Most solar panels are guaranteed for about 20 years. They require no maintenance apart from a cleaning occasionally to remove dust, debris and bird contributions.
not much.
That depends on the panel.
what is the cost of 3 v solar panal
I assume they come in different sizes, but a typical commercial solar panel generates about 50 watts.
Depends on the type of solar panel. You would need to look at the manufacturer's data to know the exact amounts.
The cost of a solar panel can vary based on factors like size, quality, and manufacturer. On average, a typical residential solar panel can cost between $150 to $350 per panel. However, the total cost of a solar panel system will depend on how many panels are needed for your energy requirements.
About 1,000 watts per square meter of solar panel
1200$-2000$ us
500 volts!!
About 200 Dollars
A common solar panel can produce around 200 watts of power and can vary based on the size and efficiency of the solar power you chose. There are also three things that can affect the amount of electricity that a solar panel produces: the amount of sunlight, the size of the panel and the efficiency of the solar cells.
Depends on the physical size of the solar panel, and more-than-likely, the quality of material it's made of.