering production costs, and increasing hatching rates by 80–100%. The incubator is easy to use, affordable, and environmentally friendly. It also contributes to community empowerment by supporting small-scale poultry farming. Despite initial public skepticism regarding the innovation as a “Misguided Sect” and limited institutional support, it’s practicality. and efficiency have led to its widespread acceptance. The innovation demonstrates the potential of local, low-cost solutions to promote sustainable rural development.

Penelitian ini menganalisis praktik akuntansi keberlanjutan pada Arif Barbershop, sebuah usaha mikro, kecil, dan menengah (UMKM) di Jombang, Jawa Timur, Indonesia. Dengan menggunakan pendekatan studi kasus kualitatif, penelitian ini mengeksplorasi bagaimana barbershop menerapkan prinsip Environmental, Social, dan Governance (ESG) dalam operasional sehari-hari. Data dikumpulkan melalui wawancara mendalam dengan pemilik usaha dan dianalisis menggunakan analisis tematik. Temuan menunjukkan bahwa Arif Barbershop telah menerapkan praktik lingkungan dasar seperti pengelolaan limbah rambut melalui kantong plastik ke tempat pembuangan sampah, serta efisiensi energi dengan mematikan peralatan listrik setelah jam operasional. Dari aspek sosial, barbershop menjaga kepuasan pelanggan melalui konsistensi kualitas layanan dan sistem bagi hasil (60:40) kepada karyawan. Praktik tata kelola, meskipun bersifat informal, mencakup pencatatan keuangan sederhana menggunakan buku biasa. Namun demikian, barbershop belum memiliki izin usaha formal dan belum menerapkan kerangka akuntansi keberlanjutan yang terstandar. Penelitian ini menyoroti bahwa UMKM dapat mempraktikkan akuntansi keberlanjutan secara intuitif, dan menyarankan perlunya program pelatihan serta alat pelaporan yang disederhanakan.

Electricity dependence is increasing as people have easier access to electronic devices. However, this ease of access is not always accompanied by adequate energy literacy. In its Community Service program, Universitas 17 Agustus 1945 Jakarta helped to educate the residents in RW06 Kalibaru, Jakarta, about the safe and efficient use of electricity. This community service program was conducted through participatory seminar with a qualitative approach for residents. The activity used informal visual presentations and discussions in an informal atmosphere. The outreach program demonstrated residents' high enthusiasm for the efficiency of electrical equipment usage such as air conditioners, refrigerators, and water pumps. Through the discussion session, residents realized that using air conditioners with too low a power consumption actually leads to higher energy consumption because the compressor runs continuously. Participants understood that investing in automation concepts, such as using water reservoirs, provides significant long-term electricity cost savings. This outreach successfully shifted residents' paradigm from just simply seeking low prices to selecting devices with optimal capacity according to their needs. This education program demonstrates the effectiveness of energy literacy in improving electricity consumption habits at the household level. Therefore, simple technical understanding can boost family economic financial advantages through sustainable effective energy consumptions.

Boiler merupakan komponen vital dalam operasional Pemnagkit Listriik Tenaga Sampah, Dimana sampahmenjadi bahan bakar Utama yang diolah menjadi panas yang dipergunakan untuk mendidihkan airdidalam boiler. Operasional boiler memerlukan pengawasan ketat terhadap parameter suhu, tekanan, danlevel air untuk mencegah risiko kecelakaan kerja dan inefisiensi energi. Namun, sistem pemantauankonvensional seringkali masih bergantung pada pengecekan manual yang berisiko terjadi kesalahanmanusia (human error). Penelitian ini bertujuan untuk merancang dan mengimplementasikan sistemkontrol otomatis boiler berbasis Internet of Things (IoT) menggunakan mikrokontroler ESP32 sebagai unitpemroses utama. Sistem ini dilengkapi dengan sensor suhu, sensor tekanan, dan Level Switch untukmendeteksi level air secara real-time. Data dari sensor dikirimkan ke aplikasi Blynk melalui jaringan Wi-Fi, yang memungkinkan operator melakukan pemantauan dan pengendalian jarak jauh melaluismartphone. Hasil pengujian menunjukkan bahwa sistem mampu mengotomatisasi pengisian air danpengeluaran uap dengan tingkat akurasi yang tinggi serta latensi pengiriman data yang minimal.Implementasi sistem ini diharapkan dapat meningkatkan standar keselamatan kerja, efisiensi operasional,dan memperpanjang usia pakai komponen boiler melalui pemeliharaan preventif yang lebih akurat.Kata Kunci: Boiler, IoT, ESP32, Sistem Kontrol Otomatis, Monitoring Real-time.

This study aims to analyze and design the electrical installation requirements for a prototype residential building with dimensions of 11 × 19 meters. The research applies a technical calculation approach based on lighting standards, air conditioning capacity estimation, load analysis, and electrical protection planning. Lighting requirements were determined using the lumen method by considering room area, illumination standards, coefficient of utilization, and light loss factor. Air conditioning capacity was calculated based on room area and standard cooling load values in BTU/hr. Furthermore, total electrical loads were analyzed to determine installed capacity, nominal current, Miniature Circuit Breaker (MCB) ratings, and appropriate cable cross-sectional areas with safety factors applied. The results indicate that proper load grouping, appropriate MCB selection, and correct cable sizing significantly enhance system safety and reliability. The study provides a systematic planning model for residential electrical installations that meets safety, efficiency, and technical standards, and can serve as a reference for similar residential building designs.

Education plays a crucial and essential role in improving the quality of human resource globally, thus a research was conducted with the aim of producing a product, namely a learning module. This module is one of the learning resources that can be used by students independently. Therefore, the module was developed to function as a learniing guide for students. The lerning model used in this research is Creative Problem Solving. In this learning model, the teacher presents problems so that students can find answers innovatively and sharpen  their critical thinking skills. The suitability of this learning module will be evaluated based on three aspect, namely validity, practicality, and effectiveness. Based on the research sample data, this consists of students from class XI Electrical Power Installation Techniques (TITL) 1 at SMKN 1 Driyorejo. This method uses the Research & Development (R&D) approach. The analysis of differences in learning outcomes was carried out using the One Group Pretest-Posttest Method, the treatment in the form of a learning module based on the Creative Problem Solving model was given to student. The research result show that (1) the modules suitability is stated as very valid wth a score of 89,60, (2) aspect, it is stataed as very practical with a total average reaching 90,60, (3) effectiveness is proven from the improvement in learning outcomes in terms of knowledge and domains with an average pretest score of 51,3, while the average posttest score is 85 with a significance of 0.000.

The increasing demand for electrical energy each year and the high dependence on fossil energy, which has negative environmental impacts, necessitate the development of alternative renewable energy sources. One potential source that can be utilized is mechanical energy from human activities through the application of piezoelectric technology in paving blocks. In addition, studies on the effect of piezoelectric circuit configurations, particularly comparisons between series and parallel circuits in generating electrical power, are still limited. This study employed an experimental method using a piezoelectric paving block prototype, with testing conducted under a static load of 60 kg. The measured parameters included output voltage and current, which were then used to calculate the generated power. The experimental results show that the parallel circuit configuration produced a higher average electrical power of 1.51 mW compared to the series circuit, which generated an average power of 1.37 mW. The increase in power in the parallel configuration was mainly influenced by the higher output current, while the difference in voltage was relatively insignificant. These findings contribute to determining a more optimal circuit configuration for the development of piezoelectric paving blocks as a renewable energy harvesting system based on mechanical pressure.

This study examines the extent to which West Java Province has achieved Sustainable Development Goal (SDG) 7 on clean and affordable energy in the electricity sector. The study uses a qualitative method with a case study approach to evaluate policies and achievements in terms of energy access, renewable energy use, energy efficiency, and the dynamics of cooperation between government agencies. The results show that the electrification rate in West Java has almost reached 100% thanks to government policies such as the free electricity program for underprivileged communities. However, the share of renewable energy in the province was still around 15% in 2022, which has not yet reached the target of 17% by 2025. Furthermore, energy efficiency is also an important issue because primary energy consumption in West Java increased in 2022. This study emphasizes the need to enhance inter-agency cooperation, innovation in local policies, and political commitment to achieve SDG 7 targets in line with national directives.

This study aims to evaluate the validity, effectiveness, and practicality of developing problem-based teaching materials for improving student learning outcomes. The research focuses on a practical module for the subject of electric motor installation at SMKN 1 Driyorejo, where interviews and needs assessment revealed issues such as teacher-centered learning and limited student resources, primarily relying on notebooks. These factors have hindered optimal learning outcomes. The development of problem-based learning modules was intended to address these issues and improve cognitive, affective, and psychomotor learning outcomes. The research follows a Research & Development (R&D) approach with four steps: 1) Define, 2) Design, 3) Develop, and 4) Disseminate, using a one-shot case study trial design. The study involved 30 students of grade XI TITL 1 at SMKN 1 Driyorejo. Results showed the module’s validity at 3.66, practicality based on student responses at 89.25, and effectiveness with cognitive, psychomotor, and affective outcomes of 84.93, 89.40, and 94.00, respectively. These findings suggest that the problem-based practical module is valid, practical, and effective for improving student learning outcomes across various domains.

The problem lies in the load lock from the wheel arm, the BLDC motor whose distance cannot be adjusted, and the flywheel whose movement is less smooth than the original design. The purpose of refining the design is to obtain smooth movement and the position of the load lock from the wheel arm, the BLDC motor that can be adjusted to be ergonomic and optimal. The method of refining the design and manufacture of the rear shock breaker spring type electric bicycle through the stages of working load analysis, the need for the distance of the load setting position and the BLDC motor, calculating the construction strength, manufacturing components, assembling components, and evaluating the results of the shock breaker manufacture. The results of refining the design and manufacture of the rear shock breaker spring type electric bicycle show that the movement of the load lock position from the wheel arm and the BLDC motor is smooth, the flywheel must be balanced, the dimensions of the shock breaker device are 120 cm long, 49.5 cm wide, 155 cm high, 120 rpm rotation speed, 2 cm shock breaker movement distance, and 1.5 cm sideways movement deviation which implies being able to provide adequate damping for electric bicycle riders well.

The energy that is stored in water can be used to generate electricity by taking advantage of the potential energy available, like the energy from waterfalls and the movement of flowing water. Micro-hydropower plants (PLTMH) are one solution to address the energy crisis, particularly in electricity. VDI 2221 is a method that German engineers use as a guideline when designing construction projects. The VDI (Verein Deutsher Ingeneure or German Engineers Association) design process involves several stages: task description, design concept determination, physical design, and detailed design. Based on the solution principle matrix table, 3 variants were obtained, each of which has criteria. Of the 3 variants that have been evaluated, variant 2 was obtained with results that met the requirements. The cost analysis table shows that the total cost for designing a prototype test equipment for a micro-hydroelectric power plant (PLTMH) based on a laboratory-scale crossflow turbine is Rp 10,032,000. This cost includes instrumentation, control and electrical panels, measuring instruments, pipe instruments, frame and casing, and unforeseen costs.