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Lilipaly, Eka Rahmat Mahayani Anthonio Putera
Politeknik Negeri Ambon
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Micro Hydropower Potential Assessment for Sustainable Tourism Electrification: A Case Study of Taeno Waterfall, Ambon Lilipaly, Eka Rahmat Mahayani Anthonio Putera; Wattimena, Sefnath J; Sarwuna, Sefnath J Etwan; Tupamahu, Cendy S E; Nara, Obednego Dominggus; Latumaerissa, Hendrik Simon; Aprilyanto Khouw; Rumalatu, Gilbert A; Hatuwe, Azmain N
International Journal Multidisciplinary Science Vol. 5 No. 1 (2026): February: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v5i1.2637

Abstract

This study evaluates the technical and economic feasibility of micro hydropower development at Taeno Waterfall, Ambon, Indonesia, to support sustainable tourism electrification. Hydrological assessment was conducted using 10-year rainfall data (2014–2023) combined with the National Rural Electric Cooperative Association (NRECA) method to estimate streamflow in the absence of long-term discharge measurements. The results indicate an average annual rainfall of approximately 3619.92 mm and an estimated average discharge of 0.70 m³/s. Flow duration curve analysis produced dependable flows of Q50 = 0.63 m³/s, Q80 = 0.35 m³/s, and Q90 = 0.28 m³/s, confirming adequate water availability for year-round micro hydropower operation. Hydraulic analysis showed a gross head of 24 m with a net head of 22.44 m after accounting for friction and minor losses. Using a design discharge of 0.35 m³/s and an overall efficiency of 75%, the estimated electrical power output is approximately 58 kW, classified as micro hydropower. A crossflow turbine was identified as the most suitable technology due to its compatibility with medium-head and moderate-flow conditions, operational flexibility, and cost effectiveness. Estimated electricity demand for tourism facilities is approximately 30 kW peak load with annual consumption of 66 MWh, indicating that the proposed system can fully meet demand with surplus energy for future expansion. Economic analysis using the Indonesian electricity tariff of 0.086 USD/kWh yields an annual benefit of approximately 19,278 USD and a payback period of about 12 years. The findings demonstrate that Taeno Waterfall possesses strong potential for sustainable renewable energy implementation to support tourism development and local energy resilience.
Utilization of Diatom Frustule Waste from Navicula sp. TAD as Photoelectrode Material for Enhancing the Efficiency of Dye-Sensitized Solar Cells (DSSC) Telussa, Ivonne; Tehubijuluw, Hellna; Lilipaly, Eka Rahmat Mahayani Anthonia Putera; Malle, Dominggus; Amarduan, Riona Magdalena
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.632-642

Abstract

Navicula sp. TAD is a microalga with silica-based cell walls, offering potential to improve photon interaction in dye-sensitized solar cells (DSSCs). This study combined Navicula sp. TAD frustules with TiO2 to fabricate DSSC working electrodes. The objectives were to isolate and characterize the frustules, optimize the TiO2–frustule ratio, and evaluate photoelectric performance. The workflow consisted of cultivating Navicula sp., isolating pigments and frustules, fabricating solar cells with varied electrode compositions, and performing photoelectric testing under a solar simulator. Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM) analysis confirmed that the frustules possess nanoporous surfaces and exhibit Si–O–Si and Si–OH functional groups. Electrodes incorporating TiO2–frustule blends showed compact pore networks, along with additional functional groups. Performance screening across compositions identified an optimal TiO2–frustule ratio of 40:60, which delivered an efficiency of 10.51%, a short-circuit current density of 0.673 A, an open-circuit voltage of 301.8 mV, and a fill factor of 0.32. These findings indicate that frustule-enabled light management and surface chemistry can jointly enhance dye loading and charge collection in DSSC photoanodes relative to TiO2 alone.
Co-Authors Alfa Musa Imanuel Efruan Alfa Musa Imanuel Efruan Amarduan, Riona Magdalena Aprilyanto Khouw Arun setiawan Away, Hyzkia Berthy Pelasula DOMINGGUS MALLE Edison Effendi Edison Effendi Edison Effendy Effendy, Edison Eirene G. Fransina Eirene G. Fransina Eka Adhitya Dharmawan Eka Adhitya Dharmawan Erwin Bravor Pattikayhatu Hatuwe, Azmain N Hatuwe, Azmain Noor Hellna Tehubijuluw Ivon Telussa Ivonne Telussa Kartikasari, Pinky Karyani, M.Said Latuihamallo, Threbelin Anacovic Lawdrian Latumaerissa, Hendrik Simon Leslie S Loppies Maahury, Mirella Fonda Mahubessy, Nurul Fadhila Marasabessy, Salman Nara, Obednego Dominggus Nevada. J. M. Nanulaitta Pelasula, Berthy Penaonde , Astri Riany Pormes, Ludwina Rumalatu, Gilbert A SAMUEL M. TARIBUKA Sarwuna, Sefnath J Etwan setiawan, Arun Tanasale , Matheis F. J. D. P Telussa, Ivon Tetelepta, Noce Novi Tupamahu, Cendy S E Umayyah, Nissaeryn Zahro Wattimena, Sefnath J