<![CDATA[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.]]>
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