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All Journal Bulletin of Electrical Engineering and Informatics Proceeding of the Electrical Engineering Computer Science and Informatics EKONOMIKA SYARIAH : Journal of Economic Studies
Wati Wati
STKIP PGRI Sumatera Barat
Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering

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Techno-economic-enviro optimization analysis of diesel/PV/wind with pumped hydro storage for Mentawai Island microgrid Syafii Syafii; Wati Wati; Rahmad Fahreza
Bulletin of Electrical Engineering and Informatics Vol 10, No 5: October 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i5.3167

Abstract

This paper presents a techno-economic analysis and environment assessment of hybrid photovoltaic (PV), wind turbine (WT), and diesel genset (DG) with pumped hydro storage (PHS) for a rural microgrid system. The analysis is carried out for a case study with Mentawai community load demand of 165.44 kWh/day at a peak load of 20.46 kW. The Homer simulation results show that there are eight feasible configurations, which the optimal hybrid system configuration to supply community load is the configuration with PV/DG/PHS. An optimal system has been achieved for the lowest NPC of Indonesian rupiah (IDR) 3,00 B consist of 15 kWp PV modules, 1 unit of PHS and a solar inverter with a size 25 kW. The net present cost and payback period are in accordance with criteria for the economic feasibility analysis method of a project. However, the cost of energy is greater than the electrical utility tariff, but this value can be considered for applications in the remote island area. Therefore, the project still feasible to be implemented. Since the renewable fraction of the system is increased hence this proposed system will have the lowest carbon emission.
Feasibility Study of Rooftop Grid Connected PV System for Peak Load Reduction Syafii Syafii; Novizon Novizon; Wati Wati; Dona Juliandri
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 5: EECSI 2018
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.777 KB) | DOI: 10.11591/eecsi.v5.1652

Abstract

This paper presented the economic feasibility analysis of grid-connected photovoltaic on the roof of building, to reduce peak electrical demand. The Engineering Faculty electrical system is used as case study of PV system economic feasibility. The economic calculation assumptions used are: electricity tariff IDR 1114.74 per kWh based on electricity tariff for medium voltage load, estimated annual module degradation 0.5% and the life expectancy of the solar panels 25 years. The interest rate using of Bank Indonesia (BI) rate for 2018 i.e. 4.25% and inflation rate 3% also considered. The initial investment required to build 117.5 kWp PV system is IDR 2,413 million. The operational and maintenance costs are estimated 1% of initial investment per year. The result of cash flow rate shows that a positive NPV is achievable and payback period less then solar panels life expectancy. The simple payback period is 11 years and discounted payback period calculated by consider multiple parameters to be 14 years. The result of economic analysis using current rate value indicate that the project is profitable.
Analisis Biaya Produksi dan Keuntungan Bagi Peternak Muslim di Kawasan Sentra Produksi (KSP) Payakumbuh Sumatera Barat Deltri Apriyeni; Wati Wati; Meri Rahmania
EKONOMIKA SYARIAH : Journal of Economic Studies Vol 4, No 2 (2020): Juli-Desember 2020
Publisher : Universitas Islam Negeri Sjech M. Djamil Djambek Bukittinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (563.735 KB) | DOI: 10.30983/es.v4i2.3730

Abstract

This study aims to describe the advantages of the Payakumbuh Production Center Area (popular as  KSP) as a suitable production area in terms of production cost efficiency and business profits obtained by Muslim stockbreeder in the Payakumbuh area of West Sumatra. The study was conducted on Payakumbuh KSP and as comparative data taken business locations that are outside Payakumbuh KSP. The data used are primary data obtained from laying hens breeders. The total number of breeders in the KSP location was made as research objects i.e. 67 people and as a comparison data using 67 farmers who had business locations outside the KSP. The analyszed data using statistics with different test formulations between the two business locations. The results showed that there was no characteristic difference between breeders who tried at the Payakumbuh KSP business location and outside the Payakumbuh KSP. Based on the difference test between the two business locations, there is a significant difference in production costs and business profits obtained between breeders located on the Payakumbuh KSP and outside the Payakumbuh KSP. This study recommends the importance of the Payakumbuh KSP in determining the sustainability of the business run by breeders. Penelitian ini bertujuan untuk memaparkan keunggulan Kawasan Sentra Produksi (KSP) Payakumbuh sebagai kawasan produksi yang sesuai dari segi efisiensi biaya produksi dan keuntungan usaha yang diperoleh para peternak muslim di daerah Payakumbuh Sumatera Barat. Studi dilakukan di KSP Payakumbuh dan sebagai data pembanding diambil lokasi usaha yang berada di luar KSP Payakumbuh. Data yang digunakan merupakan data primer yang diperoleh dari peternak ayam petelur. Jumlah total peternak di lokasi KSP dijadikan sebagai objek penelitian yaitu 67 orang dan sebagai data pembanding menggunakan 67 peternak yang memiliki lokasi usaha di luar KSP. Data dianalisis menggunakan statistik dengan formulasi uji yang berbeda antara dua lokasi usaha. Hasil penelitian menunjukkan bahwa tidak ada perbedaan karakteristik antara peternak yang mencoba di lokasi usaha KSP Payakumbuh dengan di luar KSP Payakumbuh. Berdasarkan uji beda antara kedua lokasi usaha, terdapat perbedaan yang signifikan antara biaya produksi dan keuntungan usaha yang diperoleh antara peternak yang berada di KSP Payakumbuh dan di luar KSP Payakumbuh. Studi ini merekomendasikan pentingnya keberadaan KSP Payakumbuh dalam menentukan kelangsungan usaha yang dijalankan oleh para peternak.
Co-Authors Apriyeni, Deltri Dona Juliandri Meri Rahmania Novizon, Novizon Rahmad Fahreza Syafii Syafii Syafii Syafii