The average wattage of solar wall lights typically ranges from 0. 5 to 5 watts are designed for ambient lighting, while mid-range models, between 5 to 10 watts, may include motion detection capabilities. 5 to 20 watts, providing options for various needs; 2. Solar lights. Summary: Solar cell lights vary in wattage based on their application, design, and energy efficiency. This article breaks down typical watt ranges, factors influencing power output, and real-world examples to help you choose the right solar lighting solution for residential, commercial, or. This varies from fixture to fixture, manufacturer to manufacturer, and higher wattage does not always mean more light or higher lumen output.