The short answer is yes, solar panels can work without electricity, but their functionality depends on several factors, such as the type of system installed, the presence of a battery storage syste.
[pdf] In New Zealand:most residential homes would use a system between 1.5kW – 4kW. A panel-only no battery 4kWh system is around $10,000.a 3kW grid-connected solar power system is popular because it helps reduce electricity costs, while remaining relatively affordable (around $8,000).battery systems for a standard house cost around $10,000. .
[pdf] Because solar panels have been exposed to the elements for several decades, they need to resist water damage as possible. All home solar panels are waterproof.
[pdf] The first factor in calculating solar panel output is the power rating. There are mainly 3 different classes of solar panels: 1. Small solar panels: 5oW and 100W panels. 2. Standard solar panels: 200W, 250W, 300W. .
If the sun would be shinning at STC test conditions 24 hours per day, 300W panels would p. .
Every electric system experiences losses. Solar panels are no exception. Being able to capture 100% of generated solar panel output would be perfect. However, realistically, ever. A typical residential solar panel (450W) generates about 1.25kWh daily, 35.63kWh monthly, and 425kWh of solar output annually, depending on factors like wattage, efficiency, location, and sunlight .
[pdf] The high-altitude Kela photovoltaic (PV) power station in Sichuan can save over 600,000 tons of standard coal annually by combining both solar and hydropower to produce electricity.
[pdf] Plants bend toward the sun in a behavior called phototropism, which scientists have mimicked in a light-responsive artificial “sunflower” that can harvest solar energy.
[pdf] 
