The smallest solar panels available on the market today can be as small as 1 watt or even less, with dimensions often measuring around 10 inches by 10 inches or smaller. These panels are particularly relevant for: DIY Projects: Enthusiasts looking to create their own solar-powered. . The smallest solar panel is a compact photovoltaic device designed to convert sunlight into electricity. 5. . Standard Residential Panels Optimize Space and Handling: The industry-standard 60-cell panel dimensions (65″ × 39″ × 1. 5″) aren't arbitrary – they represent the optimal balance between power output, installation ease, and roof space utilization. Small solar panels come in various types and sizes, designed to meet a wide range of consumer needs and preferences. Check Your Energy Needs – Use your electricity bill to calculate average kWh/month. Another commercial type is a 96-cell. .