Assessment of Solar-Powered Irrigation Systems (SPIS) for CY 2025 in NIA-UPRIIS Division VI

Abstract

This study assessed the performance, efficiency, and operational effectiveness of Solar-Powered Irrigation Systems (SPIS) implemented in the National Irrigation Administration–Upper Pampanga River Integrated Irrigation Systems (NIA-UPRIIS) Division VI for Calendar Year 2025. Using a descriptive-evaluative research design, data were collected from 33 respondents, including Irrigators Association members, farmers, and NIA personnel, through structured surveys. The assessment focused on technical specifications, water delivery efficiency, system performance, technical issues, maintenance practices, and comparisons with conventional diesel- or electric-powered irrigation systems. Results indicate that SPIS generally meets technical requirements, delivers consistent water supply, and operates reliably under varying conditions, demonstrating higher cost efficiency and reduced maintenance demands compared with traditional systems. Key technical challenges identified include low water output, panel shading, and limited battery capacity, which may affect performance during periods of low sunlight. Respondents recommended improvements such as incorporating backup power units, enhancing site selection, using durable materials, and implementing regular maintenance schedules. Overall, SPIS proves to be a sustainable and effective alternative for irrigation, supporting agricultural productivity while offering opportunities for further optimisation in design and operation.