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All Journal Jurnal SPEKTRUM JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) Journal of Applied Agricultural Science and Technology Jurnal Indonesia Sosial Sains Innovative: Journal Of Social Science Research
I Wayan Sukerayasa
Teknik Elektro Fakultas Teknik Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Neuroscience Physics Public Health Social Sciences Other

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PERANCANGAN PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) PADA ATAP GEDUNG WISTI SABHA BANDAR UDARA INTERNASIONAL I GUSTI NGURAH RAI Purna Suartawan, Gede; Dwi Giriantari, I. A.; Sukerayasa, I Wayan; Ariastina, Wayan Gede; Setiawan, I Nyoman; Satya Kumara, I Nyoman
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p21

Abstract

The installed PLTS capacity in Bali is currently still 3.44% of the target given by the General National Energy Plan (RUEN) of 108 MWp in 2025. The island of Bali has limited land availability so rooftop PLTS is a solution. The design of the rooftop PLTS was carried out on the roof of the Wisti Sabha Building at I Gusti Ngurah Rai International Airport. The research uses PVSyst simulation software while the investment feasibility method uses the Benefit-Cost Ratio (BCR), Net Present Value and discounted payback period (DPP) methods. Based on the simulation results, the rooftop PLTS capacity is 56.6 kWp with energy production of 98,009 kWh/year. The B-CR value obtained is 2.23, the net present value is IDR 707,436,838.55 and the DPP is 7 years, with a rooftop solar system life of 25 years.
Analisis Kelayakan Investasi Sistem PLTS Atap pada Gedung Lecture Building Universitas Udayana Yoga, Ida Bagus Savitar Dharma; Sukerayasa, I Wayan; Setiawan, I Nyoman; Janardana, I Gusti Ngurah; Budiastra, I Nyoman; Suartika, I Made
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i4.20982

Abstract

The use of renewable energy, especially Solar Power Plants (PLTS) is an alternative solution in facing increasing electricity needs and limited conventional energy supply. The Udayana University Lecture Building, which has a high level of operation during the day, is the object of designing a rooftop solar power plant system with an on-grid configuration equipped with a Battery Energy Storage System (BESS). This study aims to evaluate the feasibility of investing in the solar PV system to be designed. The analysis methods used include the calculation of Life Cycle Cost (LCC), Cost of Energy (CoE), Capital Recovery Factor (CRF), Net Present Value (NPV), Internal Rate of Return (IRR), Discounted Payback Period (DPP), and Profitability Index (PI). The results of the investment feasibility analysis showed that the initial investment of IDR 1,298,931,811 resulted in an NPV value of IDR 123,306,233, IRR of 21.01%, DPP for 21.9 years, and PI of 1.09. Thus, this project was declared financially feasible to be implemented.
Perancangan PLTS Atap di Gedung Lecture Building Universitas Udayana Sihombing, Jupael; Sukerayasa, I Wayan; Setiawan, I Nyoman; Janardana, I Gusti Ngurah; Budiastra, I Nyoman; Suartika, I Made
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i4.21043

Abstract

The growing demand for electricity in the Province of Bali is still largely dominated by the use of fossil fuels and coal. This reliance on conventional energy sources contributes to carbon dioxide (CO₂) emissions and greenhouse gases, which in the long term have a negative impact on the environment. To reduce this dependency, the utilization of renewable energy sources such as Solar Power Plants (PLTS) offers an effective and environmentally friendly solution. The Lecture Building at Udayana University was selected as the study object due to its relatively high electricity consumption. The PLTS system design for this building was based on the available roof area, utilizing all four roof sides. Each side is equipped with 32 solar modules rated at 670 Wp per unit, one inverter with a capacity of 25 kW, and 16 battery units each with a capacity of 200 Ah. The system design was simulated using PVSyst software, and with a total installed capacity of 85.76 kWp, the system is capable of generating approximately 515.8 kWh of electricity per day.
Audit Energi pada Gedung Lecture Building Universitas Udayana Nugraha, I Komang Krisna Bayu; Sukerayasa, I Wayan; Setiawan, I Nyoman; Janardana, I Gusti Ngurah; Budiastra, I Nyoman; Suartika, I Made
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i4.21045

Abstract

Increasing electrical energy consumption in the education sector requires efforts to save on campus buildings. This study aims to identify efficiency opportunities in the Lecture Building of Udayana University using the walk-through audit method. Measurements were made on lighting, air conditioning (AC), elevators, and pumps using lux meters, infrared thermometers, and power quality analyzers. The results showed that the biggest savings came from the air conditioning system of 22,965 kWh/month (15.47% efficiency) through temperature and operating time adjustments. The energy consumption intensity (IKE) value was recorded at 54,145 kWh/m²/year for one floor and 18,048 kWh/m²/year for three floors, far below the standard of 240kWh/m²/year. The other system generates technical recommendations to support the sustainable implementation of green campuses.
STUDI PERFORMANCE PLTS ROOFTOP 3KWP FRAMELESS WITH ON-GRID SYSTEM DI LINGKUNGAN PERUMAHAN KORI NUANSA JIMBARAN Agus Ryzky Martha, Gede; Ayu Dwi Giriantari, Ida; Sukerayasa, I Wayan
Jurnal Indonesia Sosial Sains Vol. 3 No. 02 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v3i02.523

Abstract

PLTS rooftop adalah perkembangan teknologi energi terbarukan yang mengkonversikan radiasi matahari menjadi energi listrik dengan sistem fotovoltaik. Bali memiliki karakteristik geografi dan demografi yang minim lahan luas, jumlah penduduk yang cukup besar dengan luasan atap bangunan yang memadai sehingga penggunaan PLTS rooftop dapat dimaksimalkan. Tujuan dari penelitian adalah untuk mengetahui performance PLTS dilihat dari kriteria produksi energi rata-rata selama 6 bulan dengan menggunakan metode analisa unjuk kerja dengan standar IEC 61724, Final Yield, Reference Yield dan Ratio Performance dengan menggunakan metode pengukuran riil dilapangan. Hasil penelitian pada pengukuran sudut kemiringan PLTS dengan Protractor Tool sebesar 18°dengan perhitungan sudut kemiringan optimal PLTS sebesar 14,66°. Radiasi rata-rata 4,39 hour dengan hasil energy yield (YF) 4.518,7 kWh/year, energy ideal (YR) 5.311,79 kWh/year  dengan  Performance  Ratio  (PR)  sebesar  85%. Hal ini telah sesuai dengan standar referensi PR (Performance Ratio) yang ada dimana range antara 70% hingga 90%. Hasil PR menunjukan performance daripada sistem PLTS  baik  karena berada diatas 70% sehingga layak dioperasikan selama 25 tahun atau dibawah 25 tahun.
Adoption of the Theory of Planned Behavior Approach in Exploring the Behavior of Induction Stove Assistance Recipients in Bali Dewi, Sayu Ketut Sutrisna; Sukerayasa, I Wayan; Juliartini, Ketut; Wijaya, I Wayan Arta; Suputra, Gusti Alit; Harahap, Abriansyah
JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS Vol. 5 No. 1 (2025): NOVEMBER
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/jhssb.v5i1.2011

Abstract

Indonesia relies heavily on imported LPG with subsidies often benefiting higher-income groups. The government launched an energy transition program encouraging households to shift from LPG to induction stoves. This study investigates behavioral factors influencing induction stove adoption among assistance recipients in Bali Province, Indonesia's pilot project for the national initiative. Using the Theory of Planned Behavior (TPB) framework, a quantitative survey was conducted with 300 participants selected from 1,002 beneficiaries in Bali. Statistical analyses examined relationships among attitude toward behavior, subjective norms, perceived behavioral control, intention, and actual behavior. Attitude toward behavior, subjective norms, and perceived behavioral control significantly and positively influence adoption intention and behavior. Intention directly predicts actual induction stove use, validating TPB's applicability in this context. The TPB framework effectively explains household behavioral responses to government-led energy transition programs. However, findings are limited to Bali and require cautious generalization to other regions. This research provides policymakers valuable insights for designing effective behavioral interventions to accelerate national induction stove adoption and improve energy transition program outcomes.
Quality Assessment of Used Palm Cooking Oil Processed by Microfiltration Using Whatman Filter Papers with Different Pore Sizes Sari, Poppy Diana; Hartati, Rukmi Sari; Syahrorini, Syamsudduha; Setiawan, I Nyoman; Budiandari, Rahmah Utami; Sukerayasa, I Wayan; Rafdiansyah, Muhammad Ainnur
Journal of Applied Agricultural Science and Technology Vol. 10 No. 1 (2026): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v10i1.496

Abstract

Microfiltration is a preliminary treatment in the production of biodiesel. This method is characterized by its simplicity and its environmental friendliness. It can reduce foam production during the saponification process, which is generally concomitant with the esterification process. Furthermore, microfiltration process does not involve the use of chemicals. The micropore size of the filter greatly influences the quality of the biodiesel produced, given its impact on impurities present in the oil used. The present study sought to determine the effect of microporous membrane size on the quality of used frying oil. The treatment variables in this study were the micropore sizes of the Whatman filter paper used: 2.5 μm, 8 μm, 11 μm, 16 μm, 20 μm, and 25 μm. Meanwhile, the observation variables encompassed the free fatty acid (FFA) content, acid number, viscosity, and water content of the used cooking oil. The findings of the study indicate that the microfiltration treatment employing filter paper with 2.5 μm pore size yielded the best results, with free fatty acid (FFA) level, acid number, viscosity and water content of 0.00238%, 0.411 mg KOH/g, 3.2843 cSt and 0.00068%, respectively. In accordance with the stipulations outlined in the Indonesian National Standard (SNI) 7128:2015, the microfiltered oil obtained in this study is deemed suitable for use as a raw material in biodiesel production.
Co-Authors Agus Ryzky Martha, Gede Ayu Anggasari, Ni Luh Dewi, Sayu Ketut Sutrisna Dimas, Dimas Diva Aristia, Gusti Bagus Dwi Girantari, Ida Ayu Harahap, Abriansyah I Made Suartika I N Satya Kumara I Nyoman Budiastra I Nyoman Satya Kumara, I Nyoman Satya Kumara I Nyoman Setiawan I Wayan Arta Wijaya Ida Ayu Dwi Giriantari Janardana, I Gusti Ngurah Ketut Juliartini Kresna Dharma Yudha, A.A. Gede Nugraha, I Komang Krisna Bayu Paisal, Muhammad Partogi Manalu, Eli Musa Reja Poppy Diana Sari, Poppy Diana Purna Suartawan, Gede Rafdiansyah, Muhammad Ainnur Rahmah Utami Budiandari Rizal Arifin, Ahmad Rukmi Sari Hartati Sihombing, Jupael Suputra, Gusti Alit Syahrorini, Syamsudduha Tjok Gede Indra Partha Wayan Gede Ariastina Widiandika Putra, I Wayan Dicky Wira Dharma, Gede Agus Yoga, Ida Bagus Savitar Dharma Yusuf Firmansyah, Ahmad