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All Journal RESWARA: Jurnal Riset Ilmu Teknik
Yamamoto, Kenji
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Effectiveness Analysis of Rooftop Solar Panels in Reducing Household Electricity Consumption Nainggolan, Ahmad Fajar; Martinez, Laura; Yamamoto, Kenji
RESWARA: Jurnal Riset Ilmu Teknik Vol. 4 No. 1 (2026): RESWARA: Jurnal Riset Ilmu Teknik, January 2026
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/reswara.v4i1.364

Abstract

Household electricity consumption represents a significant share of total energy demand and contributes directly to greenhouse gas emissions. Rooftop solar photovoltaic systems have emerged as a decentralized solution to reduce dependence on grid electricity. This study analyzes the effectiveness of rooftop solar panels in reducing household electricity consumption by synthesizing empirical evidence from recent international and national studies. A quantitative descriptive approach was applied through systematic comparison of measured and modeled household energy data before and after photovoltaic installation. The analysis focused on self-consumption rates, peak load reduction, and overall grid electricity displacement. The results indicate that rooftop solar panels reduce household grid electricity consumption by 20 to 60 percent, depending on system capacity, demand profile, and occupant behavior. Studies consistently show daytime load shifting and peak shaving effects as key contributors to effectiveness. Behavioral adaptation and policy support further enhance performance outcomes. This study confirms that rooftop solar panels are an effective instrument for household energy transition and provides empirical support for residential solar policies in both developed and developing contexts.
Co-Authors Martinez, Laura Nainggolan, Ahmad Fajar